./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:14:07,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:14:07,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:14:07,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:14:07,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:14:07,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:14:07,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:14:07,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:14:07,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:14:07,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:14:07,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:14:07,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:14:07,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:14:07,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:14:07,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:14:07,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:14:07,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:14:07,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:14:07,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:14:07,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:14:07,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:14:07,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:14:07,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:14:07,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:14:07,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:14:07,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:14:07,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:14:07,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:14:07,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:14:07,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:14:07,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:14:07,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:14:07,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:14:07,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:14:07,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:14:07,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:14:07,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:14:07,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:14:07,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:14:07,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:14:07,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:14:07,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:14:07,332 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:14:07,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:14:07,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:14:07,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:14:07,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:14:07,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:14:07,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:14:07,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:14:07,334 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:14:07,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:14:07,334 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:14:07,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:14:07,335 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:14:07,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:14:07,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:14:07,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:14:07,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:14:07,337 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:14:07,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:14:07,337 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:14:07,337 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_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 [2022-12-13 12:14:07,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:14:07,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:14:07,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:14:07,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:14:07,519 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:14:07,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-12-13 12:14:10,017 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:14:10,162 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:14:10,162 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-12-13 12:14:10,167 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/data/05378d3d0/e12f885bd2764d9584bdfec241ab8406/FLAGe7337f2d1 [2022-12-13 12:14:10,586 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/data/05378d3d0/e12f885bd2764d9584bdfec241ab8406 [2022-12-13 12:14:10,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:14:10,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:14:10,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:14:10,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:14:10,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:14:10,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dccf44d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10, skipping insertion in model container [2022-12-13 12:14:10,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:14:10,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:14:10,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,712 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,722 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_d88e5cf2-e3a4-4db6-bdde-5890854d5690/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-12-13 12:14:10,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:14:10,732 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:14:10,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:14:10,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:14:10,748 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_d88e5cf2-e3a4-4db6-bdde-5890854d5690/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-12-13 12:14:10,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:14:10,759 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:14:10,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10 WrapperNode [2022-12-13 12:14:10,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:14:10,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:14:10,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:14:10,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:14:10,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,784 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-12-13 12:14:10,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:14:10,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:14:10,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:14:10,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:14:10,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:14:10,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:14:10,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:14:10,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:14:10,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (1/1) ... [2022-12-13 12:14:10,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:14:10,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:10,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:14:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:14:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:14:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:14:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 12:14:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:14:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:14:10,862 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:14:10,941 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:14:10,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:14:11,161 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:14:11,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:14:11,195 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 12:14:11,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:14:11 BoogieIcfgContainer [2022-12-13 12:14:11,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:14:11,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:14:11,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:14:11,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:14:11,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:14:10" (1/3) ... [2022-12-13 12:14:11,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5115a31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:14:11, skipping insertion in model container [2022-12-13 12:14:11,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:14:10" (2/3) ... [2022-12-13 12:14:11,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5115a31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:14:11, skipping insertion in model container [2022-12-13 12:14:11,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:14:11" (3/3) ... [2022-12-13 12:14:11,204 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-12-13 12:14:11,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:14:11,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 12:14:11,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:14:11,272 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 12:14:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 144 transitions, 320 flow [2022-12-13 12:14:11,354 INFO L130 PetriNetUnfolder]: 9/140 cut-off events. [2022-12-13 12:14:11,355 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:14:11,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 140 events. 9/140 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 12:14:11,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 144 transitions, 320 flow [2022-12-13 12:14:11,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 135 transitions, 294 flow [2022-12-13 12:14:11,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:14:11,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 135 transitions, 294 flow [2022-12-13 12:14:11,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 135 transitions, 294 flow [2022-12-13 12:14:11,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 135 transitions, 294 flow [2022-12-13 12:14:11,421 INFO L130 PetriNetUnfolder]: 9/135 cut-off events. [2022-12-13 12:14:11,422 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:14:11,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 135 events. 9/135 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 12:14:11,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 3160 [2022-12-13 12:14:15,475 INFO L134 LiptonReduction]: Checked pairs total: 3473 [2022-12-13 12:14:15,475 INFO L136 LiptonReduction]: Total number of compositions: 125 [2022-12-13 12:14:15,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:14:15,490 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;@2ec36537, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:14:15,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 12:14:15,491 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 12:14:15,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:14:15,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:15,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:14:15,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash 583, now seen corresponding path program 1 times [2022-12-13 12:14:15,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:15,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655996750] [2022-12-13 12:14:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:15,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:15,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655996750] [2022-12-13 12:14:15,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655996750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:15,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:15,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:14:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128344324] [2022-12-13 12:14:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:14:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:14:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:14:15,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2022-12-13 12:14:15,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:15,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:15,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2022-12-13 12:14:15,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:15,831 INFO L130 PetriNetUnfolder]: 2524/3163 cut-off events. [2022-12-13 12:14:15,831 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-12-13 12:14:15,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 3163 events. 2524/3163 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11432 event pairs, 1182 based on Foata normal form. 0/1489 useless extension candidates. Maximal degree in co-relation 4966. Up to 3134 conditions per place. [2022-12-13 12:14:15,857 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 39 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2022-12-13 12:14:15,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 188 flow [2022-12-13 12:14:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:14:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:14:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 294 transitions. [2022-12-13 12:14:15,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5464684014869888 [2022-12-13 12:14:15,868 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 294 transitions. [2022-12-13 12:14:15,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 294 transitions. [2022-12-13 12:14:15,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:15,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 294 transitions. [2022-12-13 12:14:15,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 147.0) internal successors, (294), 2 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:15,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:15,877 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:15,879 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 116 flow. Second operand 2 states and 294 transitions. [2022-12-13 12:14:15,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 188 flow [2022-12-13 12:14:15,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 12:14:15,884 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 94 flow [2022-12-13 12:14:15,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2022-12-13 12:14:15,888 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2022-12-13 12:14:15,888 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 94 flow [2022-12-13 12:14:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:15,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:15,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:14:15,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:14:15,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash 575840, now seen corresponding path program 1 times [2022-12-13 12:14:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:15,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584406368] [2022-12-13 12:14:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584406368] [2022-12-13 12:14:16,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584406368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:16,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:16,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:16,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798696876] [2022-12-13 12:14:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:16,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:16,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:16,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 269 [2022-12-13 12:14:16,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:16,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 269 [2022-12-13 12:14:16,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:16,369 INFO L130 PetriNetUnfolder]: 2413/3022 cut-off events. [2022-12-13 12:14:16,369 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:16,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 3022 events. 2413/3022 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 10802 event pairs, 1127 based on Foata normal form. 0/1434 useless extension candidates. Maximal degree in co-relation 6054. Up to 2992 conditions per place. [2022-12-13 12:14:16,380 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 36 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 12:14:16,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 164 flow [2022-12-13 12:14:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-12-13 12:14:16,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4758364312267658 [2022-12-13 12:14:16,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-12-13 12:14:16,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-12-13 12:14:16,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:16,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-12-13 12:14:16,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,389 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 94 flow. Second operand 3 states and 384 transitions. [2022-12-13 12:14:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 164 flow [2022-12-13 12:14:16,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:14:16,390 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 92 flow [2022-12-13 12:14:16,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2022-12-13 12:14:16,391 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2022-12-13 12:14:16,391 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 92 flow [2022-12-13 12:14:16,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:16,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:14:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:14:16,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash 575838, now seen corresponding path program 1 times [2022-12-13 12:14:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:16,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480277940] [2022-12-13 12:14:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:16,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480277940] [2022-12-13 12:14:16,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480277940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:16,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:16,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867772174] [2022-12-13 12:14:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:16,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:16,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 269 [2022-12-13 12:14:16,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:16,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 269 [2022-12-13 12:14:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:16,743 INFO L130 PetriNetUnfolder]: 2302/2881 cut-off events. [2022-12-13 12:14:16,743 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:16,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5777 conditions, 2881 events. 2302/2881 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10157 event pairs, 1072 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 5773. Up to 2851 conditions per place. [2022-12-13 12:14:16,754 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 34 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-12-13 12:14:16,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 158 flow [2022-12-13 12:14:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2022-12-13 12:14:16,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49566294919454773 [2022-12-13 12:14:16,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2022-12-13 12:14:16,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2022-12-13 12:14:16,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:16,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2022-12-13 12:14:16,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,761 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 92 flow. Second operand 3 states and 400 transitions. [2022-12-13 12:14:16,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 158 flow [2022-12-13 12:14:16,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:16,762 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 89 flow [2022-12-13 12:14:16,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 12:14:16,763 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -11 predicate places. [2022-12-13 12:14:16,763 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 89 flow [2022-12-13 12:14:16,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:16,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:14:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:14:16,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash 553394791, now seen corresponding path program 1 times [2022-12-13 12:14:16,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:16,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644202790] [2022-12-13 12:14:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:16,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:16,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644202790] [2022-12-13 12:14:16,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644202790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:16,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:16,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299022608] [2022-12-13 12:14:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:16,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:16,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:16,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 269 [2022-12-13 12:14:16,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:16,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:16,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 269 [2022-12-13 12:14:16,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:17,076 INFO L130 PetriNetUnfolder]: 2256/2817 cut-off events. [2022-12-13 12:14:17,077 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:17,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5650 conditions, 2817 events. 2256/2817 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9884 event pairs, 1050 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 5646. Up to 2787 conditions per place. [2022-12-13 12:14:17,099 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 32 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-12-13 12:14:17,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 151 flow [2022-12-13 12:14:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2022-12-13 12:14:17,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49318463444857497 [2022-12-13 12:14:17,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2022-12-13 12:14:17,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2022-12-13 12:14:17,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:17,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2022-12-13 12:14:17,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,105 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 89 flow. Second operand 3 states and 398 transitions. [2022-12-13 12:14:17,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 151 flow [2022-12-13 12:14:17,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:17,106 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 86 flow [2022-12-13 12:14:17,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2022-12-13 12:14:17,107 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -12 predicate places. [2022-12-13 12:14:17,107 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 86 flow [2022-12-13 12:14:17,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:17,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:14:17,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:14:17,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 553394793, now seen corresponding path program 1 times [2022-12-13 12:14:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:17,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169325056] [2022-12-13 12:14:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:17,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169325056] [2022-12-13 12:14:17,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169325056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:17,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:17,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015698367] [2022-12-13 12:14:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:17,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 269 [2022-12-13 12:14:17,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:17,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 269 [2022-12-13 12:14:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:17,394 INFO L130 PetriNetUnfolder]: 2210/2753 cut-off events. [2022-12-13 12:14:17,394 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:17,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 2753 events. 