./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --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_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/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_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/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_961421ab-0530-480c-9e2d-fc7859ba0e65/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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- 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 20:19:29,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:19:29,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:19:29,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:19:29,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:19:29,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:19:29,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:19:29,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:19:29,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:19:29,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:19:29,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:19:29,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:19:29,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:19:29,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:19:29,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:19:29,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:19:29,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:19:29,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:19:29,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:19:29,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:19:29,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:19:29,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:19:29,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:19:29,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:19:29,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:19:29,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:19:29,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:19:29,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:19:29,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:19:29,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:19:29,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:19:29,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:19:29,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:19:29,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:19:29,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:19:29,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:19:29,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:19:29,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:19:29,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:19:29,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:19:29,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:19:29,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 20:19:29,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:19:29,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:19:29,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:19:29,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:19:29,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:19:29,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:19:29,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:19:29,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:19:29,832 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:19:29,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:19:29,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:19:29,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:19:29,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:19:29,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:19:29,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:19:29,834 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 20:19:29,834 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 20:19:29,834 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 20:19:29,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:19:29,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:19:29,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:19:29,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:19:29,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:19:29,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:19:29,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:19:29,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:19:29,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:19:29,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:19:29,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:19:29,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:19:29,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:19:29,836 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:19:29,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:19:29,837 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:19:29,837 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_961421ab-0530-480c-9e2d-fc7859ba0e65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2022-12-13 20:19:30,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:19:30,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:19:30,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:19:30,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:19:30,054 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:19:30,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-12-13 20:19:32,613 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:19:32,811 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:19:32,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-12-13 20:19:32,822 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/data/cfab0c7e0/288db6db6d814062b4f832e550a5e85d/FLAGb3ecff72e [2022-12-13 20:19:32,836 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/data/cfab0c7e0/288db6db6d814062b4f832e550a5e85d [2022-12-13 20:19:32,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:19:32,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:19:32,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:19:32,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:19:32,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:19:32,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:19:32" (1/1) ... [2022-12-13 20:19:32,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5042243b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:32, skipping insertion in model container [2022-12-13 20:19:32,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:19:32" (1/1) ... [2022-12-13 20:19:32,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:19:32,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:19:33,034 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:19:33,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,173 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_961421ab-0530-480c-9e2d-fc7859ba0e65/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-12-13 20:19:33,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:19:33,193 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:19:33,207 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:19:33,225 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,225 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:19:33,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:19:33,229 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_961421ab-0530-480c-9e2d-fc7859ba0e65/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-12-13 20:19:33,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:19:33,265 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:19:33,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33 WrapperNode [2022-12-13 20:19:33,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:19:33,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:19:33,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:19:33,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:19:33,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,309 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-12-13 20:19:33,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:19:33,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:19:33,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:19:33,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:19:33,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:19:33,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:19:33,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:19:33,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:19:33,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (1/1) ... [2022-12-13 20:19:33,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:19:33,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:19:33,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:19:33,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:19:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:19:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:19:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:19:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:19:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-12-13 20:19:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-12-13 20:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:19:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:19:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:19:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-12-13 20:19:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-12-13 20:19:33,402 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 20:19:33,520 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:19:33,523 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:19:33,742 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:19:33,778 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:19:33,778 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:19:33,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:33 BoogieIcfgContainer [2022-12-13 20:19:33,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:19:33,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:19:33,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:19:33,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:19:33,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:19:32" (1/3) ... [2022-12-13 20:19:33,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e06ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:19:33, skipping insertion in model container [2022-12-13 20:19:33,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:19:33" (2/3) ... [2022-12-13 20:19:33,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e06ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:19:33, skipping insertion in model container [2022-12-13 20:19:33,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:33" (3/3) ... [2022-12-13 20:19:33,790 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-12-13 20:19:33,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:19:33,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 20:19:33,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:19:33,881 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:19:33,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 296 flow [2022-12-13 20:19:33,950 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 20:19:33,950 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 20:19:33,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 2/128 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. 