2210/2753 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9640 event pairs, 1028 based on Foata normal form. 0/1331 useless extension candidates. Maximal degree in co-relation 5519. Up to 2723 conditions per place. [2022-12-13 12:14:17,409 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 30 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-12-13 12:14:17,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 144 flow [2022-12-13 12:14:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2022-12-13 12:14:17,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684014869888476 [2022-12-13 12:14:17,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2022-12-13 12:14:17,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2022-12-13 12:14:17,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:17,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2022-12-13 12:14:17,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,415 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 86 flow. Second operand 3 states and 378 transitions. [2022-12-13 12:14:17,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 144 flow [2022-12-13 12:14:17,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:17,416 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 83 flow [2022-12-13 12:14:17,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2022-12-13 12:14:17,417 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -13 predicate places. [2022-12-13 12:14:17,417 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 83 flow [2022-12-13 12:14:17,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:17,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:17,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:14:17,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -763535887, now seen corresponding path program 1 times [2022-12-13 12:14:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:17,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237700054] [2022-12-13 12:14:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:17,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237700054] [2022-12-13 12:14:17,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237700054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:17,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:17,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445127578] [2022-12-13 12:14:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:17,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 269 [2022-12-13 12:14:17,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:17,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 269 [2022-12-13 12:14:17,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:17,706 INFO L130 PetriNetUnfolder]: 2107/2620 cut-off events. [2022-12-13 12:14:17,706 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:17,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 2620 events. 2107/2620 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9011 event pairs, 981 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 5254. Up to 2590 conditions per place. [2022-12-13 12:14:17,716 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 28 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 12:14:17,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 137 flow [2022-12-13 12:14:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-12-13 12:14:17,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4882280049566295 [2022-12-13 12:14:17,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-12-13 12:14:17,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-12-13 12:14:17,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:17,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-12-13 12:14:17,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,722 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 83 flow. Second operand 3 states and 394 transitions. [2022-12-13 12:14:17,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 137 flow [2022-12-13 12:14:17,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:17,724 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 80 flow [2022-12-13 12:14:17,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-12-13 12:14:17,724 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -14 predicate places. [2022-12-13 12:14:17,724 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 80 flow [2022-12-13 12:14:17,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:17,725 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:17,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:14:17,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -763535889, now seen corresponding path program 1 times [2022-12-13 12:14:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:17,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961526383] [2022-12-13 12:14:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961526383] [2022-12-13 12:14:17,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961526383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:17,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:17,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988874689] [2022-12-13 12:14:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:17,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 269 [2022-12-13 12:14:17,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:17,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 269 [2022-12-13 12:14:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:17,964 INFO L130 PetriNetUnfolder]: 2004/2487 cut-off events. [2022-12-13 12:14:17,964 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:17,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4993 conditions, 2487 events. 2004/2487 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8474 event pairs, 934 based on Foata normal form. 0/1237 useless extension candidates. Maximal degree in co-relation 4989. Up to 2457 conditions per place. [2022-12-13 12:14:17,975 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 26 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 12:14:17,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 130 flow [2022-12-13 12:14:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2022-12-13 12:14:17,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4634448574969021 [2022-12-13 12:14:17,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2022-12-13 12:14:17,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2022-12-13 12:14:17,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:17,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2022-12-13 12:14:17,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,979 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 80 flow. Second operand 3 states and 374 transitions. [2022-12-13 12:14:17,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 130 flow [2022-12-13 12:14:17,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:17,980 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 77 flow [2022-12-13 12:14:17,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2022-12-13 12:14:17,980 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -15 predicate places. [2022-12-13 12:14:17,980 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 77 flow [2022-12-13 12:14:17,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:17,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:17,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:17,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:14:17,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 681432793, now seen corresponding path program 1 times [2022-12-13 12:14:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:17,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980353455] [2022-12-13 12:14:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980353455] [2022-12-13 12:14:18,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980353455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:18,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:18,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:14:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047407011] [2022-12-13 12:14:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:18,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:14:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:14:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:14:18,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 269 [2022-12-13 12:14:18,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:18,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 269 [2022-12-13 12:14:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:18,292 INFO L130 PetriNetUnfolder]: 1590/1992 cut-off events. [2022-12-13 12:14:18,292 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:18,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 1992 events. 1590/1992 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6651 event pairs, 736 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 4000. Up to 1962 conditions per place. [2022-12-13 12:14:18,299 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-12-13 12:14:18,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 127 flow [2022-12-13 12:14:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2022-12-13 12:14:18,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4163568773234201 [2022-12-13 12:14:18,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2022-12-13 12:14:18,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2022-12-13 12:14:18,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:18,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2022-12-13 12:14:18,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,304 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 77 flow. Second operand 3 states and 336 transitions. [2022-12-13 12:14:18,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 127 flow [2022-12-13 12:14:18,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:18,306 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 76 flow [2022-12-13 12:14:18,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2022-12-13 12:14:18,307 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -15 predicate places. [2022-12-13 12:14:18,307 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 76 flow [2022-12-13 12:14:18,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:18,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:18,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:14:18,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash 681432794, now seen corresponding path program 1 times [2022-12-13 12:14:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:18,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424925778] [2022-12-13 12:14:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:18,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424925778] [2022-12-13 12:14:18,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424925778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:18,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:18,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:14:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659443580] [2022-12-13 12:14:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:14:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:14:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:14:18,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 269 [2022-12-13 12:14:18,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:18,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 269 [2022-12-13 12:14:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:18,730 INFO L130 PetriNetUnfolder]: 1176/1497 cut-off events. [2022-12-13 12:14:18,730 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 12:14:18,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 1497 events. 1176/1497 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4821 event pairs, 538 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 3011. Up to 1467 conditions per place. [2022-12-13 12:14:18,734 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 24 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-12-13 12:14:18,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 124 flow [2022-12-13 12:14:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2022-12-13 12:14:18,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459727385377943 [2022-12-13 12:14:18,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2022-12-13 12:14:18,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2022-12-13 12:14:18,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:18,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2022-12-13 12:14:18,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,737 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 76 flow. Second operand 3 states and 371 transitions. [2022-12-13 12:14:18,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 124 flow [2022-12-13 12:14:18,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:18,737 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 75 flow [2022-12-13 12:14:18,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2022-12-13 12:14:18,738 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -15 predicate places. [2022-12-13 12:14:18,738 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 75 flow [2022-12-13 12:14:18,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:18,739 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:18,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:14:18,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash 524869588, now seen corresponding path program 1 times [2022-12-13 12:14:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:18,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443278159] [2022-12-13 12:14:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:18,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443278159] [2022-12-13 12:14:18,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443278159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:18,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:18,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:14:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569877646] [2022-12-13 12:14:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:14:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:14:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:14:18,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2022-12-13 12:14:18,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:18,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2022-12-13 12:14:18,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:18,976 INFO L130 PetriNetUnfolder]: 1343/1736 cut-off events. [2022-12-13 12:14:18,976 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 12:14:18,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 1736 events. 1343/1736 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5906 event pairs, 215 based on Foata normal form. 1/1042 useless extension candidates. Maximal degree in co-relation 3512. Up to 1515 conditions per place. [2022-12-13 12:14:18,981 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 39 selfloop transitions, 3 changer transitions 3/49 dead transitions. [2022-12-13 12:14:18,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 212 flow [2022-12-13 12:14:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:14:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:14:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2022-12-13 12:14:18,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5278810408921933 [2022-12-13 12:14:18,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2022-12-13 12:14:18,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2022-12-13 12:14:18,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:18,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2022-12-13 12:14:18,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,984 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 75 flow. Second operand 3 states and 426 transitions. [2022-12-13 12:14:18,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 212 flow [2022-12-13 12:14:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:18,985 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 97 flow [2022-12-13 12:14:18,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2022-12-13 12:14:18,986 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -13 predicate places. [2022-12-13 12:14:18,986 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 97 flow [2022-12-13 12:14:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:18,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:18,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:14:18,986 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1513363017, now seen corresponding path program 1 times [2022-12-13 12:14:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:18,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642894523] [2022-12-13 12:14:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642894523] [2022-12-13 12:14:19,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642894523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:19,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:19,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:19,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425892984] [2022-12-13 12:14:19,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:19,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:19,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:19,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:19,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:19,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:19,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:19,307 INFO L130 PetriNetUnfolder]: 1935/2601 cut-off events. [2022-12-13 12:14:19,308 INFO L131 PetriNetUnfolder]: For 669/676 co-relation queries the response was YES. [2022-12-13 12:14:19,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6210 conditions, 2601 events. 1935/2601 cut-off events. For 669/676 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11084 event pairs, 437 based on Foata normal form. 25/2582 useless extension candidates. Maximal degree in co-relation 6205. Up to 1384 conditions per place. [2022-12-13 12:14:19,315 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 60 selfloop transitions, 4 changer transitions 18/84 dead transitions. [2022-12-13 12:14:19,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 84 transitions, 404 flow [2022-12-13 12:14:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 669 transitions. [2022-12-13 12:14:19,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49739776951672865 [2022-12-13 12:14:19,316 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 669 transitions. [2022-12-13 12:14:19,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 669 transitions. [2022-12-13 12:14:19,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:19,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 669 transitions. [2022-12-13 12:14:19,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,319 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,319 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 97 flow. Second operand 5 states and 669 transitions. [2022-12-13 12:14:19,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 84 transitions, 404 flow [2022-12-13 12:14:19,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 84 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:19,320 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 121 flow [2022-12-13 12:14:19,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2022-12-13 12:14:19,321 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2022-12-13 12:14:19,321 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 121 flow [2022-12-13 12:14:19,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:19,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:19,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:14:19,321 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:19,322 INFO L85 PathProgramCache]: Analyzing trace with hash -230247953, now seen corresponding path program 2 times [2022-12-13 12:14:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:19,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494998627] [2022-12-13 12:14:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:19,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:19,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494998627] [2022-12-13 12:14:19,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494998627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:19,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206632334] [2022-12-13 12:14:19,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:14:19,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:19,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:19,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:14:19,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:14:19,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:19,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:19,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:19,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:19,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206632334] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:19,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:19,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 12:14:19,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295122584] [2022-12-13 12:14:19,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:14:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:14:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:14:19,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:19,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 121 flow. Second operand has 8 states, 8 states have (on average 120.375) internal successors, (963), 8 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:19,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:19,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:19,982 INFO L130 PetriNetUnfolder]: 2447/3264 cut-off events. [2022-12-13 12:14:19,982 INFO L131 PetriNetUnfolder]: For 1786/1974 co-relation queries the response was YES. [2022-12-13 12:14:19,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 3264 events. 2447/3264 cut-off events. For 1786/1974 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 13687 event pairs, 278 based on Foata normal form. 276/3520 useless extension candidates. Maximal degree in co-relation 8692. Up to 1436 conditions per place. [2022-12-13 12:14:19,992 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 76 selfloop transitions, 5 changer transitions 1/84 dead transitions. [2022-12-13 12:14:19,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 455 flow [2022-12-13 12:14:19,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2022-12-13 12:14:19,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4862453531598513 [2022-12-13 12:14:19,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2022-12-13 12:14:19,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2022-12-13 12:14:19,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:19,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2022-12-13 12:14:19,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:19,996 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 121 flow. Second operand 5 states and 654 transitions. [2022-12-13 12:14:19,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 455 flow [2022-12-13 12:14:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 440 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:19,999 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 149 flow [2022-12-13 12:14:19,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2022-12-13 12:14:20,009 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2022-12-13 12:14:20,010 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 149 flow [2022-12-13 12:14:20,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.375) internal successors, (963), 8 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:20,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:20,010 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:20,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:14:20,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 12:14:20,211 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2117714847, now seen corresponding path program 1 times [2022-12-13 12:14:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106103234] [2022-12-13 12:14:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:20,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:20,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106103234] [2022-12-13 12:14:20,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106103234] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:20,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354305757] [2022-12-13 12:14:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:20,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:20,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:14:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:20,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:20,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:20,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:20,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354305757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:20,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:20,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 12:14:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296625668] [2022-12-13 12:14:20,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:14:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:14:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:14:20,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:20,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:20,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:20,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:20,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:20,826 INFO L130 PetriNetUnfolder]: 2979/3951 cut-off events. [2022-12-13 12:14:20,827 INFO L131 PetriNetUnfolder]: For 3763/3862 co-relation queries the response was YES. [2022-12-13 12:14:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11870 conditions, 3951 events. 2979/3951 cut-off events. For 3763/3862 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 17089 event pairs, 308 based on Foata normal form. 188/4099 useless extension candidates. Maximal degree in co-relation 11860. Up to 1708 conditions per place. [2022-12-13 12:14:20,839 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 84 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2022-12-13 12:14:20,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 542 flow [2022-12-13 12:14:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 660 transitions. [2022-12-13 12:14:20,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49070631970260226 [2022-12-13 12:14:20,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 660 transitions. [2022-12-13 12:14:20,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 660 transitions. [2022-12-13 12:14:20,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:20,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 660 transitions. [2022-12-13 12:14:20,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:20,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:20,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:20,843 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 149 flow. Second operand 5 states and 660 transitions. [2022-12-13 12:14:20,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 542 flow [2022-12-13 12:14:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 93 transitions, 533 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:20,846 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 202 flow [2022-12-13 12:14:20,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2022-12-13 12:14:20,847 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2022-12-13 12:14:20,847 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 202 flow [2022-12-13 12:14:20,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:20,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:20,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:20,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:14:21,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:21,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:21,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash -597246729, now seen corresponding path program 2 times [2022-12-13 12:14:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:21,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597764668] [2022-12-13 12:14:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:21,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597764668] [2022-12-13 12:14:21,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597764668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:21,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:21,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988978698] [2022-12-13 12:14:21,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:21,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:21,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:21,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:21,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:21,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:21,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:21,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:21,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:21,451 INFO L130 PetriNetUnfolder]: 2584/3490 cut-off events. [2022-12-13 12:14:21,451 INFO L131 PetriNetUnfolder]: For 7241/7600 co-relation queries the response was YES. [2022-12-13 12:14:21,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11478 conditions, 3490 events. 2584/3490 cut-off events. For 7241/7600 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14809 event pairs, 867 based on Foata normal form. 368/3711 useless extension candidates. Maximal degree in co-relation 11466. Up to 2407 conditions per place. [2022-12-13 12:14:21,466 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 68 selfloop transitions, 4 changer transitions 15/92 dead transitions. [2022-12-13 12:14:21,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 581 flow [2022-12-13 12:14:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 665 transitions. [2022-12-13 12:14:21,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4944237918215613 [2022-12-13 12:14:21,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 665 transitions. [2022-12-13 12:14:21,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 665 transitions. [2022-12-13 12:14:21,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:21,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 665 transitions. [2022-12-13 12:14:21,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:21,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:21,470 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:21,470 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 202 flow. Second operand 5 states and 665 transitions. [2022-12-13 12:14:21,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 581 flow [2022-12-13 12:14:21,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 565 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:21,475 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 217 flow [2022-12-13 12:14:21,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2022-12-13 12:14:21,475 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2022-12-13 12:14:21,475 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 217 flow [2022-12-13 12:14:21,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:21,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:21,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:14:21,476 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1146875211, now seen corresponding path program 3 times [2022-12-13 12:14:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:21,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396470660] [2022-12-13 12:14:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:21,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396470660] [2022-12-13 12:14:21,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396470660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:21,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:21,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655233857] [2022-12-13 12:14:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:21,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:21,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:21,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:21,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:21,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:22,076 INFO L130 PetriNetUnfolder]: 4409/5897 cut-off events. [2022-12-13 12:14:22,077 INFO L131 PetriNetUnfolder]: For 11646/11892 co-relation queries the response was YES. [2022-12-13 12:14:22,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20281 conditions, 5897 events. 4409/5897 cut-off events. For 11646/11892 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 27456 event pairs, 1078 based on Foata normal form. 288/6111 useless extension candidates. Maximal degree in co-relation 20266. Up to 2669 conditions per place. [2022-12-13 12:14:22,096 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 94 selfloop transitions, 10 changer transitions 1/107 dead transitions. [2022-12-13 12:14:22,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 107 transitions, 723 flow [2022-12-13 12:14:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 670 transitions. [2022-12-13 12:14:22,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49814126394052044 [2022-12-13 12:14:22,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 670 transitions. [2022-12-13 12:14:22,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 670 transitions. [2022-12-13 12:14:22,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:22,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 670 transitions. [2022-12-13 12:14:22,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,100 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 217 flow. Second operand 5 states and 670 transitions. [2022-12-13 12:14:22,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 107 transitions, 723 flow [2022-12-13 12:14:22,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 107 transitions, 685 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:22,106 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 268 flow [2022-12-13 12:14:22,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2022-12-13 12:14:22,106 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2022-12-13 12:14:22,106 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 268 flow [2022-12-13 12:14:22,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:22,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:22,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:14:22,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1990359637, now seen corresponding path program 4 times [2022-12-13 12:14:22,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:22,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836678634] [2022-12-13 12:14:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:22,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836678634] [2022-12-13 12:14:22,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836678634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:22,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:22,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208819346] [2022-12-13 12:14:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:22,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:22,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:22,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:22,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:22,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:22,671 INFO L130 PetriNetUnfolder]: 4238/5765 cut-off events. [2022-12-13 12:14:22,671 INFO L131 PetriNetUnfolder]: For 17972/18652 co-relation queries the response was YES. [2022-12-13 12:14:22,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21270 conditions, 5765 events. 4238/5765 cut-off events. For 17972/18652 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27677 event pairs, 1636 based on Foata normal form. 718/6281 useless extension candidates. Maximal degree in co-relation 21253. Up to 3856 conditions per place. [2022-12-13 12:14:22,694 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 67 selfloop transitions, 7 changer transitions 16/95 dead transitions. [2022-12-13 12:14:22,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 683 flow [2022-12-13 12:14:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2022-12-13 12:14:22,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49144981412639405 [2022-12-13 12:14:22,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 661 transitions. [2022-12-13 12:14:22,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 661 transitions. [2022-12-13 12:14:22,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:22,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 661 transitions. [2022-12-13 12:14:22,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,699 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,699 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 268 flow. Second operand 5 states and 661 transitions. [2022-12-13 12:14:22,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 683 flow [2022-12-13 12:14:22,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 653 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:22,708 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 321 flow [2022-12-13 12:14:22,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2022-12-13 12:14:22,709 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2022-12-13 12:14:22,709 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 321 flow [2022-12-13 12:14:22,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:22,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:22,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:14:22,709 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash -505361791, now seen corresponding path program 5 times [2022-12-13 12:14:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:22,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452136637] [2022-12-13 12:14:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:22,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:22,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:22,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452136637] [2022-12-13 12:14:22,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452136637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:22,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:22,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907286732] [2022-12-13 12:14:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:22,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:22,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:22,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:22,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:22,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:22,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:23,489 INFO L130 PetriNetUnfolder]: 5537/7414 cut-off events. [2022-12-13 12:14:23,489 INFO L131 PetriNetUnfolder]: For 21548/21795 co-relation queries the response was YES. [2022-12-13 12:14:23,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27872 conditions, 7414 events. 5537/7414 cut-off events. For 21548/21795 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 34983 event pairs, 1467 based on Foata normal form. 337/7672 useless extension candidates. Maximal degree in co-relation 27852. Up to 3203 conditions per place. [2022-12-13 12:14:23,529 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 96 selfloop transitions, 19 changer transitions 1/118 dead transitions. [2022-12-13 12:14:23,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 118 transitions, 934 flow [2022-12-13 12:14:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2022-12-13 12:14:23,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4966542750929368 [2022-12-13 12:14:23,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2022-12-13 12:14:23,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2022-12-13 12:14:23,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:23,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2022-12-13 12:14:23,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:23,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:23,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:23,534 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 321 flow. Second operand 5 states and 668 transitions. [2022-12-13 12:14:23,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 118 transitions, 934 flow [2022-12-13 12:14:23,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 118 transitions, 911 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:23,551 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 488 flow [2022-12-13 12:14:23,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2022-12-13 12:14:23,552 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2022-12-13 12:14:23,552 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 488 flow [2022-12-13 12:14:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:23,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:23,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:14:23,552 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash -236448429, now seen corresponding path program 6 times [2022-12-13 12:14:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924991990] [2022-12-13 12:14:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:23,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:23,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924991990] [2022-12-13 12:14:23,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924991990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:23,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:23,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937422766] [2022-12-13 12:14:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:23,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:23,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:23,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 488 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:23,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:23,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:24,318 INFO L130 PetriNetUnfolder]: 4677/6387 cut-off events. [2022-12-13 12:14:24,319 INFO L131 PetriNetUnfolder]: For 26668/27344 co-relation queries the response was YES. [2022-12-13 12:14:24,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25857 conditions, 6387 events. 4677/6387 cut-off events. For 26668/27344 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 31161 event pairs, 1448 based on Foata normal form. 737/6954 useless extension candidates. Maximal degree in co-relation 25835. Up to 3719 conditions per place. [2022-12-13 12:14:24,340 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 80 selfloop transitions, 18 changer transitions 19/122 dead transitions. [2022-12-13 12:14:24,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 1086 flow [2022-12-13 12:14:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:14:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:14:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 787 transitions. [2022-12-13 12:14:24,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4876084262701363 [2022-12-13 12:14:24,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 787 transitions. [2022-12-13 12:14:24,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 787 transitions. [2022-12-13 12:14:24,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:24,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 787 transitions. [2022-12-13 12:14:24,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.16666666666666) internal successors, (787), 6 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:24,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:24,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:24,345 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 488 flow. Second operand 6 states and 787 transitions. [2022-12-13 12:14:24,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 1086 flow [2022-12-13 12:14:24,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 122 transitions, 1062 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:24,375 INFO L231 Difference]: Finished difference. Result has 82 places, 61 transitions, 582 flow [2022-12-13 12:14:24,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=582, PETRI_PLACES=82, PETRI_TRANSITIONS=61} [2022-12-13 12:14:24,376 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2022-12-13 12:14:24,376 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 61 transitions, 582 flow [2022-12-13 12:14:24,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:24,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:24,376 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:24,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:14:24,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -155680227, now seen corresponding path program 3 times [2022-12-13 12:14:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:24,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626924095] [2022-12-13 12:14:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:24,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:24,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:24,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626924095] [2022-12-13 12:14:24,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626924095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:24,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567524069] [2022-12-13 12:14:24,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:14:24,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:24,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:24,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:14:24,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:14:24,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:24,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:24,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:24,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:24,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:24,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567524069] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:24,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:24,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:14:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393707329] [2022-12-13 12:14:24,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:14:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:14:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:14:24,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:24,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 61 transitions, 582 flow. Second operand has 10 states, 10 states have (on average 119.8) internal successors, (1198), 10 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:24,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:24,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:25,656 INFO L130 PetriNetUnfolder]: 7350/9858 cut-off events. [2022-12-13 12:14:25,656 INFO L131 PetriNetUnfolder]: For 44503/45081 co-relation queries the response was YES. [2022-12-13 12:14:25,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41601 conditions, 9858 events. 7350/9858 cut-off events. For 44503/45081 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 49571 event pairs, 1253 based on Foata normal form. 610/10354 useless extension candidates. Maximal degree in co-relation 41576. Up to 4048 conditions per place. [2022-12-13 12:14:25,704 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 162 selfloop transitions, 26 changer transitions 4/199 dead transitions. [2022-12-13 12:14:25,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 199 transitions, 1812 flow [2022-12-13 12:14:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:14:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:14:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1063 transitions. [2022-12-13 12:14:25,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49395910780669144 [2022-12-13 12:14:25,707 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1063 transitions. [2022-12-13 12:14:25,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1063 transitions. [2022-12-13 12:14:25,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:25,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1063 transitions. [2022-12-13 12:14:25,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.875) internal successors, (1063), 8 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:25,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:25,712 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:25,712 INFO L175 Difference]: Start difference. First operand has 82 places, 61 transitions, 582 flow. Second operand 8 states and 1063 transitions. [2022-12-13 12:14:25,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 199 transitions, 1812 flow [2022-12-13 12:14:25,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 199 transitions, 1736 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:25,754 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 799 flow [2022-12-13 12:14:25,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=799, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2022-12-13 12:14:25,754 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2022-12-13 12:14:25,754 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 799 flow [2022-12-13 12:14:25,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.8) internal successors, (1198), 10 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:25,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:25,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:25,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:14:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:25,957 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:25,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 194407563, now seen corresponding path program 7 times [2022-12-13 12:14:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:25,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987357856] [2022-12-13 12:14:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:26,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987357856] [2022-12-13 12:14:26,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987357856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:26,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:26,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:26,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065145053] [2022-12-13 12:14:26,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:26,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:26,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:26,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:26,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:26,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 799 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:26,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:26,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:27,136 INFO L130 PetriNetUnfolder]: 7228/9834 cut-off events. [2022-12-13 12:14:27,136 INFO L131 PetriNetUnfolder]: For 53615/53735 co-relation queries the response was YES. [2022-12-13 12:14:27,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42892 conditions, 9834 events. 