0/107 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-12-13 20:19:33,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 296 flow [2022-12-13 20:19:33,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 123 transitions, 270 flow [2022-12-13 20:19:33,961 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:19:33,968 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 123 transitions, 270 flow [2022-12-13 20:19:33,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 123 transitions, 270 flow [2022-12-13 20:19:33,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 270 flow [2022-12-13 20:19:33,992 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 20:19:33,992 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 20:19:33,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 123 events. 2/123 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-12-13 20:19:33,994 INFO L119 LiptonReduction]: Number of co-enabled transitions 3048 [2022-12-13 20:19:37,199 INFO L134 LiptonReduction]: Checked pairs total: 10235 [2022-12-13 20:19:37,199 INFO L136 LiptonReduction]: Total number of compositions: 111 [2022-12-13 20:19:37,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:19:37,217 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;@27e49126, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:19:37,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-12-13 20:19:37,219 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:19:37,219 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:19:37,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:37,219 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:19:37,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:37,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash 471, now seen corresponding path program 1 times [2022-12-13 20:19:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050812227] [2022-12-13 20:19:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:37,318 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 20:19:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:37,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050812227] [2022-12-13 20:19:37,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050812227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:37,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:37,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:19:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369368604] [2022-12-13 20:19:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:19:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:37,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:19:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:19:37,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 243 [2022-12-13 20:19:37,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:37,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:37,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 243 [2022-12-13 20:19:37,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:37,820 INFO L130 PetriNetUnfolder]: 2989/5097 cut-off events. [2022-12-13 20:19:37,820 INFO L131 PetriNetUnfolder]: For 209/209 co-relation queries the response was YES. [2022-12-13 20:19:37,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9576 conditions, 5097 events. 2989/5097 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 38109 event pairs, 2989 based on Foata normal form. 496/4502 useless extension candidates. Maximal degree in co-relation 7651. Up to 4269 conditions per place. [2022-12-13 20:19:37,852 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 42 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2022-12-13 20:19:37,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 52 transitions, 212 flow [2022-12-13 20:19:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:19:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:19:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 278 transitions. [2022-12-13 20:19:37,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5720164609053497 [2022-12-13 20:19:37,864 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 278 transitions. [2022-12-13 20:19:37,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 278 transitions. [2022-12-13 20:19:37,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:37,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 278 transitions. [2022-12-13 20:19:37,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:37,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:37,873 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:37,874 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 138 flow. Second operand 2 states and 278 transitions. [2022-12-13 20:19:37,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 52 transitions, 212 flow [2022-12-13 20:19:37,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 20:19:37,882 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 112 flow [2022-12-13 20:19:37,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2022-12-13 20:19:37,887 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2022-12-13 20:19:37,887 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 112 flow [2022-12-13 20:19:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:37,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:37,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:19:37,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:19:37,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash 461978, now seen corresponding path program 1 times [2022-12-13 20:19:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:37,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449218856] [2022-12-13 20:19:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:37,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:19:38,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:38,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449218856] [2022-12-13 20:19:38,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449218856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:38,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:38,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:38,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792608178] [2022-12-13 20:19:38,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:38,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:38,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:38,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:38,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:38,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2022-12-13 20:19:38,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:38,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:38,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2022-12-13 20:19:38,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:38,594 INFO L130 PetriNetUnfolder]: 2854/4899 cut-off events. [2022-12-13 20:19:38,594 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:38,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9036 conditions, 4899 events. 2854/4899 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 36543 event pairs, 2854 based on Foata normal form. 0/3914 useless extension candidates. Maximal degree in co-relation 9033. Up to 4069 conditions per place. [2022-12-13 20:19:38,622 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 38 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2022-12-13 20:19:38,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 188 flow [2022-12-13 20:19:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-12-13 20:19:38,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897119341563786 [2022-12-13 20:19:38,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-12-13 20:19:38,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-12-13 20:19:38,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:38,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-12-13 20:19:38,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:38,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:38,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:38,629 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 112 flow. Second operand 3 states and 357 transitions. [2022-12-13 20:19:38,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 188 flow [2022-12-13 20:19:38,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:19:38,631 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 112 flow [2022-12-13 20:19:38,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2022-12-13 20:19:38,632 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2022-12-13 20:19:38,632 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 112 flow [2022-12-13 20:19:38,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:38,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:38,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:19:38,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:19:38,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash 461976, now seen corresponding path program 1 times [2022-12-13 20:19:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76734517] [2022-12-13 20:19:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:38,721 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 20:19:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:38,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76734517] [2022-12-13 20:19:38,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76734517] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:38,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:38,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460944503] [2022-12-13 20:19:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:38,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:38,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:38,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 243 [2022-12-13 20:19:38,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 112 flow. Second operand has 3 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 20:19:38,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:38,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 243 [2022-12-13 20:19:38,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:39,114 INFO L130 PetriNetUnfolder]: 2719/4701 cut-off events. [2022-12-13 20:19:39,114 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:39,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8643 conditions, 4701 events. 2719/4701 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 35097 event pairs, 2719 based on Foata normal form. 0/3822 useless extension candidates. Maximal degree in co-relation 8639. Up to 3871 conditions per place. [2022-12-13 20:19:39,131 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 36 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-12-13 20:19:39,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 184 flow [2022-12-13 20:19:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2022-12-13 20:19:39,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5116598079561042 [2022-12-13 20:19:39,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2022-12-13 20:19:39,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2022-12-13 20:19:39,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:39,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2022-12-13 20:19:39,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,138 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 112 flow. Second operand 3 states and 373 transitions. [2022-12-13 20:19:39,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 184 flow [2022-12-13 20:19:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:39,139 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 108 flow [2022-12-13 20:19:39,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2022-12-13 20:19:39,140 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2022-12-13 20:19:39,140 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 108 flow [2022-12-13 20:19:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 20:19:39,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:39,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:19:39,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:19:39,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 443970330, now seen corresponding path program 1 times [2022-12-13 20:19:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:39,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331794836] [2022-12-13 20:19:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:39,211 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 20:19:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331794836] [2022-12-13 20:19:39,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331794836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:39,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:39,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100474812] [2022-12-13 20:19:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:39,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2022-12-13 20:19:39,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:39,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2022-12-13 20:19:39,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:39,648 INFO L130 PetriNetUnfolder]: 2680/4578 cut-off events. [2022-12-13 20:19:39,648 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:39,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8454 conditions, 4578 events. 2680/4578 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 33886 event pairs, 2680 based on Foata normal form. 0/3699 useless extension candidates. Maximal degree in co-relation 8450. Up to 3805 conditions per place. [2022-12-13 20:19:39,666 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 34 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-12-13 20:19:39,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 176 flow [2022-12-13 20:19:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 20:19:39,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4842249657064472 [2022-12-13 20:19:39,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 20:19:39,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 20:19:39,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:39,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 20:19:39,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,672 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 108 flow. Second operand 3 states and 353 transitions. [2022-12-13 20:19:39,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 176 flow [2022-12-13 20:19:39,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:39,673 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 104 flow [2022-12-13 20:19:39,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2022-12-13 20:19:39,674 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2022-12-13 20:19:39,674 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 104 flow [2022-12-13 20:19:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:39,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:19:39,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:19:39,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:39,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 443970331, now seen corresponding path program 1 times [2022-12-13 20:19:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:39,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594368524] [2022-12-13 20:19:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:39,748 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 20:19:39,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594368524] [2022-12-13 20:19:39,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594368524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:39,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:39,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:39,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184073597] [2022-12-13 20:19:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:39,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:39,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 243 [2022-12-13 20:19:39,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:39,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:39,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 243 [2022-12-13 20:19:39,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:40,061 INFO L130 PetriNetUnfolder]: 2641/4500 cut-off events. [2022-12-13 20:19:40,061 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:40,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8310 conditions, 4500 events. 2641/4500 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 33260 event pairs, 2641 based on Foata normal form. 0/3651 useless extension candidates. Maximal degree in co-relation 8306. Up to 3739 conditions per place. [2022-12-13 20:19:40,075 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 32 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 20:19:40,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 168 flow [2022-12-13 20:19:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-12-13 20:19:40,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2022-12-13 20:19:40,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-12-13 20:19:40,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-12-13 20:19:40,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:40,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-12-13 20:19:40,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,078 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 104 flow. Second operand 3 states and 369 transitions. [2022-12-13 20:19:40,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 168 flow [2022-12-13 20:19:40,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:40,079 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 100 flow [2022-12-13 20:19:40,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2022-12-13 20:19:40,080 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -16 predicate places. [2022-12-13 20:19:40,080 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 100 flow [2022-12-13 20:19:40,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:40,080 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:40,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:19:40,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:40,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1453737127, now seen corresponding path program 1 times [2022-12-13 20:19:40,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:40,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75942341] [2022-12-13 20:19:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:40,111 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 20:19:40,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:40,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75942341] [2022-12-13 20:19:40,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75942341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:40,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:40,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865798757] [2022-12-13 20:19:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:40,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2022-12-13 20:19:40,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:40,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2022-12-13 20:19:40,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:40,417 INFO L130 PetriNetUnfolder]: 2542/4352 cut-off events. [2022-12-13 20:19:40,417 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:40,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8014 conditions, 4352 events. 