7228/9834 cut-off events. For 53615/53735 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 50165 event pairs, 1885 based on Foata normal form. 252/9968 useless extension candidates. Maximal degree in co-relation 42864. Up to 6120 conditions per place. [2022-12-13 12:14:27,175 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 121 selfloop transitions, 29 changer transitions 4/157 dead transitions. [2022-12-13 12:14:27,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 157 transitions, 1640 flow [2022-12-13 12:14:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:14:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:14:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 795 transitions. [2022-12-13 12:14:27,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49256505576208176 [2022-12-13 12:14:27,177 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 795 transitions. [2022-12-13 12:14:27,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 795 transitions. [2022-12-13 12:14:27,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:27,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 795 transitions. [2022-12-13 12:14:27,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:27,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:27,179 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:27,179 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 799 flow. Second operand 6 states and 795 transitions. [2022-12-13 12:14:27,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 157 transitions, 1640 flow [2022-12-13 12:14:27,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 157 transitions, 1587 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:27,233 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 1078 flow [2022-12-13 12:14:27,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1078, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-12-13 12:14:27,234 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2022-12-13 12:14:27,234 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 1078 flow [2022-12-13 12:14:27,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:27,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:27,234 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:27,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:14:27,234 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:27,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:27,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1371186581, now seen corresponding path program 8 times [2022-12-13 12:14:27,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:27,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911289018] [2022-12-13 12:14:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:27,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:27,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:27,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911289018] [2022-12-13 12:14:27,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911289018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:27,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:27,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:27,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674629549] [2022-12-13 12:14:27,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:27,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:27,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:27,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:27,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:27,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 1078 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:27,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:27,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:27,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:28,498 INFO L130 PetriNetUnfolder]: 7848/10939 cut-off events. [2022-12-13 12:14:28,498 INFO L131 PetriNetUnfolder]: For 88832/90832 co-relation queries the response was YES. [2022-12-13 12:14:28,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52556 conditions, 10939 events. 7848/10939 cut-off events. For 88832/90832 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 57299 event pairs, 2159 based on Foata normal form. 1241/12086 useless extension candidates. Maximal degree in co-relation 52524. Up to 5840 conditions per place. [2022-12-13 12:14:28,559 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 147 selfloop transitions, 42 changer transitions 1/201 dead transitions. [2022-12-13 12:14:28,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 201 transitions, 2442 flow [2022-12-13 12:14:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:14:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:14:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 793 transitions. [2022-12-13 12:14:28,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4913258983890954 [2022-12-13 12:14:28,561 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 793 transitions. [2022-12-13 12:14:28,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 793 transitions. [2022-12-13 12:14:28,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:28,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 793 transitions. [2022-12-13 12:14:28,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:28,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:28,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:28,564 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 1078 flow. Second operand 6 states and 793 transitions. [2022-12-13 12:14:28,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 201 transitions, 2442 flow [2022-12-13 12:14:28,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 201 transitions, 2316 flow, removed 48 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:28,760 INFO L231 Difference]: Finished difference. Result has 101 places, 114 transitions, 1461 flow [2022-12-13 12:14:28,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1461, PETRI_PLACES=101, PETRI_TRANSITIONS=114} [2022-12-13 12:14:28,761 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2022-12-13 12:14:28,761 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 114 transitions, 1461 flow [2022-12-13 12:14:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:28,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:28,761 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:14:28,761 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash -245366963, now seen corresponding path program 9 times [2022-12-13 12:14:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:28,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825389124] [2022-12-13 12:14:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:28,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:28,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:28,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825389124] [2022-12-13 12:14:28,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825389124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:28,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:28,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:28,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223509478] [2022-12-13 12:14:28,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:28,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:28,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:28,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:28,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:28,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 114 transitions, 1461 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:28,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:28,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:30,204 INFO L130 PetriNetUnfolder]: 7728/10884 cut-off events. [2022-12-13 12:14:30,204 INFO L131 PetriNetUnfolder]: For 83628/84326 co-relation queries the response was YES. [2022-12-13 12:14:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56146 conditions, 10884 events. 7728/10884 cut-off events. For 83628/84326 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 59461 event pairs, 1346 based on Foata normal form. 629/11317 useless extension candidates. Maximal degree in co-relation 56112. Up to 4635 conditions per place. [2022-12-13 12:14:30,260 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 123 selfloop transitions, 33 changer transitions 1/169 dead transitions. [2022-12-13 12:14:30,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 169 transitions, 2151 flow [2022-12-13 12:14:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2022-12-13 12:14:30,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4921933085501859 [2022-12-13 12:14:30,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2022-12-13 12:14:30,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2022-12-13 12:14:30,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:30,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2022-12-13 12:14:30,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:30,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:30,264 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:30,264 INFO L175 Difference]: Start difference. First operand has 101 places, 114 transitions, 1461 flow. Second operand 5 states and 662 transitions. [2022-12-13 12:14:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 169 transitions, 2151 flow [2022-12-13 12:14:30,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 169 transitions, 2149 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 12:14:30,485 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 1596 flow [2022-12-13 12:14:30,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1596, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2022-12-13 12:14:30,486 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2022-12-13 12:14:30,486 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 1596 flow [2022-12-13 12:14:30,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:30,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:30,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:30,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:14:30,486 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:30,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash 276749627, now seen corresponding path program 4 times [2022-12-13 12:14:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:30,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765006047] [2022-12-13 12:14:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:30,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:30,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:30,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765006047] [2022-12-13 12:14:30,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765006047] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827917184] [2022-12-13 12:14:30,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:14:30,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:30,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:30,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:30,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:14:30,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:14:30,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:30,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:30,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:30,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:30,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827917184] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:30,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:30,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:14:30,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462617807] [2022-12-13 12:14:30,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:30,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:14:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:14:30,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:14:30,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:30,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 1596 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:30,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:30,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:30,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:31,991 INFO L130 PetriNetUnfolder]: 8025/11222 cut-off events. [2022-12-13 12:14:31,991 INFO L131 PetriNetUnfolder]: For 104925/106670 co-relation queries the response was YES. [2022-12-13 12:14:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59843 conditions, 11222 events. 8025/11222 cut-off events. For 104925/106670 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 61106 event pairs, 1943 based on Foata normal form. 1004/11898 useless extension candidates. Maximal degree in co-relation 59806. Up to 4600 conditions per place. [2022-12-13 12:14:32,055 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 163 selfloop transitions, 39 changer transitions 6/217 dead transitions. [2022-12-13 12:14:32,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 217 transitions, 2896 flow [2022-12-13 12:14:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2022-12-13 12:14:32,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4988847583643123 [2022-12-13 12:14:32,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2022-12-13 12:14:32,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2022-12-13 12:14:32,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:32,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2022-12-13 12:14:32,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:32,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:32,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:32,059 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 1596 flow. Second operand 5 states and 671 transitions. [2022-12-13 12:14:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 217 transitions, 2896 flow [2022-12-13 12:14:32,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 217 transitions, 2844 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:32,252 INFO L231 Difference]: Finished difference. Result has 112 places, 126 transitions, 1821 flow [2022-12-13 12:14:32,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1821, PETRI_PLACES=112, PETRI_TRANSITIONS=126} [2022-12-13 12:14:32,252 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2022-12-13 12:14:32,253 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 126 transitions, 1821 flow [2022-12-13 12:14:32,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:32,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:32,253 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:32,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:14:32,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:32,455 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1729591859, now seen corresponding path program 10 times [2022-12-13 12:14:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127996814] [2022-12-13 12:14:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:32,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:32,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127996814] [2022-12-13 12:14:32,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127996814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:32,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:32,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:32,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64339181] [2022-12-13 12:14:32,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:32,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:32,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:32,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:32,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 126 transitions, 1821 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:32,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:32,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:32,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:33,838 INFO L130 PetriNetUnfolder]: 8159/11458 cut-off events. [2022-12-13 12:14:33,838 INFO L131 PetriNetUnfolder]: For 103548/105152 co-relation queries the response was YES. [2022-12-13 12:14:33,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61570 conditions, 11458 events. 8159/11458 cut-off events. For 103548/105152 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 60604 event pairs, 1168 based on Foata normal form. 1274/12575 useless extension candidates. Maximal degree in co-relation 61530. Up to 4708 conditions per place. [2022-12-13 12:14:33,909 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 154 selfloop transitions, 32 changer transitions 2/203 dead transitions. [2022-12-13 12:14:33,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 203 transitions, 2909 flow [2022-12-13 12:14:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2022-12-13 12:14:33,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49516728624535317 [2022-12-13 12:14:33,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2022-12-13 12:14:33,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2022-12-13 12:14:33,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:33,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2022-12-13 12:14:33,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:33,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:33,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:33,914 INFO L175 Difference]: Start difference. First operand has 112 places, 126 transitions, 1821 flow. Second operand 5 states and 666 transitions. [2022-12-13 12:14:33,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 203 transitions, 2909 flow [2022-12-13 12:14:34,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 203 transitions, 2773 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:34,300 INFO L231 Difference]: Finished difference. Result has 116 places, 128 transitions, 1855 flow [2022-12-13 12:14:34,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1855, PETRI_PLACES=116, PETRI_TRANSITIONS=128} [2022-12-13 12:14:34,300 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2022-12-13 12:14:34,301 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 128 transitions, 1855 flow [2022-12-13 12:14:34,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:34,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:34,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:34,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:14:34,335 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 48826493, now seen corresponding path program 5 times [2022-12-13 12:14:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:34,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237370170] [2022-12-13 12:14:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:34,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237370170] [2022-12-13 12:14:34,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237370170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:34,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:34,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736779776] [2022-12-13 12:14:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:34,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:34,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 128 transitions, 1855 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:34,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:34,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:34,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:35,832 INFO L130 PetriNetUnfolder]: 7103/9815 cut-off events. [2022-12-13 12:14:35,832 INFO L131 PetriNetUnfolder]: For 112138/114259 co-relation queries the response was YES. [2022-12-13 12:14:35,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56904 conditions, 9815 events. 7103/9815 cut-off events. For 112138/114259 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 50833 event pairs, 1722 based on Foata normal form. 1274/10723 useless extension candidates. Maximal degree in co-relation 56863. Up to 7076 conditions per place. [2022-12-13 12:14:35,943 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 162 selfloop transitions, 29 changer transitions 11/212 dead transitions. [2022-12-13 12:14:35,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 212 transitions, 2843 flow [2022-12-13 12:14:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:14:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:14:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 801 transitions. [2022-12-13 12:14:35,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4962825278810409 [2022-12-13 12:14:35,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 801 transitions. [2022-12-13 12:14:35,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 801 transitions. [2022-12-13 12:14:35,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:35,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 801 transitions. [2022-12-13 12:14:35,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:35,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:35,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:35,949 INFO L175 Difference]: Start difference. First operand has 116 places, 128 transitions, 1855 flow. Second operand 6 states and 801 transitions. [2022-12-13 12:14:35,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 212 transitions, 2843 flow [2022-12-13 12:14:36,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 212 transitions, 2771 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:36,249 INFO L231 Difference]: Finished difference. Result has 120 places, 131 transitions, 1931 flow [2022-12-13 12:14:36,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1931, PETRI_PLACES=120, PETRI_TRANSITIONS=131} [2022-12-13 12:14:36,250 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2022-12-13 12:14:36,250 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 131 transitions, 1931 flow [2022-12-13 12:14:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:36,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:36,250 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:14:36,250 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2041166115, now seen corresponding path program 11 times [2022-12-13 12:14:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129542574] [2022-12-13 12:14:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:36,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129542574] [2022-12-13 12:14:36,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129542574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:36,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:36,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238119732] [2022-12-13 12:14:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:36,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:36,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:36,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 131 transitions, 1931 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:36,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:36,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:36,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:38,035 INFO L130 PetriNetUnfolder]: 10491/14532 cut-off events. [2022-12-13 12:14:38,036 INFO L131 PetriNetUnfolder]: For 154774/158451 co-relation queries the response was YES. [2022-12-13 12:14:38,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79117 conditions, 14532 events. 