2542/4352 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 32214 event pairs, 2542 based on Foata normal form. 0/3588 useless extension candidates. Maximal degree in co-relation 8010. Up to 3591 conditions per place. [2022-12-13 20:19:40,433 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 30 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 20:19:40,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 160 flow [2022-12-13 20:19:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-12-13 20:19:40,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4787379972565158 [2022-12-13 20:19:40,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-12-13 20:19:40,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-12-13 20:19:40,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:40,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-12-13 20:19:40,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,436 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 100 flow. Second operand 3 states and 349 transitions. [2022-12-13 20:19:40,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 160 flow [2022-12-13 20:19:40,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:40,437 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 96 flow [2022-12-13 20:19:40,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2022-12-13 20:19:40,438 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -18 predicate places. [2022-12-13 20:19:40,438 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 96 flow [2022-12-13 20:19:40,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:40,441 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:40,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:19:40,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1453737128, now seen corresponding path program 1 times [2022-12-13 20:19:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:40,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548014252] [2022-12-13 20:19:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:40,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:40,518 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 20:19:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:40,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548014252] [2022-12-13 20:19:40,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548014252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:40,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:40,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866863417] [2022-12-13 20:19:40,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:40,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:40,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:40,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 243 [2022-12-13 20:19:40,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:40,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 243 [2022-12-13 20:19:40,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:40,835 INFO L130 PetriNetUnfolder]: 2443/4204 cut-off events. [2022-12-13 20:19:40,835 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:40,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7718 conditions, 4204 events. 2443/4204 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31246 event pairs, 2443 based on Foata normal form. 0/3525 useless extension candidates. Maximal degree in co-relation 7714. Up to 3443 conditions per place. [2022-12-13 20:19:40,856 INFO L137 encePairwiseOnDemand]: 239/243 looper letters, 28 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 20:19:40,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 152 flow [2022-12-13 20:19:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2022-12-13 20:19:40,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5006858710562414 [2022-12-13 20:19:40,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2022-12-13 20:19:40,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2022-12-13 20:19:40,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:40,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2022-12-13 20:19:40,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,862 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 96 flow. Second operand 3 states and 365 transitions. [2022-12-13 20:19:40,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 152 flow [2022-12-13 20:19:40,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:40,863 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 92 flow [2022-12-13 20:19:40,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2022-12-13 20:19:40,864 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2022-12-13 20:19:40,864 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 92 flow [2022-12-13 20:19:40,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:40,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:40,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:40,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:19:40,865 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1177020233, now seen corresponding path program 1 times [2022-12-13 20:19:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:40,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848179844] [2022-12-13 20:19:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:40,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:41,024 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 20:19:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:41,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848179844] [2022-12-13 20:19:41,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848179844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:41,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:41,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116666282] [2022-12-13 20:19:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:41,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:19:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:19:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:19:41,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 243 [2022-12-13 20:19:41,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:41,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 243 [2022-12-13 20:19:41,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:41,322 INFO L130 PetriNetUnfolder]: 1924/3325 cut-off events. [2022-12-13 20:19:41,323 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6140 conditions, 3325 events. 1924/3325 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 23725 event pairs, 1924 based on Foata normal form. 0/2865 useless extension candidates. Maximal degree in co-relation 6136. Up to 2744 conditions per place. [2022-12-13 20:19:41,332 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 27 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-12-13 20:19:41,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 148 flow [2022-12-13 20:19:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2022-12-13 20:19:41,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42386831275720166 [2022-12-13 20:19:41,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2022-12-13 20:19:41,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2022-12-13 20:19:41,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:41,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2022-12-13 20:19:41,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,335 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 92 flow. Second operand 3 states and 309 transitions. [2022-12-13 20:19:41,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 148 flow [2022-12-13 20:19:41,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:41,336 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 90 flow [2022-12-13 20:19:41,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2022-12-13 20:19:41,336 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -21 predicate places. [2022-12-13 20:19:41,336 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 90 flow [2022-12-13 20:19:41,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:41,337 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:19:41,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1177020231, now seen corresponding path program 1 times [2022-12-13 20:19:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:41,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255531910] [2022-12-13 20:19:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:41,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:41,498 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 20:19:41,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:41,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255531910] [2022-12-13 20:19:41,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255531910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:41,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:41,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:41,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336869089] [2022-12-13 20:19:41,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:41,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 243 [2022-12-13 20:19:41,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:41,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 243 [2022-12-13 20:19:41,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:41,680 INFO L130 PetriNetUnfolder]: 1405/2446 cut-off events. [2022-12-13 20:19:41,680 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 20:19:41,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 2446 events. 1405/2446 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16811 event pairs, 1405 based on Foata normal form. 0/2205 useless extension candidates. Maximal degree in co-relation 4558. Up to 2045 conditions per place. [2022-12-13 20:19:41,688 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 26 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-12-13 20:19:41,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 38 transitions, 144 flow [2022-12-13 20:19:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2022-12-13 20:19:41,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49657064471879286 [2022-12-13 20:19:41,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2022-12-13 20:19:41,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2022-12-13 20:19:41,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:41,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2022-12-13 20:19:41,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,691 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 90 flow. Second operand 3 states and 362 transitions. [2022-12-13 20:19:41,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 38 transitions, 144 flow [2022-12-13 20:19:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:41,692 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 88 flow [2022-12-13 20:19:41,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2022-12-13 20:19:41,692 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -22 predicate places. [2022-12-13 20:19:41,692 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 88 flow [2022-12-13 20:19:41,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:41,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:41,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:19:41,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1140591290, now seen corresponding path program 1 times [2022-12-13 20:19:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:41,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804309649] [2022-12-13 20:19:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:41,732 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 20:19:41,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:41,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804309649] [2022-12-13 20:19:41,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804309649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:41,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:41,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:41,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869093475] [2022-12-13 20:19:41,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:41,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:41,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:41,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:41,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2022-12-13 20:19:41,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:41,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:41,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2022-12-13 20:19:41,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:42,476 INFO L130 PetriNetUnfolder]: 8497/13178 cut-off events. [2022-12-13 20:19:42,476 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-12-13 20:19:42,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25478 conditions, 13178 events. 