10491/14532 cut-off events. For 154774/158451 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 78336 event pairs, 2627 based on Foata normal form. 1842/16242 useless extension candidates. Maximal degree in co-relation 79075. Up to 7727 conditions per place. [2022-12-13 12:14:38,118 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 296 selfloop transitions, 15 changer transitions 1/327 dead transitions. [2022-12-13 12:14:38,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 327 transitions, 5330 flow [2022-12-13 12:14:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-12-13 12:14:38,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49368029739776953 [2022-12-13 12:14:38,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-12-13 12:14:38,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-12-13 12:14:38,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:38,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-12-13 12:14:38,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:38,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:38,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:38,122 INFO L175 Difference]: Start difference. First operand has 120 places, 131 transitions, 1931 flow. Second operand 5 states and 664 transitions. [2022-12-13 12:14:38,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 327 transitions, 5330 flow [2022-12-13 12:14:38,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 327 transitions, 5144 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:38,421 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 2088 flow [2022-12-13 12:14:38,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2088, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2022-12-13 12:14:38,421 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2022-12-13 12:14:38,421 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 2088 flow [2022-12-13 12:14:38,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:38,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:38,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:38,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:14:38,422 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1059704315, now seen corresponding path program 12 times [2022-12-13 12:14:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:38,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276457994] [2022-12-13 12:14:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:38,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:38,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:38,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276457994] [2022-12-13 12:14:38,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276457994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:38,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:38,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:38,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635841930] [2022-12-13 12:14:38,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:38,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:38,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:38,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 2088 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:38,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:38,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:38,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:40,486 INFO L130 PetriNetUnfolder]: 11211/15582 cut-off events. [2022-12-13 12:14:40,486 INFO L131 PetriNetUnfolder]: For 169999/172283 co-relation queries the response was YES. [2022-12-13 12:14:40,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90358 conditions, 15582 events. 11211/15582 cut-off events. For 169999/172283 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 85678 event pairs, 2950 based on Foata normal form. 2212/17536 useless extension candidates. Maximal degree in co-relation 90313. Up to 6801 conditions per place. [2022-12-13 12:14:40,620 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 151 selfloop transitions, 54 changer transitions 2/217 dead transitions. [2022-12-13 12:14:40,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 217 transitions, 3136 flow [2022-12-13 12:14:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2022-12-13 12:14:40,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49516728624535317 [2022-12-13 12:14:40,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2022-12-13 12:14:40,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2022-12-13 12:14:40,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:40,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2022-12-13 12:14:40,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:40,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:40,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:40,625 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 2088 flow. Second operand 5 states and 666 transitions. [2022-12-13 12:14:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 217 transitions, 3136 flow [2022-12-13 12:14:41,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 217 transitions, 3082 flow, removed 20 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:41,015 INFO L231 Difference]: Finished difference. Result has 128 places, 146 transitions, 2307 flow [2022-12-13 12:14:41,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2307, PETRI_PLACES=128, PETRI_TRANSITIONS=146} [2022-12-13 12:14:41,016 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2022-12-13 12:14:41,016 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 146 transitions, 2307 flow [2022-12-13 12:14:41,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:41,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:41,016 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 12:14:41,016 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1555995343, now seen corresponding path program 13 times [2022-12-13 12:14:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312023779] [2022-12-13 12:14:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:41,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312023779] [2022-12-13 12:14:41,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312023779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:41,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:41,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840020286] [2022-12-13 12:14:41,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:41,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:41,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:41,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 146 transitions, 2307 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:41,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:41,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:42,841 INFO L130 PetriNetUnfolder]: 11515/15950 cut-off events. [2022-12-13 12:14:42,841 INFO L131 PetriNetUnfolder]: For 193493/195881 co-relation queries the response was YES. [2022-12-13 12:14:42,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91912 conditions, 15950 events. 11515/15950 cut-off events. For 193493/195881 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 87323 event pairs, 4700 based on Foata normal form. 2372/17972 useless extension candidates. Maximal degree in co-relation 91866. Up to 11370 conditions per place. [2022-12-13 12:14:42,958 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 149 selfloop transitions, 36 changer transitions 1/199 dead transitions. [2022-12-13 12:14:42,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 199 transitions, 3071 flow [2022-12-13 12:14:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 654 transitions. [2022-12-13 12:14:42,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4862453531598513 [2022-12-13 12:14:42,960 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 654 transitions. [2022-12-13 12:14:42,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 654 transitions. [2022-12-13 12:14:42,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:42,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 654 transitions. [2022-12-13 12:14:42,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:42,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:42,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:42,962 INFO L175 Difference]: Start difference. First operand has 128 places, 146 transitions, 2307 flow. Second operand 5 states and 654 transitions. [2022-12-13 12:14:42,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 199 transitions, 3071 flow [2022-12-13 12:14:43,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 199 transitions, 2927 flow, removed 15 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:43,308 INFO L231 Difference]: Finished difference. Result has 130 places, 149 transitions, 2304 flow [2022-12-13 12:14:43,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2304, PETRI_PLACES=130, PETRI_TRANSITIONS=149} [2022-12-13 12:14:43,308 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2022-12-13 12:14:43,308 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 149 transitions, 2304 flow [2022-12-13 12:14:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:43,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:43,308 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:43,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 12:14:43,309 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1231697585, now seen corresponding path program 14 times [2022-12-13 12:14:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:43,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856233732] [2022-12-13 12:14:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:43,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:43,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856233732] [2022-12-13 12:14:43,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856233732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:43,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:43,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149560592] [2022-12-13 12:14:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:43,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:43,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:43,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 149 transitions, 2304 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:43,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:43,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:43,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:45,219 INFO L130 PetriNetUnfolder]: 12421/17101 cut-off events. [2022-12-13 12:14:45,219 INFO L131 PetriNetUnfolder]: For 191300/195132 co-relation queries the response was YES. [2022-12-13 12:14:45,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94600 conditions, 17101 events. 12421/17101 cut-off events. For 191300/195132 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 92105 event pairs, 3435 based on Foata normal form. 2122/19060 useless extension candidates. Maximal degree in co-relation 94553. Up to 9259 conditions per place. [2022-12-13 12:14:45,339 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 251 selfloop transitions, 36 changer transitions 1/303 dead transitions. [2022-12-13 12:14:45,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 303 transitions, 4944 flow [2022-12-13 12:14:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:45,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 660 transitions. [2022-12-13 12:14:45,341 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49070631970260226 [2022-12-13 12:14:45,341 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 660 transitions. [2022-12-13 12:14:45,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 660 transitions. [2022-12-13 12:14:45,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:45,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 660 transitions. [2022-12-13 12:14:45,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:45,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:45,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:45,343 INFO L175 Difference]: Start difference. First operand has 130 places, 149 transitions, 2304 flow. Second operand 5 states and 660 transitions. [2022-12-13 12:14:45,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 303 transitions, 4944 flow [2022-12-13 12:14:45,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 303 transitions, 4788 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:45,842 INFO L231 Difference]: Finished difference. Result has 134 places, 172 transitions, 2921 flow [2022-12-13 12:14:45,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2921, PETRI_PLACES=134, PETRI_TRANSITIONS=172} [2022-12-13 12:14:45,843 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2022-12-13 12:14:45,843 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 172 transitions, 2921 flow [2022-12-13 12:14:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:45,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:45,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 12:14:45,843 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2014408539, now seen corresponding path program 6 times [2022-12-13 12:14:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:45,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526452711] [2022-12-13 12:14:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:45,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526452711] [2022-12-13 12:14:45,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526452711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:45,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:45,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370617573] [2022-12-13 12:14:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:45,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 269 [2022-12-13 12:14:45,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 172 transitions, 2921 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:45,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:45,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 269 [2022-12-13 12:14:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:47,821 INFO L130 PetriNetUnfolder]: 11789/16394 cut-off events. [2022-12-13 12:14:47,821 INFO L131 PetriNetUnfolder]: For 197375/200786 co-relation queries the response was YES. [2022-12-13 12:14:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96928 conditions, 16394 events. 11789/16394 cut-off events. For 197375/200786 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 92499 event pairs, 2718 based on Foata normal form. 2136/18155 useless extension candidates. Maximal degree in co-relation 96878. Up to 7117 conditions per place. [2022-12-13 12:14:47,923 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 165 selfloop transitions, 42 changer transitions 26/255 dead transitions. [2022-12-13 12:14:47,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 255 transitions, 4122 flow [2022-12-13 12:14:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2022-12-13 12:14:47,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4966542750929368 [2022-12-13 12:14:47,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2022-12-13 12:14:47,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2022-12-13 12:14:47,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:47,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2022-12-13 12:14:47,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:47,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:47,928 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:47,928 INFO L175 Difference]: Start difference. First operand has 134 places, 172 transitions, 2921 flow. Second operand 5 states and 668 transitions. [2022-12-13 12:14:47,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 255 transitions, 4122 flow [2022-12-13 12:14:48,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 255 transitions, 4070 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-12-13 12:14:48,389 INFO L231 Difference]: Finished difference. Result has 139 places, 172 transitions, 3005 flow [2022-12-13 12:14:48,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3005, PETRI_PLACES=139, PETRI_TRANSITIONS=172} [2022-12-13 12:14:48,389 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2022-12-13 12:14:48,389 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 172 transitions, 3005 flow [2022-12-13 12:14:48,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:48,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:48,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 12:14:48,389 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2033505039, now seen corresponding path program 7 times [2022-12-13 12:14:48,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:48,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728505488] [2022-12-13 12:14:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:48,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728505488] [2022-12-13 12:14:48,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728505488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:48,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:48,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407466053] [2022-12-13 12:14:48,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:48,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:48,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:48,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:48,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:48,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:48,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 172 transitions, 3005 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:48,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:48,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:48,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:50,166 INFO L130 PetriNetUnfolder]: 10639/14590 cut-off events. [2022-12-13 12:14:50,166 INFO L131 PetriNetUnfolder]: For 192191/194788 co-relation queries the response was YES. [2022-12-13 12:14:50,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86809 conditions, 14590 events. 10639/14590 cut-off events. For 192191/194788 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 78276 event pairs, 2595 based on Foata normal form. 1706/15933 useless extension candidates. Maximal degree in co-relation 86757. Up to 6885 conditions per place. [2022-12-13 12:14:50,347 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 159 selfloop transitions, 49 changer transitions 26/250 dead transitions. [2022-12-13 12:14:50,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 250 transitions, 4153 flow [2022-12-13 12:14:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2022-12-13 12:14:50,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4966542750929368 [2022-12-13 12:14:50,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2022-12-13 12:14:50,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2022-12-13 12:14:50,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:50,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2022-12-13 12:14:50,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:50,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:50,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:50,351 INFO L175 Difference]: Start difference. First operand has 139 places, 172 transitions, 3005 flow. Second operand 5 states and 668 transitions. [2022-12-13 12:14:50,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 250 transitions, 4153 flow [2022-12-13 12:14:50,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 250 transitions, 4037 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-12-13 12:14:50,719 INFO L231 Difference]: Finished difference. Result has 140 places, 158 transitions, 2698 flow [2022-12-13 12:14:50,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2698, PETRI_PLACES=140, PETRI_TRANSITIONS=158} [2022-12-13 12:14:50,720 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2022-12-13 12:14:50,720 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 158 transitions, 2698 flow [2022-12-13 12:14:50,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:50,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:50,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:50,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 12:14:50,720 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash 735578577, now seen corresponding path program 15 times [2022-12-13 12:14:50,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:50,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59222972] [2022-12-13 12:14:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:50,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:50,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59222972] [2022-12-13 12:14:50,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59222972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:14:50,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:14:50,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:14:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170462587] [2022-12-13 12:14:50,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:14:50,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:14:50,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:14:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:14:50,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:14:50,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 158 transitions, 2698 flow. Second operand has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:50,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:50,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:14:50,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:52,136 INFO L130 PetriNetUnfolder]: 8430/11397 cut-off events. [2022-12-13 12:14:52,136 INFO L131 PetriNetUnfolder]: For 151713/153623 co-relation queries the response was YES. [2022-12-13 12:14:52,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68744 conditions, 11397 events. 8430/11397 cut-off events. For 151713/153623 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 56768 event pairs, 2537 based on Foata normal form. 1914/13119 useless extension candidates. Maximal degree in co-relation 68692. Up to 7857 conditions per place. [2022-12-13 12:14:52,221 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 122 selfloop transitions, 56 changer transitions 9/200 dead transitions. [2022-12-13 12:14:52,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 200 transitions, 3371 flow [2022-12-13 12:14:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-12-13 12:14:52,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48252788104089217 [2022-12-13 12:14:52,223 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-12-13 12:14:52,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-12-13 12:14:52,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:52,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-12-13 12:14:52,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:52,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:52,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:52,226 INFO L175 Difference]: Start difference. First operand has 140 places, 158 transitions, 2698 flow. Second operand 5 states and 649 transitions. [2022-12-13 12:14:52,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 200 transitions, 3371 flow [2022-12-13 12:14:52,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 200 transitions, 3167 flow, removed 51 selfloop flow, removed 5 redundant places. [2022-12-13 12:14:52,657 INFO L231 Difference]: Finished difference. Result has 136 places, 151 transitions, 2502 flow [2022-12-13 12:14:52,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2502, PETRI_PLACES=136, PETRI_TRANSITIONS=151} [2022-12-13 12:14:52,658 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2022-12-13 12:14:52,658 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 151 transitions, 2502 flow [2022-12-13 12:14:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:52,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:52,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 12:14:52,658 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash -628169750, now seen corresponding path program 1 times [2022-12-13 12:14:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765413905] [2022-12-13 12:14:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765413905] [2022-12-13 12:14:52,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765413905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945566979] [2022-12-13 12:14:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:52,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:52,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:52,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:52,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:14:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:52,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:52,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:52,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:14:52,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945566979] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:52,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:52,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 12:14:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925155136] [2022-12-13 12:14:52,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:14:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:14:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:14:52,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:52,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 151 transitions, 2502 flow. Second operand has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:52,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:52,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:52,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:54,273 INFO L130 PetriNetUnfolder]: 8911/12002 cut-off events. [2022-12-13 12:14:54,274 INFO L131 PetriNetUnfolder]: For 139032/140872 co-relation queries the response was YES. [2022-12-13 12:14:54,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71087 conditions, 12002 events. 8911/12002 cut-off events. For 139032/140872 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 59447 event pairs, 1581 based on Foata normal form. 1718/13572 useless extension candidates. Maximal degree in co-relation 71037. Up to 7925 conditions per place. [2022-12-13 12:14:54,356 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 170 selfloop transitions, 37 changer transitions 8/228 dead transitions. [2022-12-13 12:14:54,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 228 transitions, 3731 flow [2022-12-13 12:14:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 651 transitions. [2022-12-13 12:14:54,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48401486988847586 [2022-12-13 12:14:54,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 651 transitions. [2022-12-13 12:14:54,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 651 transitions. [2022-12-13 12:14:54,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:54,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 651 transitions. [2022-12-13 12:14:54,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:54,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:54,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:54,359 INFO L175 Difference]: Start difference. First operand has 136 places, 151 transitions, 2502 flow. Second operand 5 states and 651 transitions. [2022-12-13 12:14:54,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 228 transitions, 3731 flow [2022-12-13 12:14:54,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 228 transitions, 3434 flow, removed 20 selfloop flow, removed 13 redundant places. [2022-12-13 12:14:54,797 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 2686 flow [2022-12-13 12:14:54,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2686, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2022-12-13 12:14:54,797 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2022-12-13 12:14:54,797 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 2686 flow [2022-12-13 12:14:54,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:54,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:54,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:54,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:14:54,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 12:14:54,999 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -972519356, now seen corresponding path program 2 times [2022-12-13 12:14:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550932523] [2022-12-13 12:14:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:14:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:55,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550932523] [2022-12-13 12:14:55,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550932523] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:55,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851924960] [2022-12-13 12:14:55,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:14:55,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:55,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:55,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:55,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:14:55,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:14:55,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:55,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:55,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:14:55,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:14:55,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851924960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:55,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:55,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:14:55,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496560730] [2022-12-13 12:14:55,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:55,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:14:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:14:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:14:55,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:55,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 119.8) internal successors, (1198), 10 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:55,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:55,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:55,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:56,821 INFO L130 PetriNetUnfolder]: 10522/14107 cut-off events. [2022-12-13 12:14:56,821 INFO L131 PetriNetUnfolder]: For 170701/173073 co-relation queries the response was YES. [2022-12-13 12:14:56,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84144 conditions, 14107 events. 10522/14107 cut-off events. For 170701/173073 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 71060 event pairs, 1696 based on Foata normal form. 2206/16143 useless extension candidates. Maximal degree in co-relation 84101. Up to 8246 conditions per place. [2022-12-13 12:14:56,930 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 196 selfloop transitions, 70 changer transitions 14/293 dead transitions. [2022-12-13 12:14:56,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 293 transitions, 4449 flow [2022-12-13 12:14:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:14:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:14:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1033 transitions. [2022-12-13 12:14:56,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4800185873605948 [2022-12-13 12:14:56,932 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1033 transitions. [2022-12-13 12:14:56,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1033 transitions. [2022-12-13 12:14:56,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:56,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1033 transitions. [2022-12-13 12:14:56,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.125) internal successors, (1033), 8 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:56,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:56,934 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:56,935 INFO L175 Difference]: Start difference. First operand has 123 places, 164 transitions, 2686 flow. Second operand 8 states and 1033 transitions. [2022-12-13 12:14:56,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 293 transitions, 4449 flow [2022-12-13 12:14:57,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 293 transitions, 4387 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 12:14:57,665 INFO L231 Difference]: Finished difference. Result has 130 places, 182 transitions, 3244 flow [2022-12-13 12:14:57,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3244, PETRI_PLACES=130, PETRI_TRANSITIONS=182} [2022-12-13 12:14:57,666 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2022-12-13 12:14:57,666 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 182 transitions, 3244 flow [2022-12-13 12:14:57,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.8) internal successors, (1198), 10 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:57,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:14:57,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:14:57,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:14:57,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 12:14:57,867 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:14:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:14:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash 133130806, now seen corresponding path program 3 times [2022-12-13 12:14:57,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:14:57,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485880272] [2022-12-13 12:14:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:14:57,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:14:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:14:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:14:57,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:14:57,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485880272] [2022-12-13 12:14:57,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485880272] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:14:57,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658201126] [2022-12-13 12:14:57,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:14:57,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:14:57,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:14:57,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:14:57,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:14:58,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:14:58,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:14:58,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:14:58,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:14:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:14:58,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:14:58,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658201126] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:14:58,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:14:58,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:14:58,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40076462] [2022-12-13 12:14:58,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:14:58,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:14:58,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:14:58,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:14:58,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:14:58,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:14:58,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 182 transitions, 3244 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:58,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:14:58,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:14:58,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:59,634 INFO L130 PetriNetUnfolder]: 10017/13317 cut-off events. [2022-12-13 12:14:59,634 INFO L131 PetriNetUnfolder]: For 176837/179331 co-relation queries the response was YES. [2022-12-13 12:14:59,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82313 conditions, 13317 events. 10017/13317 cut-off events. For 176837/179331 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 65869 event pairs, 2743 based on Foata normal form. 2340/15439 useless extension candidates. Maximal degree in co-relation 82268. Up to 8681 conditions per place. [2022-12-13 12:14:59,734 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 118 selfloop transitions, 80 changer transitions 14/224 dead transitions. [2022-12-13 12:14:59,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 224 transitions, 3919 flow [2022-12-13 12:14:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:14:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:14:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2022-12-13 12:14:59,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788104089219331 [2022-12-13 12:14:59,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2022-12-13 12:14:59,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2022-12-13 12:14:59,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:14:59,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2022-12-13 12:14:59,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:59,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:59,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:14:59,740 INFO L175 Difference]: Start difference. First operand has 130 places, 182 transitions, 3244 flow. Second operand 5 states and 644 transitions. [2022-12-13 12:14:59,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 224 transitions, 3919 flow [2022-12-13 12:15:00,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 224 transitions, 3757 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-12-13 12:15:00,603 INFO L231 Difference]: Finished difference. Result has 129 places, 173 transitions, 3067 flow [2022-12-13 12:15:00,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3067, PETRI_PLACES=129, PETRI_TRANSITIONS=173} [2022-12-13 12:15:00,604 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2022-12-13 12:15:00,604 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 173 transitions, 3067 flow [2022-12-13 12:15:00,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:00,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:00,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:00,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:15:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:00,806 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1091796045, now seen corresponding path program 1 times [2022-12-13 12:15:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:00,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858412837] [2022-12-13 12:15:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:15:00,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858412837] [2022-12-13 12:15:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858412837] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754843985] [2022-12-13 12:15:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:00,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:00,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:00,880 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:00,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:15:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:00,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:15:00,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:15:01,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:15:01,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754843985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:15:01,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:15:01,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-13 12:15:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065674487] [2022-12-13 12:15:01,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:01,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:15:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:01,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:15:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:15:01,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:15:01,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 173 transitions, 3067 flow. Second operand has 8 states, 8 states have (on average 121.125) internal successors, (969), 8 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:01,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:01,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:15:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:02,792 INFO L130 PetriNetUnfolder]: 11882/15570 cut-off events. [2022-12-13 12:15:02,792 INFO L131 PetriNetUnfolder]: For 177838/179785 co-relation queries the response was YES. [2022-12-13 12:15:02,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95541 conditions, 15570 events. 11882/15570 cut-off events. For 177838/179785 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 73824 event pairs, 1664 based on Foata normal form. 1388/16696 useless extension candidates. Maximal degree in co-relation 95496. Up to 10300 conditions per place. [2022-12-13 12:15:02,910 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 211 selfloop transitions, 31 changer transitions 0/263 dead transitions. [2022-12-13 12:15:02,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 263 transitions, 4458 flow [2022-12-13 12:15:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:15:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:15:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 651 transitions. [2022-12-13 12:15:02,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48401486988847586 [2022-12-13 12:15:02,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 651 transitions. [2022-12-13 12:15:02,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 651 transitions. [2022-12-13 12:15:02,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:02,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 651 transitions. [2022-12-13 12:15:02,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:02,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:02,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:02,916 INFO L175 Difference]: Start difference. First operand has 129 places, 173 transitions, 3067 flow. Second operand 5 states and 651 transitions. [2022-12-13 12:15:02,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 263 transitions, 4458 flow [2022-12-13 12:15:03,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 263 transitions, 4075 flow, removed 78 selfloop flow, removed 10 redundant places. [2022-12-13 12:15:03,619 INFO L231 Difference]: Finished difference. Result has 118 places, 180 transitions, 2913 flow [2022-12-13 12:15:03,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2913, PETRI_PLACES=118, PETRI_TRANSITIONS=180} [2022-12-13 12:15:03,620 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2022-12-13 12:15:03,620 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 180 transitions, 2913 flow [2022-12-13 12:15:03,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.125) internal successors, (969), 8 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:03,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:03,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:03,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 12:15:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:03,822 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990643, now seen corresponding path program 2 times [2022-12-13 12:15:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:03,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697232388] [2022-12-13 12:15:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:03,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697232388] [2022-12-13 12:15:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697232388] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:03,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162340960] [2022-12-13 12:15:03,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:15:03,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:03,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:03,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:03,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:15:03,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:15:03,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:15:03,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:15:03,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:04,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:04,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162340960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:15:04,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:15:04,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:15:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377015249] [2022-12-13 12:15:04,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:15:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:15:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:15:04,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:15:04,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 180 transitions, 2913 flow. Second operand has 10 states, 10 states have (on average 120.3) internal successors, (1203), 10 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:04,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:04,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:15:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:06,156 INFO L130 PetriNetUnfolder]: 14241/18665 cut-off events. [2022-12-13 12:15:06,156 INFO L131 PetriNetUnfolder]: For 203931/206970 co-relation queries the response was YES. [2022-12-13 12:15:06,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112056 conditions, 18665 events. 14241/18665 cut-off events. For 203931/206970 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 91256 event pairs, 2693 based on Foata normal form. 2094/20587 useless extension candidates. Maximal degree in co-relation 112016. Up to 11177 conditions per place. [2022-12-13 12:15:06,289 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 278 selfloop transitions, 44 changer transitions 0/343 dead transitions. [2022-12-13 12:15:06,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 343 transitions, 5670 flow [2022-12-13 12:15:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:15:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:15:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 650 transitions. [2022-12-13 12:15:06,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.483271375464684 [2022-12-13 12:15:06,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 650 transitions. [2022-12-13 12:15:06,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 650 transitions. [2022-12-13 12:15:06,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:06,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 650 transitions. [2022-12-13 12:15:06,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:06,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:06,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:06,292 INFO L175 Difference]: Start difference. First operand has 118 places, 180 transitions, 2913 flow. Second operand 5 states and 650 transitions. [2022-12-13 12:15:06,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 343 transitions, 5670 flow [2022-12-13 12:15:06,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 343 transitions, 5592 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:15:06,763 INFO L231 Difference]: Finished difference. Result has 123 places, 210 transitions, 3543 flow [2022-12-13 12:15:06,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3543, PETRI_PLACES=123, PETRI_TRANSITIONS=210} [2022-12-13 12:15:06,764 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2022-12-13 12:15:06,764 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 210 transitions, 3543 flow [2022-12-13 12:15:06,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.3) internal successors, (1203), 10 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:06,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:06,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:06,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 12:15:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:06,968 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:06,969 INFO L85 PathProgramCache]: Analyzing trace with hash 89491953, now seen corresponding path program 3 times [2022-12-13 12:15:06,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:06,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919083232] [2022-12-13 12:15:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:06,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:15:07,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:07,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919083232] [2022-12-13 12:15:07,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919083232] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:07,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482815719] [2022-12-13 12:15:07,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:15:07,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:07,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:07,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 12:15:07,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:15:07,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:15:07,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:15:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:15:07,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:15:07,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482815719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:15:07,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:15:07,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-13 12:15:07,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279411444] [2022-12-13 12:15:07,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:15:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:15:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:15:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:15:07,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:15:07,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 210 transitions, 3543 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:07,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:07,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:15:07,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:10,112 INFO L130 PetriNetUnfolder]: 19053/25175 cut-off events. [2022-12-13 12:15:10,113 INFO L131 PetriNetUnfolder]: For 279879/280944 co-relation queries the response was YES. [2022-12-13 12:15:10,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158243 conditions, 25175 events. 