8497/13178 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 88166 event pairs, 1753 based on Foata normal form. 360/13150 useless extension candidates. Maximal degree in co-relation 25474. Up to 6175 conditions per place. [2022-12-13 20:19:42,516 INFO L137 encePairwiseOnDemand]: 234/243 looper letters, 120 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2022-12-13 20:19:42,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 142 transitions, 600 flow [2022-12-13 20:19:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:19:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:19:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 891 transitions. [2022-12-13 20:19:42,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 20:19:42,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 891 transitions. [2022-12-13 20:19:42,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 891 transitions. [2022-12-13 20:19:42,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:42,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 891 transitions. [2022-12-13 20:19:42,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:42,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:42,524 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:42,524 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 88 flow. Second operand 7 states and 891 transitions. [2022-12-13 20:19:42,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 142 transitions, 600 flow [2022-12-13 20:19:42,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 142 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:42,527 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 192 flow [2022-12-13 20:19:42,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2022-12-13 20:19:42,527 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2022-12-13 20:19:42,527 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 192 flow [2022-12-13 20:19:42,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:42,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:42,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:42,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:19:42,528 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash -964461725, now seen corresponding path program 1 times [2022-12-13 20:19:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:42,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706585262] [2022-12-13 20:19:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:42,571 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 20:19:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:42,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706585262] [2022-12-13 20:19:42,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706585262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:42,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:42,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:19:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009450788] [2022-12-13 20:19:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:42,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:42,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 243 [2022-12-13 20:19:42,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:42,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:42,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 243 [2022-12-13 20:19:42,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:42,989 INFO L130 PetriNetUnfolder]: 3594/6267 cut-off events. [2022-12-13 20:19:42,989 INFO L131 PetriNetUnfolder]: For 1245/1329 co-relation queries the response was YES. [2022-12-13 20:19:42,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14106 conditions, 6267 events. 3594/6267 cut-off events. For 1245/1329 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 48476 event pairs, 1038 based on Foata normal form. 534/6125 useless extension candidates. Maximal degree in co-relation 14098. Up to 2386 conditions per place. [2022-12-13 20:19:43,009 INFO L137 encePairwiseOnDemand]: 237/243 looper letters, 40 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2022-12-13 20:19:43,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 325 flow [2022-12-13 20:19:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-13 20:19:43,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2022-12-13 20:19:43,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-12-13 20:19:43,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-12-13 20:19:43,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:43,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-12-13 20:19:43,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,012 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 192 flow. Second operand 3 states and 387 transitions. [2022-12-13 20:19:43,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 325 flow [2022-12-13 20:19:43,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:19:43,029 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 208 flow [2022-12-13 20:19:43,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-12-13 20:19:43,030 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2022-12-13 20:19:43,030 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 208 flow [2022-12-13 20:19:43,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:43,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:43,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:19:43,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash -770562185, now seen corresponding path program 2 times [2022-12-13 20:19:43,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:43,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410042842] [2022-12-13 20:19:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:43,079 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 20:19:43,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:43,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410042842] [2022-12-13 20:19:43,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410042842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:43,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:43,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:19:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504555036] [2022-12-13 20:19:43,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:19:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:19:43,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:19:43,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 243 [2022-12-13 20:19:43,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:43,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 243 [2022-12-13 20:19:43,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:43,601 INFO L130 PetriNetUnfolder]: 3383/6492 cut-off events. [2022-12-13 20:19:43,601 INFO L131 PetriNetUnfolder]: For 3675/3756 co-relation queries the response was YES. [2022-12-13 20:19:43,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16221 conditions, 6492 events. 3383/6492 cut-off events. For 3675/3756 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 55355 event pairs, 509 based on Foata normal form. 245/6106 useless extension candidates. Maximal degree in co-relation 16211. Up to 1572 conditions per place. [2022-12-13 20:19:43,624 INFO L137 encePairwiseOnDemand]: 234/243 looper letters, 71 selfloop transitions, 19 changer transitions 0/117 dead transitions. [2022-12-13 20:19:43,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 117 transitions, 579 flow [2022-12-13 20:19:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:19:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:19:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2022-12-13 20:19:43,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5366255144032922 [2022-12-13 20:19:43,626 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2022-12-13 20:19:43,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2022-12-13 20:19:43,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:43,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2022-12-13 20:19:43,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,628 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,628 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 208 flow. Second operand 5 states and 652 transitions. [2022-12-13 20:19:43,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 117 transitions, 579 flow [2022-12-13 20:19:43,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:43,648 INFO L231 Difference]: Finished difference. Result has 59 places, 71 transitions, 296 flow [2022-12-13 20:19:43,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=59, PETRI_TRANSITIONS=71} [2022-12-13 20:19:43,648 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2022-12-13 20:19:43,649 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 71 transitions, 296 flow [2022-12-13 20:19:43,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:43,649 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:43,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:19:43,649 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:43,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1775021337, now seen corresponding path program 1 times [2022-12-13 20:19:43,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:43,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938827031] [2022-12-13 20:19:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:43,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:43,694 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 20:19:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:43,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938827031] [2022-12-13 20:19:43,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938827031] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:43,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:43,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044783771] [2022-12-13 20:19:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:43,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2022-12-13 20:19:43,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:43,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:43,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2022-12-13 20:19:43,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:45,364 INFO L130 PetriNetUnfolder]: 13109/22306 cut-off events. [2022-12-13 20:19:45,364 INFO L131 PetriNetUnfolder]: For 14890/15659 co-relation queries the response was YES. [2022-12-13 20:19:45,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62419 conditions, 22306 events. 