19053/25175 cut-off events. For 279879/280944 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 129305 event pairs, 1747 based on Foata normal form. 648/25546 useless extension candidates. Maximal degree in co-relation 158200. Up to 16680 conditions per place. [2022-12-13 12:15:10,279 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 312 selfloop transitions, 73 changer transitions 0/409 dead transitions. [2022-12-13 12:15:10,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 409 transitions, 7196 flow [2022-12-13 12:15:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:15:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:15:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2022-12-13 12:15:10,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48921933085501856 [2022-12-13 12:15:10,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 658 transitions. [2022-12-13 12:15:10,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 658 transitions. [2022-12-13 12:15:10,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:10,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 658 transitions. [2022-12-13 12:15:10,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:10,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:10,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:10,283 INFO L175 Difference]: Start difference. First operand has 123 places, 210 transitions, 3543 flow. Second operand 5 states and 658 transitions. [2022-12-13 12:15:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 409 transitions, 7196 flow [2022-12-13 12:15:11,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 409 transitions, 7096 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-12-13 12:15:11,120 INFO L231 Difference]: Finished difference. Result has 129 places, 274 transitions, 4742 flow [2022-12-13 12:15:11,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4742, PETRI_PLACES=129, PETRI_TRANSITIONS=274} [2022-12-13 12:15:11,120 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2022-12-13 12:15:11,120 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 274 transitions, 4742 flow [2022-12-13 12:15:11,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:11,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:11,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:11,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 12:15:11,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 12:15:11,322 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2101091217, now seen corresponding path program 4 times [2022-12-13 12:15:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:11,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023401064] [2022-12-13 12:15:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023401064] [2022-12-13 12:15:11,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023401064] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835643809] [2022-12-13 12:15:11,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:15:11,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:11,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:11,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:15:11,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:15:11,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:15:11,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:15:11,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:11,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:11,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835643809] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:15:11,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:15:11,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:15:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877217994] [2022-12-13 12:15:11,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:11,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:15:11,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:15:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:15:11,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:15:11,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 274 transitions, 4742 flow. Second operand has 10 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:11,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:11,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:15:11,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:14,959 INFO L130 PetriNetUnfolder]: 20833/27537 cut-off events. [2022-12-13 12:15:14,960 INFO L131 PetriNetUnfolder]: For 392364/395100 co-relation queries the response was YES. [2022-12-13 12:15:15,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185404 conditions, 27537 events. 20833/27537 cut-off events. For 392364/395100 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 143631 event pairs, 1977 based on Foata normal form. 1920/29111 useless extension candidates. Maximal degree in co-relation 185358. Up to 16816 conditions per place. [2022-12-13 12:15:15,171 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 374 selfloop transitions, 124 changer transitions 0/519 dead transitions. [2022-12-13 12:15:15,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 519 transitions, 9057 flow [2022-12-13 12:15:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:15:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:15:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1037 transitions. [2022-12-13 12:15:15,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48187732342007433 [2022-12-13 12:15:15,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1037 transitions. [2022-12-13 12:15:15,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1037 transitions. [2022-12-13 12:15:15,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:15,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1037 transitions. [2022-12-13 12:15:15,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:15,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:15,176 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:15,176 INFO L175 Difference]: Start difference. First operand has 129 places, 274 transitions, 4742 flow. Second operand 8 states and 1037 transitions. [2022-12-13 12:15:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 519 transitions, 9057 flow [2022-12-13 12:15:16,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 519 transitions, 9048 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:15:16,143 INFO L231 Difference]: Finished difference. Result has 138 places, 326 transitions, 6051 flow [2022-12-13 12:15:16,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=4733, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6051, PETRI_PLACES=138, PETRI_TRANSITIONS=326} [2022-12-13 12:15:16,144 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 83 predicate places. [2022-12-13 12:15:16,144 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 326 transitions, 6051 flow [2022-12-13 12:15:16,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:16,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:16,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:16,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 12:15:16,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 12:15:16,345 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -864105485, now seen corresponding path program 5 times [2022-12-13 12:15:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:16,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232627388] [2022-12-13 12:15:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:16,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:16,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232627388] [2022-12-13 12:15:16,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232627388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:15:16,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:15:16,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:15:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125589154] [2022-12-13 12:15:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:15:16,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:15:16,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:16,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:15:16,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:15:16,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:15:16,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 326 transitions, 6051 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:16,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:16,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:15:16,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:20,413 INFO L130 PetriNetUnfolder]: 23037/30493 cut-off events. [2022-12-13 12:15:20,413 INFO L131 PetriNetUnfolder]: For 465963/468111 co-relation queries the response was YES. [2022-12-13 12:15:20,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213578 conditions, 30493 events. 23037/30493 cut-off events. For 465963/468111 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 162372 event pairs, 4834 based on Foata normal form. 1480/31656 useless extension candidates. Maximal degree in co-relation 213529. Up to 18656 conditions per place. [2022-12-13 12:15:20,644 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 313 selfloop transitions, 114 changer transitions 0/448 dead transitions. [2022-12-13 12:15:20,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 448 transitions, 8600 flow [2022-12-13 12:15:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:15:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:15:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 653 transitions. [2022-12-13 12:15:20,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4855018587360595 [2022-12-13 12:15:20,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 653 transitions. [2022-12-13 12:15:20,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 653 transitions. [2022-12-13 12:15:20,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:20,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 653 transitions. [2022-12-13 12:15:20,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:20,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:20,648 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:20,648 INFO L175 Difference]: Start difference. First operand has 138 places, 326 transitions, 6051 flow. Second operand 5 states and 653 transitions. [2022-12-13 12:15:20,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 448 transitions, 8600 flow [2022-12-13 12:15:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 448 transitions, 8360 flow, removed 48 selfloop flow, removed 2 redundant places. [2022-12-13 12:15:22,496 INFO L231 Difference]: Finished difference. Result has 141 places, 347 transitions, 6584 flow [2022-12-13 12:15:22,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=5865, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6584, PETRI_PLACES=141, PETRI_TRANSITIONS=347} [2022-12-13 12:15:22,497 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2022-12-13 12:15:22,497 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 347 transitions, 6584 flow [2022-12-13 12:15:22,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:22,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:22,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 12:15:22,497 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:22,497 INFO L85 PathProgramCache]: Analyzing trace with hash 24566943, now seen corresponding path program 6 times [2022-12-13 12:15:22,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:22,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847669563] [2022-12-13 12:15:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:22,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:22,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847669563] [2022-12-13 12:15:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847669563] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:22,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365933992] [2022-12-13 12:15:22,536 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:15:22,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:22,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:22,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 12:15:22,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 12:15:22,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:15:22,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:15:22,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:22,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:15:22,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365933992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:15:22,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:15:22,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-13 12:15:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036546523] [2022-12-13 12:15:22,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:15:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:15:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:15:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:15:22,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2022-12-13 12:15:22,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 347 transitions, 6584 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:22,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:22,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2022-12-13 12:15:22,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:26,969 INFO L130 PetriNetUnfolder]: 23396/30896 cut-off events. [2022-12-13 12:15:26,970 INFO L131 PetriNetUnfolder]: For 503070/504354 co-relation queries the response was YES. [2022-12-13 12:15:27,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219324 conditions, 30896 events. 23396/30896 cut-off events. For 503070/504354 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 162737 event pairs, 2313 based on Foata normal form. 814/31443 useless extension candidates. Maximal degree in co-relation 219273. Up to 19939 conditions per place. [2022-12-13 12:15:27,219 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 372 selfloop transitions, 76 changer transitions 16/488 dead transitions. [2022-12-13 12:15:27,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 488 transitions, 9964 flow [2022-12-13 12:15:27,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:15:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:15:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-12-13 12:15:27,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48252788104089217 [2022-12-13 12:15:27,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-12-13 12:15:27,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-12-13 12:15:27,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:27,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-12-13 12:15:27,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:27,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:27,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:27,223 INFO L175 Difference]: Start difference. First operand has 141 places, 347 transitions, 6584 flow. Second operand 5 states and 649 transitions. [2022-12-13 12:15:27,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 488 transitions, 9964 flow [2022-12-13 12:15:29,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 488 transitions, 9656 flow, removed 56 selfloop flow, removed 2 redundant places. [2022-12-13 12:15:29,179 INFO L231 Difference]: Finished difference. Result has 145 places, 347 transitions, 6588 flow [2022-12-13 12:15:29,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=6353, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6588, PETRI_PLACES=145, PETRI_TRANSITIONS=347} [2022-12-13 12:15:29,180 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2022-12-13 12:15:29,180 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 347 transitions, 6588 flow [2022-12-13 12:15:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:29,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:29,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:29,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 12:15:29,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:29,382 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:29,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1588698689, now seen corresponding path program 7 times [2022-12-13 12:15:29,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:29,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671845669] [2022-12-13 12:15:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:29,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:29,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671845669] [2022-12-13 12:15:29,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671845669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:29,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765540019] [2022-12-13 12:15:29,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:15:29,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:29,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:29,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:29,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 12:15:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:15:29,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:29,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:29,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765540019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:15:29,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:15:29,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 12:15:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28230154] [2022-12-13 12:15:29,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:29,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:15:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:15:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:15:29,621 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:15:29,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 347 transitions, 6588 flow. Second operand has 10 states, 10 states have (on average 119.9) internal successors, (1199), 10 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:29,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:29,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:15:29,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:33,605 INFO L130 PetriNetUnfolder]: 21765/28678 cut-off events. [2022-12-13 12:15:33,605 INFO L131 PetriNetUnfolder]: For 474724/476535 co-relation queries the response was YES. [2022-12-13 12:15:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205890 conditions, 28678 events. 21765/28678 cut-off events. For 474724/476535 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 148787 event pairs, 3055 based on Foata normal form. 1506/29938 useless extension candidates. Maximal degree in co-relation 205837. Up to 17497 conditions per place. [2022-12-13 12:15:33,879 INFO L137 encePairwiseOnDemand]: 264/269 looper letters, 312 selfloop transitions, 144 changer transitions 1/478 dead transitions. [2022-12-13 12:15:33,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 478 transitions, 9252 flow [2022-12-13 12:15:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:15:33,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:15:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-12-13 12:15:33,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48252788104089217 [2022-12-13 12:15:33,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-12-13 12:15:33,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-12-13 12:15:33,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:33,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-12-13 12:15:33,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:33,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:33,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:33,884 INFO L175 Difference]: Start difference. First operand has 145 places, 347 transitions, 6588 flow. Second operand 5 states and 649 transitions. [2022-12-13 12:15:33,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 478 transitions, 9252 flow [2022-12-13 12:15:36,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 478 transitions, 9060 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-12-13 12:15:36,266 INFO L231 Difference]: Finished difference. Result has 144 places, 358 transitions, 6946 flow [2022-12-13 12:15:36,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6946, PETRI_PLACES=144, PETRI_TRANSITIONS=358} [2022-12-13 12:15:36,267 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 89 predicate places. [2022-12-13 12:15:36,267 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 358 transitions, 6946 flow [2022-12-13 12:15:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.9) internal successors, (1199), 10 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:36,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:36,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:36,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 12:15:36,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:36,469 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash -2085674444, now seen corresponding path program 1 times [2022-12-13 12:15:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:36,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267811114] [2022-12-13 12:15:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:15:36,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:36,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267811114] [2022-12-13 12:15:36,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267811114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:15:36,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:15:36,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:15:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978629830] [2022-12-13 12:15:36,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:15:36,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:15:36,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:15:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:15:36,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 269 [2022-12-13 12:15:36,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 358 transitions, 6946 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:36,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:36,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 269 [2022-12-13 12:15:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:39,615 INFO L130 PetriNetUnfolder]: 17252/22946 cut-off events. [2022-12-13 12:15:39,616 INFO L131 PetriNetUnfolder]: For 452939/459115 co-relation queries the response was YES. [2022-12-13 12:15:39,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163621 conditions, 22946 events. 17252/22946 cut-off events. For 452939/459115 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 121617 event pairs, 2030 based on Foata normal form. 3330/24924 useless extension candidates. Maximal degree in co-relation 163569. Up to 18035 conditions per place. [2022-12-13 12:15:39,797 INFO L137 encePairwiseOnDemand]: 266/269 looper letters, 230 selfloop transitions, 64 changer transitions 0/345 dead transitions. [2022-12-13 12:15:39,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 345 transitions, 7007 flow [2022-12-13 12:15:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:15:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:15:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2022-12-13 12:15:39,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5117719950433705 [2022-12-13 12:15:39,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2022-12-13 12:15:39,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2022-12-13 12:15:39,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:39,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2022-12-13 12:15:39,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:39,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:39,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:39,800 INFO L175 Difference]: Start difference. First operand has 144 places, 358 transitions, 6946 flow. Second operand 3 states and 413 transitions. [2022-12-13 12:15:39,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 345 transitions, 7007 flow [2022-12-13 12:15:40,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 345 transitions, 6293 flow, removed 96 selfloop flow, removed 12 redundant places. [2022-12-13 12:15:40,973 INFO L231 Difference]: Finished difference. Result has 133 places, 322 transitions, 5604 flow [2022-12-13 12:15:40,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=5476, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5604, PETRI_PLACES=133, PETRI_TRANSITIONS=322} [2022-12-13 12:15:40,974 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2022-12-13 12:15:40,974 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 322 transitions, 5604 flow [2022-12-13 12:15:40,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:40,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:40,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-13 12:15:40,974 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 159784594, now seen corresponding path program 2 times [2022-12-13 12:15:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:40,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439744854] [2022-12-13 12:15:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:15:41,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439744854] [2022-12-13 12:15:41,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439744854] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466274623] [2022-12-13 12:15:41,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:15:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:41,083 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:41,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 12:15:41,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:15:41,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:15:41,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:15:41,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:41,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:15:41,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466274623] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:15:41,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:15:41,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-12-13 12:15:41,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167066744] [2022-12-13 12:15:41,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:41,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:15:41,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:15:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:15:41,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 269 [2022-12-13 12:15:41,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 322 transitions, 5604 flow. Second operand has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:41,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:41,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 269 [2022-12-13 12:15:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:15:50,033 INFO L130 PetriNetUnfolder]: 50535/67432 cut-off events. [2022-12-13 12:15:50,033 INFO L131 PetriNetUnfolder]: For 788294/801255 co-relation queries the response was YES. [2022-12-13 12:15:50,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406736 conditions, 67432 events. 50535/67432 cut-off events. For 788294/801255 co-relation queries the response was YES. Maximal size of possible extension queue 3197. Compared 406893 event pairs, 3556 based on Foata normal form. 6894/72258 useless extension candidates. Maximal degree in co-relation 406692. Up to 40681 conditions per place. [2022-12-13 12:15:50,667 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 308 selfloop transitions, 406 changer transitions 4/769 dead transitions. [2022-12-13 12:15:50,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 769 transitions, 12876 flow [2022-12-13 12:15:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:15:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:15:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1139 transitions. [2022-12-13 12:15:50,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.529275092936803 [2022-12-13 12:15:50,669 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1139 transitions. [2022-12-13 12:15:50,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1139 transitions. [2022-12-13 12:15:50,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:50,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1139 transitions. [2022-12-13 12:15:50,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:50,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:50,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:50,672 INFO L175 Difference]: Start difference. First operand has 133 places, 322 transitions, 5604 flow. Second operand 8 states and 1139 transitions. [2022-12-13 12:15:50,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 769 transitions, 12876 flow [2022-12-13 12:15:53,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 769 transitions, 12664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:15:53,838 INFO L231 Difference]: Finished difference. Result has 142 places, 673 transitions, 12690 flow [2022-12-13 12:15:53,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=5476, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12690, PETRI_PLACES=142, PETRI_TRANSITIONS=673} [2022-12-13 12:15:53,838 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2022-12-13 12:15:53,838 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 673 transitions, 12690 flow [2022-12-13 12:15:53,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:53,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:53,839 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:53,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 12:15:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:54,039 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:15:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash -149394715, now seen corresponding path program 3 times [2022-12-13 12:15:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601570595] [2022-12-13 12:15:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:54,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:15:54,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601570595] [2022-12-13 12:15:54,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601570595] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:15:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771676155] [2022-12-13 12:15:54,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:15:54,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:15:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:15:54,100 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:15:54,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 12:15:54,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:15:54,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:15:54,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:15:54,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:15:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:15:54,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:15:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:15:54,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771676155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:15:54,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:15:54,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-12-13 12:15:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793763982] [2022-12-13 12:15:54,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:15:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:15:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:15:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:15:54,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 269 [2022-12-13 12:15:54,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 673 transitions, 12690 flow. Second operand has 12 states, 12 states have (on average 116.58333333333333) internal successors, (1399), 12 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:54,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:54,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 269 [2022-12-13 12:15:54,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:14,432 INFO L130 PetriNetUnfolder]: 93165/124440 cut-off events. [2022-12-13 12:16:14,432 INFO L131 PetriNetUnfolder]: For 1544152/1546142 co-relation queries the response was YES. [2022-12-13 12:16:15,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801264 conditions, 124440 events. 93165/124440 cut-off events. For 1544152/1546142 co-relation queries the response was YES. Maximal size of possible extension queue 4931. Compared 786303 event pairs, 12626 based on Foata normal form. 3674/127779 useless extension candidates. Maximal degree in co-relation 801216. Up to 70118 conditions per place. [2022-12-13 12:16:15,609 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 1129 selfloop transitions, 356 changer transitions 0/1497 dead transitions. [2022-12-13 12:16:15,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1497 transitions, 28051 flow [2022-12-13 12:16:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:16:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:16:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1642 transitions. [2022-12-13 12:16:15,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4695453245639119 [2022-12-13 12:16:15,611 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1642 transitions. [2022-12-13 12:16:15,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1642 transitions. [2022-12-13 12:16:15,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:15,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1642 transitions. [2022-12-13 12:16:15,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.3076923076923) internal successors, (1642), 13 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 269.0) internal successors, (3766), 14 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,616 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 269.0) internal successors, (3766), 14 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:15,616 INFO L175 Difference]: Start difference. First operand has 142 places, 673 transitions, 12690 flow. Second operand 13 states and 1642 transitions. [2022-12-13 12:16:15,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1497 transitions, 28051 flow [2022-12-13 12:16:31,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 1497 transitions, 26223 flow, removed 914 selfloop flow, removed 0 redundant places. [2022-12-13 12:16:31,021 INFO L231 Difference]: Finished difference. Result has 163 places, 921 transitions, 17602 flow [2022-12-13 12:16:31,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=11946, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17602, PETRI_PLACES=163, PETRI_TRANSITIONS=921} [2022-12-13 12:16:31,022 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2022-12-13 12:16:31,022 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 921 transitions, 17602 flow [2022-12-13 12:16:31,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.58333333333333) internal successors, (1399), 12 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:31,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:16:31,022 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:16:31,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 12:16:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-12-13 12:16:31,223 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:16:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:16:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash -505998475, now seen corresponding path program 4 times [2022-12-13 12:16:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:16:31,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451286802] [2022-12-13 12:16:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:16:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:16:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:16:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:16:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:16:31,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451286802] [2022-12-13 12:16:31,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451286802] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:16:31,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924198100] [2022-12-13 12:16:31,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:16:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:16:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:16:31,311 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:16:31,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 12:16:31,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:16:31,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:16:31,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:16:31,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:16:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:16:31,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:16:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:16:31,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924198100] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:16:31,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:16:31,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 12:16:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076665074] [2022-12-13 12:16:31,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:16:31,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:16:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:16:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:16:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:16:31,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 269 [2022-12-13 12:16:31,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 921 transitions, 17602 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:31,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:16:31,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 269 [2022-12-13 12:16:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:16:53,979 INFO L130 PetriNetUnfolder]: 90400/121099 cut-off events. [2022-12-13 12:16:53,979 INFO L131 PetriNetUnfolder]: For 1963149/1977875 co-relation queries the response was YES. [2022-12-13 12:16:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803452 conditions, 121099 events. 90400/121099 cut-off events. For 1963149/1977875 co-relation queries the response was YES. Maximal size of possible extension queue 5242. Compared 788409 event pairs, 10908 based on Foata normal form. 9026/129200 useless extension candidates. Maximal degree in co-relation 803394. Up to 49088 conditions per place. [2022-12-13 12:16:55,218 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 2064 selfloop transitions, 235 changer transitions 52/2397 dead transitions. [2022-12-13 12:16:55,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 2397 transitions, 46347 flow [2022-12-13 12:16:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:16:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:16:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1425 transitions. [2022-12-13 12:16:55,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4815816154106117 [2022-12-13 12:16:55,220 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1425 transitions. [2022-12-13 12:16:55,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1425 transitions. [2022-12-13 12:16:55,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:16:55,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1425 transitions. [2022-12-13 12:16:55,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.54545454545453) internal successors, (1425), 11 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,224 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:16:55,224 INFO L175 Difference]: Start difference. First operand has 163 places, 921 transitions, 17602 flow. Second operand 11 states and 1425 transitions. [2022-12-13 12:16:55,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 2397 transitions, 46347 flow [2022-12-13 12:17:15,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 2397 transitions, 45810 flow, removed 176 selfloop flow, removed 2 redundant places. [2022-12-13 12:17:15,038 INFO L231 Difference]: Finished difference. Result has 176 places, 1026 transitions, 20314 flow [2022-12-13 12:17:15,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=17312, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=921, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20314, PETRI_PLACES=176, PETRI_TRANSITIONS=1026} [2022-12-13 12:17:15,039 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 121 predicate places. [2022-12-13 12:17:15,039 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 1026 transitions, 20314 flow [2022-12-13 12:17:15,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:17:15,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:17:15,039 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:17:15,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 12:17:15,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:17:15,241 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:17:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:17:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1036172373, now seen corresponding path program 5 times [2022-12-13 12:17:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:17:15,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458979283] [2022-12-13 12:17:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:17:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:17:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:17:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:17:15,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:17:15,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458979283] [2022-12-13 12:17:15,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458979283] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:17:15,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264790294] [2022-12-13 12:17:15,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:17:15,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:17:15,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:17:15,306 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:17:15,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 12:17:15,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:17:15,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:17:15,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:17:15,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:17:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:15,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:17:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:17:15,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264790294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:17:15,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:17:15,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 12:17:15,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190138376] [2022-12-13 12:17:15,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:17:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:17:15,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:17:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:17:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:17:15,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 269 [2022-12-13 12:17:15,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 1026 transitions, 20314 flow. Second operand has 14 states, 14 states have (on average 114.92857142857143) internal successors, (1609), 14 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:17:15,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:17:15,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 269 [2022-12-13 12:17:15,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:18:10,311 INFO L130 PetriNetUnfolder]: 183649/246595 cut-off events. [2022-12-13 12:18:10,311 INFO L131 PetriNetUnfolder]: For 3586994/3587572 co-relation queries the response was YES. [2022-12-13 12:18:12,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677371 conditions, 246595 events. 183649/246595 cut-off events. For 3586994/3587572 co-relation queries the response was YES. Maximal size of possible extension queue 9247. Compared 1705051 event pairs, 4338 based on Foata normal form. 5742/252336 useless extension candidates. Maximal degree in co-relation 1677308. Up to 76985 conditions per place. [2022-12-13 12:18:13,310 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 3031 selfloop transitions, 1875 changer transitions 4/4926 dead transitions. [2022-12-13 12:18:13,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 4926 transitions, 94451 flow [2022-12-13 12:18:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 12:18:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 12:18:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4254 transitions. [2022-12-13 12:18:13,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4651213645309425 [2022-12-13 12:18:13,314 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4254 transitions. [2022-12-13 12:18:13,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4254 transitions. [2022-12-13 12:18:13,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:18:13,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4254 transitions. [2022-12-13 12:18:13,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 125.11764705882354) internal successors, (4254), 34 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:18:13,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 269.0) internal successors, (9415), 35 states have internal predecessors, (9415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:18:13,325 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 269.0) internal successors, (9415), 35 states have internal predecessors, (9415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:18:13,325 INFO L175 Difference]: Start difference. First operand has 176 places, 1026 transitions, 20314 flow. Second operand 34 states and 4254 transitions. [2022-12-13 12:18:13,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 4926 transitions, 94451 flow [2022-12-13 12:21:07,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 4926 transitions, 93509 flow, removed 471 selfloop flow, removed 0 redundant places. [2022-12-13 12:21:07,644 INFO L231 Difference]: Finished difference. Result has 232 places, 2559 transitions, 55141 flow [2022-12-13 12:21:07,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=20102, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=55141, PETRI_PLACES=232, PETRI_TRANSITIONS=2559} [2022-12-13 12:21:07,645 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2022-12-13 12:21:07,645 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 2559 transitions, 55141 flow [2022-12-13 12:21:07,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.92857142857143) internal successors, (1609), 14 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:21:07,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:21:07,645 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:21:07,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 12:21:07,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 12:21:07,847 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:21:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:21:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1568251225, now seen corresponding path program 6 times [2022-12-13 12:21:07,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:21:07,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894054600] [2022-12-13 12:21:07,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:21:07,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:21:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:21:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:21:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:21:07,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894054600] [2022-12-13 12:21:07,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894054600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:21:07,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332446259] [2022-12-13 12:21:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:21:07,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:21:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:21:07,906 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:21:07,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88e5cf2-e3a4-4db6-bdde-5890854d5690/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 12:21:08,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 12:21:08,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:21:08,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:21:08,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:21:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:21:08,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:21:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:21:08,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332446259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:21:08,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:21:08,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-12-13 12:21:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064613865] [2022-12-13 12:21:08,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:21:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 12:21:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:21:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 12:21:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-12-13 12:21:08,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 269 [2022-12-13 12:21:08,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 2559 transitions, 55141 flow. Second operand has 15 states, 15 states have (on average 116.13333333333334) internal successors, (1742), 15 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:21:08,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:21:08,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 269 [2022-12-13 12:21:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:24:01,077 INFO L130 PetriNetUnfolder]: 302114/414328 cut-off events. [2022-12-13 12:24:01,077 INFO L131 PetriNetUnfolder]: For 10422261/10435734 co-relation queries the response was YES. [2022-12-13 12:24:04,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452348 conditions, 414328 events. 302114/414328 cut-off events. For 10422261/10435734 co-relation queries the response was YES. Maximal size of possible extension queue 15791. Compared 3167778 event pairs, 16841 based on Foata normal form. 16984/429876 useless extension candidates. Maximal degree in co-relation 3452261. Up to 131917 conditions per place. [2022-12-13 12:24:06,643 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 7066 selfloop transitions, 1851 changer transitions 951/9936 dead transitions. [2022-12-13 12:24:06,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 9936 transitions, 211034 flow [2022-12-13 12:24:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 12:24:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-13 12:24:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 9297 transitions. [2022-12-13 12:24:06,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46081784386617103 [2022-12-13 12:24:06,652 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 9297 transitions. [2022-12-13 12:24:06,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 9297 transitions. [2022-12-13 12:24:06,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:24:06,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 9297 transitions. [2022-12-13 12:24:06,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 123.96) internal successors, (9297), 75 states have internal predecessors, (9297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:24:06,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 269.0) internal successors, (20444), 76 states have internal predecessors, (20444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:24:06,674 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 269.0) internal successors, (20444), 76 states have internal predecessors, (20444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:24:06,674 INFO L175 Difference]: Start difference. First operand has 232 places, 2559 transitions, 55141 flow. Second operand 75 states and 9297 transitions. [2022-12-13 12:24:06,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 9936 transitions, 211034 flow