13109/22306 cut-off events. For 14890/15659 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 189742 event pairs, 3024 based on Foata normal form. 1431/22695 useless extension candidates. Maximal degree in co-relation 62409. Up to 10918 conditions per place. [2022-12-13 20:19:45,450 INFO L137 encePairwiseOnDemand]: 235/243 looper letters, 191 selfloop transitions, 47 changer transitions 0/244 dead transitions. [2022-12-13 20:19:45,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 244 transitions, 1498 flow [2022-12-13 20:19:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:19:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:19:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 884 transitions. [2022-12-13 20:19:45,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5196942974720753 [2022-12-13 20:19:45,452 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 884 transitions. [2022-12-13 20:19:45,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 884 transitions. [2022-12-13 20:19:45,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:45,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 884 transitions. [2022-12-13 20:19:45,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:45,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:45,456 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 243.0) internal successors, (1944), 8 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:45,456 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 296 flow. Second operand 7 states and 884 transitions. [2022-12-13 20:19:45,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 244 transitions, 1498 flow [2022-12-13 20:19:45,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 244 transitions, 1490 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 20:19:45,605 INFO L231 Difference]: Finished difference. Result has 69 places, 115 transitions, 680 flow [2022-12-13 20:19:45,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=69, PETRI_TRANSITIONS=115} [2022-12-13 20:19:45,605 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2022-12-13 20:19:45,605 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 115 transitions, 680 flow [2022-12-13 20:19:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:45,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:45,606 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:45,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:19:45,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:45,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash 889335941, now seen corresponding path program 1 times [2022-12-13 20:19:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:45,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466929389] [2022-12-13 20:19:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:45,689 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 20:19:45,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:45,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466929389] [2022-12-13 20:19:45,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466929389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:45,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:45,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513300833] [2022-12-13 20:19:45,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:45,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:45,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:45,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 243 [2022-12-13 20:19:45,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 115 transitions, 680 flow. Second operand has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:45,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:45,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 243 [2022-12-13 20:19:45,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:46,093 INFO L130 PetriNetUnfolder]: 1471/3416 cut-off events. [2022-12-13 20:19:46,093 INFO L131 PetriNetUnfolder]: For 2944/3446 co-relation queries the response was YES. [2022-12-13 20:19:46,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10252 conditions, 3416 events. 1471/3416 cut-off events. For 2944/3446 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 28006 event pairs, 141 based on Foata normal form. 265/3571 useless extension candidates. Maximal degree in co-relation 10237. Up to 697 conditions per place. [2022-12-13 20:19:46,103 INFO L137 encePairwiseOnDemand]: 234/243 looper letters, 78 selfloop transitions, 19 changer transitions 0/152 dead transitions. [2022-12-13 20:19:46,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 152 transitions, 918 flow [2022-12-13 20:19:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:19:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:19:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 769 transitions. [2022-12-13 20:19:46,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5274348422496571 [2022-12-13 20:19:46,105 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 769 transitions. [2022-12-13 20:19:46,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 769 transitions. [2022-12-13 20:19:46,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:46,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 769 transitions. [2022-12-13 20:19:46,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.16666666666666) internal successors, (769), 6 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,108 INFO L175 Difference]: Start difference. First operand has 69 places, 115 transitions, 680 flow. Second operand 6 states and 769 transitions. [2022-12-13 20:19:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 152 transitions, 918 flow [2022-12-13 20:19:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 152 transitions, 912 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 20:19:46,119 INFO L231 Difference]: Finished difference. Result has 75 places, 99 transitions, 604 flow [2022-12-13 20:19:46,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=75, PETRI_TRANSITIONS=99} [2022-12-13 20:19:46,119 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2022-12-13 20:19:46,120 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 99 transitions, 604 flow [2022-12-13 20:19:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:46,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:46,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 20:19:46,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:46,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:46,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1628456128, now seen corresponding path program 1 times [2022-12-13 20:19:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:46,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205524850] [2022-12-13 20:19:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:46,159 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 20:19:46,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205524850] [2022-12-13 20:19:46,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205524850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:46,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:46,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:46,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160639817] [2022-12-13 20:19:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:46,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:46,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2022-12-13 20:19:46,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 99 transitions, 604 flow. Second operand has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:46,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2022-12-13 20:19:46,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:46,640 INFO L130 PetriNetUnfolder]: 2295/4629 cut-off events. [2022-12-13 20:19:46,640 INFO L131 PetriNetUnfolder]: For 7180/7254 co-relation queries the response was YES. [2022-12-13 20:19:46,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16152 conditions, 4629 events. 2295/4629 cut-off events. For 7180/7254 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 34620 event pairs, 481 based on Foata normal form. 108/4684 useless extension candidates. Maximal degree in co-relation 16135. Up to 2195 conditions per place. [2022-12-13 20:19:46,656 INFO L137 encePairwiseOnDemand]: 234/243 looper letters, 134 selfloop transitions, 38 changer transitions 1/179 dead transitions. [2022-12-13 20:19:46,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 179 transitions, 1340 flow [2022-12-13 20:19:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:19:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:19:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2022-12-13 20:19:46,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5150891632373114 [2022-12-13 20:19:46,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2022-12-13 20:19:46,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2022-12-13 20:19:46,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:46,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2022-12-13 20:19:46,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,661 INFO L175 Difference]: Start difference. First operand has 75 places, 99 transitions, 604 flow. Second operand 6 states and 751 transitions. [2022-12-13 20:19:46,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 179 transitions, 1340 flow [2022-12-13 20:19:46,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 179 transitions, 1288 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:19:46,680 INFO L231 Difference]: Finished difference. Result has 80 places, 101 transitions, 705 flow [2022-12-13 20:19:46,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=705, PETRI_PLACES=80, PETRI_TRANSITIONS=101} [2022-12-13 20:19:46,681 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2022-12-13 20:19:46,681 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 101 transitions, 705 flow [2022-12-13 20:19:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:46,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:46,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:19:46,682 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1336975026, now seen corresponding path program 1 times [2022-12-13 20:19:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:46,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376645283] [2022-12-13 20:19:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:46,718 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 20:19:46,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:46,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376645283] [2022-12-13 20:19:46,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376645283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:46,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:46,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001532808] [2022-12-13 20:19:46,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:46,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:46,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2022-12-13 20:19:46,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 101 transitions, 705 flow. Second operand has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:46,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:46,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2022-12-13 20:19:46,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:47,211 INFO L130 PetriNetUnfolder]: 2196/4417 cut-off events. [2022-12-13 20:19:47,212 INFO L131 PetriNetUnfolder]: For 7883/8052 co-relation queries the response was YES. [2022-12-13 20:19:47,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15679 conditions, 4417 events. 2196/4417 cut-off events. For 7883/8052 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 32614 event pairs, 405 based on Foata normal form. 163/4539 useless extension candidates. Maximal degree in co-relation 15659. Up to 2110 conditions per place. [2022-12-13 20:19:47,227 INFO L137 encePairwiseOnDemand]: 235/243 looper letters, 141 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2022-12-13 20:19:47,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 187 transitions, 1428 flow [2022-12-13 20:19:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:19:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:19:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 756 transitions. [2022-12-13 20:19:47,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-12-13 20:19:47,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 756 transitions. [2022-12-13 20:19:47,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 756 transitions. [2022-12-13 20:19:47,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:47,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 756 transitions. [2022-12-13 20:19:47,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,231 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,231 INFO L175 Difference]: Start difference. First operand has 80 places, 101 transitions, 705 flow. Second operand 6 states and 756 transitions. [2022-12-13 20:19:47,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 187 transitions, 1428 flow [2022-12-13 20:19:47,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 187 transitions, 1372 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:19:47,249 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 778 flow [2022-12-13 20:19:47,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2022-12-13 20:19:47,250 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2022-12-13 20:19:47,250 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 778 flow [2022-12-13 20:19:47,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:47,250 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] [2022-12-13 20:19:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 20:19:47,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash 335308042, now seen corresponding path program 1 times [2022-12-13 20:19:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054313881] [2022-12-13 20:19:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:47,324 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 20:19:47,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:47,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054313881] [2022-12-13 20:19:47,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054313881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:47,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:47,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984664132] [2022-12-13 20:19:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:47,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 243 [2022-12-13 20:19:47,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:47,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 243 [2022-12-13 20:19:47,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:47,629 INFO L130 PetriNetUnfolder]: 963/2699 cut-off events. [2022-12-13 20:19:47,629 INFO L131 PetriNetUnfolder]: For 4649/5032 co-relation queries the response was YES. [2022-12-13 20:19:47,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 2699 events. 963/2699 cut-off events. For 4649/5032 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 23486 event pairs, 311 based on Foata normal form. 265/2861 useless extension candidates. Maximal degree in co-relation 9003. Up to 836 conditions per place. [2022-12-13 20:19:47,641 INFO L137 encePairwiseOnDemand]: 236/243 looper letters, 55 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2022-12-13 20:19:47,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 129 transitions, 954 flow [2022-12-13 20:19:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:19:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:19:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 645 transitions. [2022-12-13 20:19:47,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2022-12-13 20:19:47,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 645 transitions. [2022-12-13 20:19:47,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 645 transitions. [2022-12-13 20:19:47,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:47,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 645 transitions. [2022-12-13 20:19:47,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,645 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 778 flow. Second operand 5 states and 645 transitions. [2022-12-13 20:19:47,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 129 transitions, 954 flow [2022-12-13 20:19:47,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 905 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:19:47,673 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 743 flow [2022-12-13 20:19:47,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2022-12-13 20:19:47,673 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2022-12-13 20:19:47,674 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 743 flow [2022-12-13 20:19:47,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:47,674 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] [2022-12-13 20:19:47,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 20:19:47,675 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:47,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash 574937620, now seen corresponding path program 2 times [2022-12-13 20:19:47,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:47,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727639489] [2022-12-13 20:19:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:47,768 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 20:19:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:47,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727639489] [2022-12-13 20:19:47,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727639489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:47,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:47,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:19:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113512152] [2022-12-13 20:19:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:19:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:19:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:19:47,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 243 [2022-12-13 20:19:47,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:47,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:47,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 243 [2022-12-13 20:19:47,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:48,076 INFO L130 PetriNetUnfolder]: 567/1868 cut-off events. [2022-12-13 20:19:48,076 INFO L131 PetriNetUnfolder]: For 4869/5155 co-relation queries the response was YES. [2022-12-13 20:19:48,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6685 conditions, 1868 events. 567/1868 cut-off events. For 4869/5155 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15593 event pairs, 138 based on Foata normal form. 184/2034 useless extension candidates. Maximal degree in co-relation 6662. Up to 413 conditions per place. [2022-12-13 20:19:48,085 INFO L137 encePairwiseOnDemand]: 236/243 looper letters, 55 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2022-12-13 20:19:48,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 109 transitions, 758 flow [2022-12-13 20:19:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:19:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:19:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 645 transitions. [2022-12-13 20:19:48,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2022-12-13 20:19:48,088 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 645 transitions. [2022-12-13 20:19:48,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 645 transitions. [2022-12-13 20:19:48,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:48,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 645 transitions. [2022-12-13 20:19:48,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:48,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:48,091 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:48,092 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 743 flow. Second operand 5 states and 645 transitions. [2022-12-13 20:19:48,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 109 transitions, 758 flow [2022-12-13 20:19:48,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 667 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-12-13 20:19:48,106 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 476 flow [2022-12-13 20:19:48,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2022-12-13 20:19:48,107 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2022-12-13 20:19:48,107 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 476 flow [2022-12-13 20:19:48,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:48,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:19:48,108 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:48,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 20:19:48,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-12-13 20:19:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:19:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1367353838, now seen corresponding path program 1 times [2022-12-13 20:19:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:19:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822123424] [2022-12-13 20:19:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:19:48,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:19:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:19:48,973 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 20:19:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:48,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822123424] [2022-12-13 20:19:48,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822123424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:19:48,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:19:48,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:19:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446318265] [2022-12-13 20:19:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:19:48,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:19:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:19:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:19:49,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 243 [2022-12-13 20:19:49,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:49,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:19:49,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 243 [2022-12-13 20:19:49,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:19:49,231 INFO L130 PetriNetUnfolder]: 582/1639 cut-off events. [2022-12-13 20:19:49,232 INFO L131 PetriNetUnfolder]: For 3751/3903 co-relation queries the response was YES. [2022-12-13 20:19:49,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5655 conditions, 1639 events. 582/1639 cut-off events. For 3751/3903 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12824 event pairs, 417 based on Foata normal form. 25/1588 useless extension candidates. Maximal degree in co-relation 5640. Up to 1153 conditions per place. [2022-12-13 20:19:49,237 INFO L137 encePairwiseOnDemand]: 241/243 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2022-12-13 20:19:49,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 550 flow [2022-12-13 20:19:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:19:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:19:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2022-12-13 20:19:49,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47050754458161864 [2022-12-13 20:19:49,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2022-12-13 20:19:49,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2022-12-13 20:19:49,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:19:49,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2022-12-13 20:19:49,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:49,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:49,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:49,240 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 476 flow. Second operand 3 states and 343 transitions. [2022-12-13 20:19:49,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 550 flow [2022-12-13 20:19:49,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 531 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:19:49,245 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2022-12-13 20:19:49,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2022-12-13 20:19:49,246 INFO L288 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2022-12-13 20:19:49,246 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2022-12-13 20:19:49,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:19:49,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2022-12-13 20:19:49,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2022-12-13 20:19:49,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2022-12-13 20:19:49,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2022-12-13 20:19:49,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2022-12-13 20:19:49,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 24 remaining) [2022-12-13 20:19:49,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2022-12-13 20:19:49,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2022-12-13 20:19:49,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2022-12-13 20:19:49,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2022-12-13 20:19:49,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2022-12-13 20:19:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 20:19:49,250 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:19:49,254 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:19:49,254 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:19:49,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:19:49 BasicIcfg [2022-12-13 20:19:49,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:19:49,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:19:49,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:19:49,257 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:19:49,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:19:33" (3/4) ... [2022-12-13 20:19:49,260 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:19:49,263 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-12-13 20:19:49,264 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-12-13 20:19:49,266 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 20:19:49,267 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 20:19:49,267 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 20:19:49,267 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:19:49,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:19:49,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:19:49,289 INFO L158 Benchmark]: Toolchain (without parser) took 16450.00ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 89.1MB in the beginning and 391.9MB in the end (delta: -302.8MB). Peak memory consumption was 719.3MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,289 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:19:49,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.83ms. Allocated memory is still 130.0MB. Free memory was 89.1MB in the beginning and 68.0MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.07ms. Allocated memory is still 130.0MB. Free memory was 68.0MB in the beginning and 65.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,290 INFO L158 Benchmark]: Boogie Preprocessor took 24.40ms. Allocated memory is still 130.0MB. Free memory was 65.6MB in the beginning and 64.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,290 INFO L158 Benchmark]: RCFGBuilder took 446.29ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 64.4MB in the beginning and 116.7MB in the end (delta: -52.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,290 INFO L158 Benchmark]: TraceAbstraction took 15472.80ms. Allocated memory was 157.3MB in the beginning and 1.2GB in the end (delta: 994.1MB). Free memory was 115.7MB in the beginning and 395.0MB in the end (delta: -279.3MB). Peak memory consumption was 715.6MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,291 INFO L158 Benchmark]: Witness Printer took 31.75ms. Allocated memory is still 1.2GB. Free memory was 395.0MB in the beginning and 391.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:19:49,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.83ms. Allocated memory is still 130.0MB. Free memory was 89.1MB in the beginning and 68.0MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.07ms. Allocated memory is still 130.0MB. Free memory was 68.0MB in the beginning and 65.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.40ms. Allocated memory is still 130.0MB. Free memory was 65.6MB in the beginning and 64.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.29ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 64.4MB in the beginning and 116.7MB in the end (delta: -52.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 15472.80ms. Allocated memory was 157.3MB in the beginning and 1.2GB in the end (delta: 994.1MB). Free memory was 115.7MB in the beginning and 395.0MB in the end (delta: -279.3MB). Peak memory consumption was 715.6MB. Max. memory is 16.1GB. * Witness Printer took 31.75ms. Allocated memory is still 1.2GB. Free memory was 395.0MB in the beginning and 391.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 134 PlacesBefore, 68 PlacesAfterwards, 123 TransitionsBefore, 57 TransitionsAfterwards, 3048 CoEnabledTransitionPairs, 5 FixpointIterations, 43 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 111 TotalNumberOfCompositions, 10235 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5145, independent: 4935, independent conditional: 0, independent unconditional: 4935, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1652, independent: 1620, independent conditional: 0, independent unconditional: 1620, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5145, independent: 3315, independent conditional: 0, independent unconditional: 3315, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 1652, unknown conditional: 0, unknown unconditional: 1652] , Statistics on independence cache: Total cache size (in pairs): 328, Positive cache size: 306, Positive conditional cache size: 0, Positive unconditional cache size: 306, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 739]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 743]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1753 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1174 mSDsluCounter, 217 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2696 IncrementalHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 154 mSDtfsCounter, 2696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=778occurred in iteration=16, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 20:19:49,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961421ab-0530-480c-9e2d-fc7859ba0e65/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE