./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/reorder_5.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_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/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_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/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_aa31bf9b-8416-48de-a413-44f43c97e9c8/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 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 --- 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 21:43:58,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:43:58,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:43:58,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:43:58,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:43:58,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:43:58,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:43:58,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:43:58,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:43:58,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:43:58,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:43:58,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:43:58,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:43:58,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:43:58,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:43:58,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:43:58,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:43:58,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:43:58,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:43:58,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:43:58,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:43:58,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:43:58,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:43:58,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:43:58,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:43:58,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:43:58,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:43:58,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:43:58,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:43:58,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:43:58,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:43:58,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:43:58,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:43:58,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:43:58,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:43:58,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:43:58,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:43:58,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:43:58,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:43:58,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:43:58,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:43:58,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:43:58,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:43:58,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:43:58,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:43:58,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:43:58,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:43:58,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:43:58,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:43:58,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:43:58,086 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:43:58,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:43:58,086 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:43:58,086 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:43:58,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:43:58,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:43:58,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:43:58,087 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:43:58,087 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:43:58,088 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:43:58,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:43:58,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:43:58,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:43:58,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:43:58,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:43:58,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:43:58,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:43:58,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:43:58,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:43:58,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:43:58,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:43:58,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:43:58,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:43:58,090 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:43:58,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:43:58,090 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:43:58,091 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 [2022-12-13 21:43:58,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:43:58,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:43:58,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:43:58,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:43:58,279 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:43:58,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/reorder_5.i [2022-12-13 21:44:00,801 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:44:01,019 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:44:01,020 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/sv-benchmarks/c/pthread/reorder_5.i [2022-12-13 21:44:01,034 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data/048bdf01e/9a1c2d84bdb14ba2ae984fcca66bc956/FLAG12ecc4586 [2022-12-13 21:44:01,367 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data/048bdf01e/9a1c2d84bdb14ba2ae984fcca66bc956 [2022-12-13 21:44:01,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:44:01,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:44:01,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:44:01,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:44:01,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:44:01,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:01,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11246fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01, skipping insertion in model container [2022-12-13 21:44:01,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:01,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:44:01,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:44:01,804 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,813 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,816 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,818 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,820 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,823 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,823 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-13 21:44:01,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:44:01,833 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:44:01,874 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,878 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,879 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,881 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,882 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,885 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:44:01,885 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-13 21:44:01,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:44:01,956 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:44:01,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01 WrapperNode [2022-12-13 21:44:01,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:44:01,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:44:01,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:44:01,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:44:01,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:01,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:01,992 INFO L138 Inliner]: procedures = 369, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2022-12-13 21:44:01,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:44:01,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:44:01,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:44:01,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:44:02,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:44:02,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:44:02,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:44:02,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:44:02,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (1/1) ... [2022-12-13 21:44:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:44:02,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:02,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:44:02,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:44:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:44:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:44:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:44:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-13 21:44:02,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-13 21:44:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:44:02,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:44:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-13 21:44:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-13 21:44:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:44:02,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:44:02,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:44:02,069 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 21:44:02,175 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:44:02,178 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:44:02,446 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:44:02,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:44:02,455 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:44:02,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:02 BoogieIcfgContainer [2022-12-13 21:44:02,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:44:02,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:44:02,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:44:02,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:44:02,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:44:01" (1/3) ... [2022-12-13 21:44:02,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e77de75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:44:02, skipping insertion in model container [2022-12-13 21:44:02,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:01" (2/3) ... [2022-12-13 21:44:02,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e77de75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:44:02, skipping insertion in model container [2022-12-13 21:44:02,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:02" (3/3) ... [2022-12-13 21:44:02,467 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-12-13 21:44:02,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:44:02,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-13 21:44:02,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:44:02,532 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 21:44:02,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 205 transitions, 432 flow [2022-12-13 21:44:02,647 INFO L130 PetriNetUnfolder]: 37/430 cut-off events. [2022-12-13 21:44:02,647 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 21:44:02,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 430 events. 37/430 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1713 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-12-13 21:44:02,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 205 transitions, 432 flow [2022-12-13 21:44:02,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 205 transitions, 432 flow [2022-12-13 21:44:02,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:44:02,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 205 transitions, 432 flow [2022-12-13 21:44:02,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 205 transitions, 432 flow [2022-12-13 21:44:02,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 205 transitions, 432 flow [2022-12-13 21:44:02,706 INFO L130 PetriNetUnfolder]: 37/430 cut-off events. [2022-12-13 21:44:02,706 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 21:44:02,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 430 events. 37/430 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1713 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-12-13 21:44:02,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 2694 [2022-12-13 21:44:12,690 INFO L134 LiptonReduction]: Checked pairs total: 5004 [2022-12-13 21:44:12,690 INFO L136 LiptonReduction]: Total number of compositions: 236 [2022-12-13 21:44:12,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:44:12,711 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;@1e40a8dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:44:12,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 21:44:12,713 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:44:12,713 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:44:12,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:12,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:44:12,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash 750, now seen corresponding path program 1 times [2022-12-13 21:44:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:12,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224593165] [2022-12-13 21:44:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:12,798 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 21:44:12,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:12,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224593165] [2022-12-13 21:44:12,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224593165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:12,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:12,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:44:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607433329] [2022-12-13 21:44:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:12,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:44:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:44:12,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:44:12,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 441 [2022-12-13 21:44:12,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:12,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:12,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 441 [2022-12-13 21:44:12,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:12,952 INFO L130 PetriNetUnfolder]: 262/592 cut-off events. [2022-12-13 21:44:12,952 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 21:44:12,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 592 events. 262/592 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3115 event pairs, 246 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 886. Up to 532 conditions per place. [2022-12-13 21:44:12,957 INFO L137 encePairwiseOnDemand]: 429/441 looper letters, 32 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2022-12-13 21:44:12,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 174 flow [2022-12-13 21:44:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:44:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:44:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 418 transitions. [2022-12-13 21:44:12,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2022-12-13 21:44:12,972 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 418 transitions. [2022-12-13 21:44:12,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 418 transitions. [2022-12-13 21:44:12,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:12,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 418 transitions. [2022-12-13 21:44:12,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:12,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:12,983 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:12,984 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 134 flow. Second operand 2 states and 418 transitions. [2022-12-13 21:44:12,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 174 flow [2022-12-13 21:44:12,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:44:12,988 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 110 flow [2022-12-13 21:44:12,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2022-12-13 21:44:12,992 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2022-12-13 21:44:12,992 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 110 flow [2022-12-13 21:44:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:12,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:12,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:44:12,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 23854, now seen corresponding path program 1 times [2022-12-13 21:44:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:12,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783163972] [2022-12-13 21:44:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:13,196 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 21:44:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:13,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783163972] [2022-12-13 21:44:13,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783163972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:13,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:13,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018893764] [2022-12-13 21:44:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:13,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:13,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 441 [2022-12-13 21:44:13,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:13,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 441 [2022-12-13 21:44:13,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:13,385 INFO L130 PetriNetUnfolder]: 262/584 cut-off events. [2022-12-13 21:44:13,386 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 21:44:13,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 584 events. 262/584 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3058 event pairs, 214 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 1146. Up to 467 conditions per place. [2022-12-13 21:44:13,388 INFO L137 encePairwiseOnDemand]: 436/441 looper letters, 33 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2022-12-13 21:44:13,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 186 flow [2022-12-13 21:44:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2022-12-13 21:44:13,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2022-12-13 21:44:13,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2022-12-13 21:44:13,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2022-12-13 21:44:13,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:13,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2022-12-13 21:44:13,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,395 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 110 flow. Second operand 3 states and 560 transitions. [2022-12-13 21:44:13,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 186 flow [2022-12-13 21:44:13,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:44:13,396 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 112 flow [2022-12-13 21:44:13,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2022-12-13 21:44:13,397 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2022-12-13 21:44:13,397 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 112 flow [2022-12-13 21:44:13,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:13,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:44:13,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash 23855, now seen corresponding path program 1 times [2022-12-13 21:44:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075450179] [2022-12-13 21:44:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:13,539 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 21:44:13,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:13,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075450179] [2022-12-13 21:44:13,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075450179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:13,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:13,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909787426] [2022-12-13 21:44:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:13,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:13,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 441 [2022-12-13 21:44:13,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:13,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 441 [2022-12-13 21:44:13,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:13,717 INFO L130 PetriNetUnfolder]: 262/576 cut-off events. [2022-12-13 21:44:13,717 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 21:44:13,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 576 events. 262/576 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2939 event pairs, 246 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 1171. Up to 531 conditions per place. [2022-12-13 21:44:13,720 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 31 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 21:44:13,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 172 flow [2022-12-13 21:44:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2022-12-13 21:44:13,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43159486016628873 [2022-12-13 21:44:13,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2022-12-13 21:44:13,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2022-12-13 21:44:13,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:13,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2022-12-13 21:44:13,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,729 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 112 flow. Second operand 3 states and 571 transitions. [2022-12-13 21:44:13,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 172 flow [2022-12-13 21:44:13,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:13,731 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 104 flow [2022-12-13 21:44:13,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-12-13 21:44:13,732 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -13 predicate places. [2022-12-13 21:44:13,732 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 104 flow [2022-12-13 21:44:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:13,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:13,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:44:13,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 24218, now seen corresponding path program 1 times [2022-12-13 21:44:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113755928] [2022-12-13 21:44:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:13,779 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 21:44:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:13,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113755928] [2022-12-13 21:44:13,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113755928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:13,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:13,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587116305] [2022-12-13 21:44:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:13,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:13,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 441 [2022-12-13 21:44:13,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:13,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 441 [2022-12-13 21:44:13,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:13,947 INFO L130 PetriNetUnfolder]: 244/538 cut-off events. [2022-12-13 21:44:13,947 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 21:44:13,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 538 events. 244/538 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2765 event pairs, 196 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 1063. Up to 429 conditions per place. [2022-12-13 21:44:13,948 INFO L137 encePairwiseOnDemand]: 436/441 looper letters, 31 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-12-13 21:44:13,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 176 flow [2022-12-13 21:44:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2022-12-13 21:44:13,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4308390022675737 [2022-12-13 21:44:13,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2022-12-13 21:44:13,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2022-12-13 21:44:13,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:13,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2022-12-13 21:44:13,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,954 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 104 flow. Second operand 3 states and 570 transitions. [2022-12-13 21:44:13,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 176 flow [2022-12-13 21:44:13,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:13,955 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 105 flow [2022-12-13 21:44:13,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-12-13 21:44:13,955 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -14 predicate places. [2022-12-13 21:44:13,956 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 105 flow [2022-12-13 21:44:13,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:13,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:13,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:44:13,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 24219, now seen corresponding path program 1 times [2022-12-13 21:44:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774989859] [2022-12-13 21:44:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:13,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774989859] [2022-12-13 21:44:14,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774989859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:14,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:14,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881002670] [2022-12-13 21:44:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:14,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 441 [2022-12-13 21:44:14,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:14,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 441 [2022-12-13 21:44:14,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:14,283 INFO L130 PetriNetUnfolder]: 245/575 cut-off events. [2022-12-13 21:44:14,283 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 21:44:14,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 575 events. 245/575 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3134 event pairs, 228 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 1150. Up to 490 conditions per place. [2022-12-13 21:44:14,285 INFO L137 encePairwiseOnDemand]: 434/441 looper letters, 36 selfloop transitions, 4 changer transitions 3/51 dead transitions. [2022-12-13 21:44:14,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 221 flow [2022-12-13 21:44:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-12-13 21:44:14,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42630385487528344 [2022-12-13 21:44:14,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-12-13 21:44:14,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-12-13 21:44:14,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:14,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-12-13 21:44:14,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,290 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 105 flow. Second operand 3 states and 564 transitions. [2022-12-13 21:44:14,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 221 flow [2022-12-13 21:44:14,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:14,292 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 129 flow [2022-12-13 21:44:14,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2022-12-13 21:44:14,292 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -13 predicate places. [2022-12-13 21:44:14,292 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 129 flow [2022-12-13 21:44:14,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:14,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:44:14,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:14,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 750718, now seen corresponding path program 1 times [2022-12-13 21:44:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:14,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845593342] [2022-12-13 21:44:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:14,350 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 21:44:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:14,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845593342] [2022-12-13 21:44:14,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845593342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:14,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:14,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864908176] [2022-12-13 21:44:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:14,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:14,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 441 [2022-12-13 21:44:14,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:14,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 441 [2022-12-13 21:44:14,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:14,503 INFO L130 PetriNetUnfolder]: 244/540 cut-off events. [2022-12-13 21:44:14,503 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-12-13 21:44:14,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 540 events. 244/540 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2780 event pairs, 196 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 1155. Up to 433 conditions per place. [2022-12-13 21:44:14,504 INFO L137 encePairwiseOnDemand]: 436/441 looper letters, 33 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2022-12-13 21:44:14,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 207 flow [2022-12-13 21:44:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2022-12-13 21:44:14,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2022-12-13 21:44:14,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2022-12-13 21:44:14,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2022-12-13 21:44:14,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:14,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2022-12-13 21:44:14,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,511 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 129 flow. Second operand 3 states and 558 transitions. [2022-12-13 21:44:14,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 207 flow [2022-12-13 21:44:14,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:14,512 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 129 flow [2022-12-13 21:44:14,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2022-12-13 21:44:14,513 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -14 predicate places. [2022-12-13 21:44:14,513 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 129 flow [2022-12-13 21:44:14,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:14,514 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:14,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:44:14,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:14,514 INFO L85 PathProgramCache]: Analyzing trace with hash 750719, now seen corresponding path program 1 times [2022-12-13 21:44:14,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:14,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810731429] [2022-12-13 21:44:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:14,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:14,608 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 21:44:14,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:14,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810731429] [2022-12-13 21:44:14,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810731429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:14,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:14,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622143817] [2022-12-13 21:44:14,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:14,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 441 [2022-12-13 21:44:14,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:14,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 441 [2022-12-13 21:44:14,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:14,776 INFO L130 PetriNetUnfolder]: 244/526 cut-off events. [2022-12-13 21:44:14,776 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-12-13 21:44:14,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 526 events. 244/526 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2627 event pairs, 228 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 1172. Up to 498 conditions per place. [2022-12-13 21:44:14,778 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 32 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2022-12-13 21:44:14,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 191 flow [2022-12-13 21:44:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2022-12-13 21:44:14,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4323507180650038 [2022-12-13 21:44:14,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2022-12-13 21:44:14,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2022-12-13 21:44:14,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:14,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2022-12-13 21:44:14,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 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 21:44:14,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,785 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 129 flow. Second operand 3 states and 572 transitions. [2022-12-13 21:44:14,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 191 flow [2022-12-13 21:44:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:14,787 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 119 flow [2022-12-13 21:44:14,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-12-13 21:44:14,787 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -16 predicate places. [2022-12-13 21:44:14,787 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 119 flow [2022-12-13 21:44:14,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:14,788 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:44:14,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash 750998, now seen corresponding path program 1 times [2022-12-13 21:44:14,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:14,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137457825] [2022-12-13 21:44:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:14,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:14,828 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 21:44:14,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:14,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137457825] [2022-12-13 21:44:14,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137457825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:14,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:14,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:14,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51410280] [2022-12-13 21:44:14,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:14,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:14,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:14,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:14,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 441 [2022-12-13 21:44:14,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:14,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 441 [2022-12-13 21:44:14,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:14,977 INFO L130 PetriNetUnfolder]: 212/461 cut-off events. [2022-12-13 21:44:14,977 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-12-13 21:44:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 461 events. 212/461 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2227 event pairs, 164 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 1009. Up to 368 conditions per place. [2022-12-13 21:44:14,979 INFO L137 encePairwiseOnDemand]: 436/441 looper letters, 31 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2022-12-13 21:44:14,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 193 flow [2022-12-13 21:44:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2022-12-13 21:44:14,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4293272864701436 [2022-12-13 21:44:14,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2022-12-13 21:44:14,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2022-12-13 21:44:14,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:14,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2022-12-13 21:44:14,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,986 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 119 flow. Second operand 3 states and 568 transitions. [2022-12-13 21:44:14,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 193 flow [2022-12-13 21:44:14,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:14,987 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 122 flow [2022-12-13 21:44:14,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-12-13 21:44:14,988 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -17 predicate places. [2022-12-13 21:44:14,988 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 122 flow [2022-12-13 21:44:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:14,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:14,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:44:14,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 750997, now seen corresponding path program 1 times [2022-12-13 21:44:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:14,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714486846] [2022-12-13 21:44:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:15,094 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 21:44:15,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:15,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714486846] [2022-12-13 21:44:15,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714486846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:15,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:15,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:44:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340670296] [2022-12-13 21:44:15,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:15,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:44:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:44:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:44:15,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 441 [2022-12-13 21:44:15,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:15,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:15,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 441 [2022-12-13 21:44:15,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:15,333 INFO L130 PetriNetUnfolder]: 212/459 cut-off events. [2022-12-13 21:44:15,333 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-13 21:44:15,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 459 events. 212/459 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2177 event pairs, 196 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 1039. Up to 426 conditions per place. [2022-12-13 21:44:15,335 INFO L137 encePairwiseOnDemand]: 435/441 looper letters, 30 selfloop transitions, 4 changer transitions 2/40 dead transitions. [2022-12-13 21:44:15,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 204 flow [2022-12-13 21:44:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2022-12-13 21:44:15,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41194255479969766 [2022-12-13 21:44:15,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2022-12-13 21:44:15,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2022-12-13 21:44:15,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:15,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2022-12-13 21:44:15,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:15,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:15,338 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 122 flow. Second operand 3 states and 545 transitions. [2022-12-13 21:44:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 204 flow [2022-12-13 21:44:15,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:15,340 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 130 flow [2022-12-13 21:44:15,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-12-13 21:44:15,341 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -16 predicate places. [2022-12-13 21:44:15,341 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 130 flow [2022-12-13 21:44:15,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:15,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:15,342 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:44:15,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:44:15,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash 722029502, now seen corresponding path program 1 times [2022-12-13 21:44:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:15,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317105020] [2022-12-13 21:44:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:15,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:15,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317105020] [2022-12-13 21:44:15,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317105020] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:15,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104666239] [2022-12-13 21:44:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:15,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:15,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:15,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:15,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:44:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 21:44:15,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:15,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:15,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-13 21:44:15,736 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 21:44:15,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 21:44:15,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-13 21:44:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:15,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:15,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104666239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:15,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:15,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 21:44:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772810515] [2022-12-13 21:44:15,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:15,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:44:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:44:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:44:16,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 441 [2022-12-13 21:44:16,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 130 flow. Second operand has 11 states, 11 states have (on average 165.36363636363637) internal successors, (1819), 11 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:16,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:16,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 441 [2022-12-13 21:44:16,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:17,167 INFO L130 PetriNetUnfolder]: 227/499 cut-off events. [2022-12-13 21:44:17,167 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 21:44:17,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 499 events. 227/499 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2380 event pairs, 90 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 1135. Up to 340 conditions per place. [2022-12-13 21:44:17,170 INFO L137 encePairwiseOnDemand]: 427/441 looper letters, 43 selfloop transitions, 15 changer transitions 6/68 dead transitions. [2022-12-13 21:44:17,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 347 flow [2022-12-13 21:44:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:44:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:44:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1051 transitions. [2022-12-13 21:44:17,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39720332577475437 [2022-12-13 21:44:17,172 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1051 transitions. [2022-12-13 21:44:17,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1051 transitions. [2022-12-13 21:44:17,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:17,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1051 transitions. [2022-12-13 21:44:17,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,180 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,180 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 130 flow. Second operand 6 states and 1051 transitions. [2022-12-13 21:44:17,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 347 flow [2022-12-13 21:44:17,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:17,183 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 226 flow [2022-12-13 21:44:17,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2022-12-13 21:44:17,184 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2022-12-13 21:44:17,184 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 226 flow [2022-12-13 21:44:17,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 165.36363636363637) internal successors, (1819), 11 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:17,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:44:17,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:44:17,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:44:17,387 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:17,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash 721725906, now seen corresponding path program 1 times [2022-12-13 21:44:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:17,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190250002] [2022-12-13 21:44:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:17,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:17,501 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 21:44:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:17,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190250002] [2022-12-13 21:44:17,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190250002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:17,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:17,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562720489] [2022-12-13 21:44:17,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:17,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 441 [2022-12-13 21:44:17,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:17,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 441 [2022-12-13 21:44:17,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:17,632 INFO L130 PetriNetUnfolder]: 202/471 cut-off events. [2022-12-13 21:44:17,632 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 21:44:17,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 471 events. 202/471 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2377 event pairs, 44 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 1329. Up to 341 conditions per place. [2022-12-13 21:44:17,634 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 60 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 21:44:17,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 471 flow [2022-12-13 21:44:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2022-12-13 21:44:17,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45351473922902497 [2022-12-13 21:44:17,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2022-12-13 21:44:17,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2022-12-13 21:44:17,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:17,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2022-12-13 21:44:17,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,640 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 226 flow. Second operand 3 states and 600 transitions. [2022-12-13 21:44:17,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 471 flow [2022-12-13 21:44:17,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 459 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:17,644 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 226 flow [2022-12-13 21:44:17,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2022-12-13 21:44:17,645 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2022-12-13 21:44:17,645 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 226 flow [2022-12-13 21:44:17,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:17,645 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:44:17,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:44:17,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash 721702864, now seen corresponding path program 1 times [2022-12-13 21:44:17,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:17,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617885634] [2022-12-13 21:44:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:17,770 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 21:44:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617885634] [2022-12-13 21:44:17,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617885634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:17,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:17,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486892503] [2022-12-13 21:44:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:17,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:17,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:17,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 441 [2022-12-13 21:44:17,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 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 21:44:17,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:17,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 441 [2022-12-13 21:44:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:17,934 INFO L130 PetriNetUnfolder]: 181/441 cut-off events. [2022-12-13 21:44:17,934 INFO L131 PetriNetUnfolder]: For 347/347 co-relation queries the response was YES. [2022-12-13 21:44:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 441 events. 181/441 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2087 event pairs, 158 based on Foata normal form. 24/465 useless extension candidates. Maximal degree in co-relation 1322. Up to 380 conditions per place. [2022-12-13 21:44:17,937 INFO L137 encePairwiseOnDemand]: 438/441 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2022-12-13 21:44:17,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 289 flow [2022-12-13 21:44:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2022-12-13 21:44:17,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2022-12-13 21:44:17,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2022-12-13 21:44:17,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2022-12-13 21:44:17,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:17,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2022-12-13 21:44:17,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:17,943 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 226 flow. Second operand 3 states and 574 transitions. [2022-12-13 21:44:17,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 289 flow [2022-12-13 21:44:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:17,946 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 198 flow [2022-12-13 21:44:17,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=198, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2022-12-13 21:44:17,946 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2022-12-13 21:44:17,946 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 198 flow [2022-12-13 21:44:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 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 21:44:17,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:17,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:44:17,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:44:17,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 898668085, now seen corresponding path program 1 times [2022-12-13 21:44:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:17,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941712700] [2022-12-13 21:44:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:17,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941712700] [2022-12-13 21:44:18,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941712700] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025083189] [2022-12-13 21:44:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:18,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:18,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:18,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:44:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:18,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 21:44:18,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:18,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:18,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-13 21:44:18,335 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 21:44:18,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 21:44:18,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-13 21:44:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:18,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:44:18,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025083189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:18,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:44:18,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-13 21:44:18,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304493787] [2022-12-13 21:44:18,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:18,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:44:18,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:44:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:44:18,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 441 [2022-12-13 21:44:18,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:18,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:18,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 441 [2022-12-13 21:44:18,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:19,010 INFO L130 PetriNetUnfolder]: 179/438 cut-off events. [2022-12-13 21:44:19,010 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-12-13 21:44:19,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 438 events. 179/438 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2011 event pairs, 168 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 1291. Up to 371 conditions per place. [2022-12-13 21:44:19,013 INFO L137 encePairwiseOnDemand]: 429/441 looper letters, 39 selfloop transitions, 7 changer transitions 12/62 dead transitions. [2022-12-13 21:44:19,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 421 flow [2022-12-13 21:44:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:44:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:44:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1052 transitions. [2022-12-13 21:44:19,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3975812547241119 [2022-12-13 21:44:19,016 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1052 transitions. [2022-12-13 21:44:19,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1052 transitions. [2022-12-13 21:44:19,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:19,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1052 transitions. [2022-12-13 21:44:19,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:19,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:19,023 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:19,023 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 198 flow. Second operand 6 states and 1052 transitions. [2022-12-13 21:44:19,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 421 flow [2022-12-13 21:44:19,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:19,027 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 257 flow [2022-12-13 21:44:19,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2022-12-13 21:44:19,028 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2022-12-13 21:44:19,028 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 257 flow [2022-12-13 21:44:19,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:19,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:19,029 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 21:44:19,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:44:19,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:19,230 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:44:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 908078600, now seen corresponding path program 1 times [2022-12-13 21:44:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:19,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58113967] [2022-12-13 21:44:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:44:19,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:44:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:44:19,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:44:19,352 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:44:19,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-12-13 21:44:19,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (31 of 33 remaining) [2022-12-13 21:44:19,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 33 remaining) [2022-12-13 21:44:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 33 remaining) [2022-12-13 21:44:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 33 remaining) [2022-12-13 21:44:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 33 remaining) [2022-12-13 21:44:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 33 remaining) [2022-12-13 21:44:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 33 remaining) [2022-12-13 21:44:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 33 remaining) [2022-12-13 21:44:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 33 remaining) [2022-12-13 21:44:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 33 remaining) [2022-12-13 21:44:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 33 remaining) [2022-12-13 21:44:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 33 remaining) [2022-12-13 21:44:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 33 remaining) [2022-12-13 21:44:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 33 remaining) [2022-12-13 21:44:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 33 remaining) [2022-12-13 21:44:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 33 remaining) [2022-12-13 21:44:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 33 remaining) [2022-12-13 21:44:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 33 remaining) [2022-12-13 21:44:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 33 remaining) [2022-12-13 21:44:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 33 remaining) [2022-12-13 21:44:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 33 remaining) [2022-12-13 21:44:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 33 remaining) [2022-12-13 21:44:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 33 remaining) [2022-12-13 21:44:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 33 remaining) [2022-12-13 21:44:19,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 33 remaining) [2022-12-13 21:44:19,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 33 remaining) [2022-12-13 21:44:19,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 33 remaining) [2022-12-13 21:44:19,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 33 remaining) [2022-12-13 21:44:19,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 33 remaining) [2022-12-13 21:44:19,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (2 of 33 remaining) [2022-12-13 21:44:19,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 33 remaining) [2022-12-13 21:44:19,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 33 remaining) [2022-12-13 21:44:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:44:19,364 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:19,368 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 21:44:19,368 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 21:44:19,389 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 21:44:19,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 225 transitions, 498 flow [2022-12-13 21:44:19,508 INFO L130 PetriNetUnfolder]: 149/1325 cut-off events. [2022-12-13 21:44:19,508 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 21:44:19,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 1325 events. 149/1325 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7652 event pairs, 1 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 773. Up to 32 conditions per place. [2022-12-13 21:44:19,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 225 transitions, 498 flow [2022-12-13 21:44:19,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 225 transitions, 498 flow [2022-12-13 21:44:19,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:44:19,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 225 transitions, 498 flow [2022-12-13 21:44:19,517 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 225 transitions, 498 flow [2022-12-13 21:44:19,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 225 transitions, 498 flow [2022-12-13 21:44:19,609 INFO L130 PetriNetUnfolder]: 149/1325 cut-off events. [2022-12-13 21:44:19,609 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 21:44:19,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 1325 events. 149/1325 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7652 event pairs, 1 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 773. Up to 32 conditions per place. [2022-12-13 21:44:19,627 INFO L119 LiptonReduction]: Number of co-enabled transitions 6052 [2022-12-13 21:44:32,747 INFO L134 LiptonReduction]: Checked pairs total: 13029 [2022-12-13 21:44:32,747 INFO L136 LiptonReduction]: Total number of compositions: 252 [2022-12-13 21:44:32,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:44:32,748 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;@1e40a8dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:44:32,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-12-13 21:44:32,749 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:44:32,749 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:44:32,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:32,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:44:32,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1235, now seen corresponding path program 1 times [2022-12-13 21:44:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:32,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337684829] [2022-12-13 21:44:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:32,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:32,753 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 21:44:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:32,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337684829] [2022-12-13 21:44:32,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337684829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:32,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:32,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:44:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700181168] [2022-12-13 21:44:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:44:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:44:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:44:32,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 477 [2022-12-13 21:44:32,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:32,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:32,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 477 [2022-12-13 21:44:32,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:33,622 INFO L130 PetriNetUnfolder]: 7901/12736 cut-off events. [2022-12-13 21:44:33,622 INFO L131 PetriNetUnfolder]: For 1033/1033 co-relation queries the response was YES. [2022-12-13 21:44:33,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25181 conditions, 12736 events. 7901/12736 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 81636 event pairs, 7485 based on Foata normal form. 0/8199 useless extension candidates. Maximal degree in co-relation 7813. Up to 11708 conditions per place. [2022-12-13 21:44:33,684 INFO L137 encePairwiseOnDemand]: 465/477 looper letters, 42 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2022-12-13 21:44:33,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 244 flow [2022-12-13 21:44:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:44:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:44:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2022-12-13 21:44:33,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47379454926624737 [2022-12-13 21:44:33,686 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2022-12-13 21:44:33,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2022-12-13 21:44:33,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:33,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2022-12-13 21:44:33,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:33,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:33,689 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:33,689 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 184 flow. Second operand 2 states and 452 transitions. [2022-12-13 21:44:33,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 244 flow [2022-12-13 21:44:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:44:33,694 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 160 flow [2022-12-13 21:44:33,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-12-13 21:44:33,694 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -11 predicate places. [2022-12-13 21:44:33,694 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 160 flow [2022-12-13 21:44:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:33,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:33,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:44:33,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 39441, now seen corresponding path program 1 times [2022-12-13 21:44:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218307945] [2022-12-13 21:44:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:33,757 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 21:44:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:33,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218307945] [2022-12-13 21:44:33,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218307945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:33,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:33,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460869939] [2022-12-13 21:44:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:33,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 477 [2022-12-13 21:44:33,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:33,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:33,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 477 [2022-12-13 21:44:33,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:34,724 INFO L130 PetriNetUnfolder]: 7901/12603 cut-off events. [2022-12-13 21:44:34,724 INFO L131 PetriNetUnfolder]: For 1033/1033 co-relation queries the response was YES. [2022-12-13 21:44:34,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25049 conditions, 12603 events. 7901/12603 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 79982 event pairs, 6461 based on Foata normal form. 0/8199 useless extension candidates. Maximal degree in co-relation 25042. Up to 10171 conditions per place. [2022-12-13 21:44:34,770 INFO L137 encePairwiseOnDemand]: 472/477 looper letters, 47 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2022-12-13 21:44:34,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 272 flow [2022-12-13 21:44:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2022-12-13 21:44:34,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42627533193570927 [2022-12-13 21:44:34,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2022-12-13 21:44:34,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2022-12-13 21:44:34,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:34,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2022-12-13 21:44:34,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:34,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:34,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:34,775 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 160 flow. Second operand 3 states and 610 transitions. [2022-12-13 21:44:34,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 272 flow [2022-12-13 21:44:34,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:44:34,779 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 162 flow [2022-12-13 21:44:34,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2022-12-13 21:44:34,779 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -11 predicate places. [2022-12-13 21:44:34,779 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 162 flow [2022-12-13 21:44:34,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:34,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:34,779 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:34,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:44:34,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash 39442, now seen corresponding path program 1 times [2022-12-13 21:44:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:34,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133697224] [2022-12-13 21:44:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:34,872 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 21:44:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:34,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133697224] [2022-12-13 21:44:34,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133697224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:34,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:34,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:34,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916602475] [2022-12-13 21:44:34,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:34,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:34,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:34,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 477 [2022-12-13 21:44:34,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:34,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:34,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 477 [2022-12-13 21:44:34,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:35,767 INFO L130 PetriNetUnfolder]: 7901/12470 cut-off events. [2022-12-13 21:44:35,767 INFO L131 PetriNetUnfolder]: For 1160/1160 co-relation queries the response was YES. [2022-12-13 21:44:35,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25430 conditions, 12470 events. 7901/12470 cut-off events. For 1160/1160 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 77434 event pairs, 7485 based on Foata normal form. 0/8334 useless extension candidates. Maximal degree in co-relation 25422. Up to 11707 conditions per place. [2022-12-13 21:44:35,804 INFO L137 encePairwiseOnDemand]: 474/477 looper letters, 41 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-12-13 21:44:35,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 242 flow [2022-12-13 21:44:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2022-12-13 21:44:35,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4206848357791754 [2022-12-13 21:44:35,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2022-12-13 21:44:35,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2022-12-13 21:44:35,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:35,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2022-12-13 21:44:35,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:35,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:35,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:35,808 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 162 flow. Second operand 3 states and 602 transitions. [2022-12-13 21:44:35,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 242 flow [2022-12-13 21:44:35,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:35,822 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 154 flow [2022-12-13 21:44:35,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2022-12-13 21:44:35,822 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -13 predicate places. [2022-12-13 21:44:35,822 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 154 flow [2022-12-13 21:44:35,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:35,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:35,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:44:35,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:35,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:35,823 INFO L85 PathProgramCache]: Analyzing trace with hash 39853, now seen corresponding path program 1 times [2022-12-13 21:44:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:35,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537328723] [2022-12-13 21:44:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:35,864 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 21:44:35,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:35,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537328723] [2022-12-13 21:44:35,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537328723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:35,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:35,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348553116] [2022-12-13 21:44:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:35,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:35,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 477 [2022-12-13 21:44:35,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 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 21:44:35,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:35,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 477 [2022-12-13 21:44:35,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:36,762 INFO L130 PetriNetUnfolder]: 7375/11675 cut-off events. [2022-12-13 21:44:36,762 INFO L131 PetriNetUnfolder]: For 1033/1033 co-relation queries the response was YES. [2022-12-13 21:44:36,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23328 conditions, 11675 events. 7375/11675 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 72563 event pairs, 5935 based on Foata normal form. 0/7680 useless extension candidates. Maximal degree in co-relation 23320. Up to 9376 conditions per place. [2022-12-13 21:44:36,805 INFO L137 encePairwiseOnDemand]: 472/477 looper letters, 45 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-12-13 21:44:36,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 262 flow [2022-12-13 21:44:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2022-12-13 21:44:36,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4332634521313767 [2022-12-13 21:44:36,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2022-12-13 21:44:36,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2022-12-13 21:44:36,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:36,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2022-12-13 21:44:36,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:36,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:36,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:36,811 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 154 flow. Second operand 3 states and 620 transitions. [2022-12-13 21:44:36,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 262 flow [2022-12-13 21:44:36,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:36,813 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 155 flow [2022-12-13 21:44:36,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-12-13 21:44:36,814 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -14 predicate places. [2022-12-13 21:44:36,814 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 155 flow [2022-12-13 21:44:36,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 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 21:44:36,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:36,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:44:36,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:44:36,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:36,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:36,815 INFO L85 PathProgramCache]: Analyzing trace with hash 39851, now seen corresponding path program 1 times [2022-12-13 21:44:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:36,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771775445] [2022-12-13 21:44:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:36,904 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 21:44:36,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:36,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771775445] [2022-12-13 21:44:36,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771775445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:36,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:36,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:36,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378201798] [2022-12-13 21:44:36,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:36,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:36,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:36,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:36,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:37,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 477 [2022-12-13 21:44:37,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:37,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:37,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 477 [2022-12-13 21:44:37,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:37,959 INFO L130 PetriNetUnfolder]: 7375/11685 cut-off events. [2022-12-13 21:44:37,959 INFO L131 PetriNetUnfolder]: For 1150/1150 co-relation queries the response was YES. [2022-12-13 21:44:37,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23850 conditions, 11685 events. 7375/11685 cut-off events. For 1150/1150 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 72229 event pairs, 6959 based on Foata normal form. 0/7943 useless extension candidates. Maximal degree in co-relation 23842. Up to 10911 conditions per place. [2022-12-13 21:44:37,999 INFO L137 encePairwiseOnDemand]: 473/477 looper letters, 39 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2022-12-13 21:44:37,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 243 flow [2022-12-13 21:44:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2022-12-13 21:44:38,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40950384346610763 [2022-12-13 21:44:38,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2022-12-13 21:44:38,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2022-12-13 21:44:38,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:38,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2022-12-13 21:44:38,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,005 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 155 flow. Second operand 3 states and 586 transitions. [2022-12-13 21:44:38,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 243 flow [2022-12-13 21:44:38,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:38,023 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 168 flow [2022-12-13 21:44:38,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2022-12-13 21:44:38,024 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -13 predicate places. [2022-12-13 21:44:38,024 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 168 flow [2022-12-13 21:44:38,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:38,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:38,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:44:38,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1236420, now seen corresponding path program 1 times [2022-12-13 21:44:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:38,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594922287] [2022-12-13 21:44:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:38,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:38,109 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 21:44:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:38,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594922287] [2022-12-13 21:44:38,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594922287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:38,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:38,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973096682] [2022-12-13 21:44:38,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:38,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:38,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 477 [2022-12-13 21:44:38,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:38,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 477 [2022-12-13 21:44:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:38,883 INFO L130 PetriNetUnfolder]: 7375/11510 cut-off events. [2022-12-13 21:44:38,883 INFO L131 PetriNetUnfolder]: For 1033/1033 co-relation queries the response was YES. [2022-12-13 21:44:38,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23204 conditions, 11510 events. 7375/11510 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 69890 event pairs, 5935 based on Foata normal form. 0/7687 useless extension candidates. Maximal degree in co-relation 23195. Up to 9375 conditions per place. [2022-12-13 21:44:38,920 INFO L137 encePairwiseOnDemand]: 472/477 looper letters, 47 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-12-13 21:44:38,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 280 flow [2022-12-13 21:44:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-12-13 21:44:38,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4248777078965758 [2022-12-13 21:44:38,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-12-13 21:44:38,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-12-13 21:44:38,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:38,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-12-13 21:44:38,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,927 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 168 flow. Second operand 3 states and 608 transitions. [2022-12-13 21:44:38,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 280 flow [2022-12-13 21:44:38,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:38,930 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 167 flow [2022-12-13 21:44:38,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-12-13 21:44:38,931 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -14 predicate places. [2022-12-13 21:44:38,931 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 167 flow [2022-12-13 21:44:38,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:38,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:38,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:38,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 21:44:38,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:38,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1236421, now seen corresponding path program 1 times [2022-12-13 21:44:38,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:38,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111868485] [2022-12-13 21:44:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:38,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:39,032 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 21:44:39,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:39,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111868485] [2022-12-13 21:44:39,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111868485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:39,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:39,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:44:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150696521] [2022-12-13 21:44:39,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:39,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:44:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:44:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:44:39,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 477 [2022-12-13 21:44:39,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:39,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:39,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 477 [2022-12-13 21:44:39,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:39,898 INFO L130 PetriNetUnfolder]: 7375/11335 cut-off events. [2022-12-13 21:44:39,898 INFO L131 PetriNetUnfolder]: For 1158/1158 co-relation queries the response was YES. [2022-12-13 21:44:39,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23540 conditions, 11335 events. 7375/11335 cut-off events. For 1158/1158 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 66598 event pairs, 6959 based on Foata normal form. 0/7768 useless extension candidates. Maximal degree in co-relation 23531. Up to 10911 conditions per place. [2022-12-13 21:44:39,924 INFO L137 encePairwiseOnDemand]: 474/477 looper letters, 41 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2022-12-13 21:44:39,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 247 flow [2022-12-13 21:44:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2022-12-13 21:44:39,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40670859538784065 [2022-12-13 21:44:39,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2022-12-13 21:44:39,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2022-12-13 21:44:39,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:39,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2022-12-13 21:44:39,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:39,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:39,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:39,928 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 167 flow. Second operand 3 states and 582 transitions. [2022-12-13 21:44:39,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 247 flow [2022-12-13 21:44:39,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:39,940 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 159 flow [2022-12-13 21:44:39,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2022-12-13 21:44:39,941 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -16 predicate places. [2022-12-13 21:44:39,941 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 159 flow [2022-12-13 21:44:39,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:39,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:39,941 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 21:44:39,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1236721, now seen corresponding path program 1 times [2022-12-13 21:44:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:39,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767671335] [2022-12-13 21:44:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:39,970 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 21:44:39,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:39,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767671335] [2022-12-13 21:44:39,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767671335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:39,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:39,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:39,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014194019] [2022-12-13 21:44:39,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:39,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:40,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 477 [2022-12-13 21:44:40,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:40,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:40,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 477 [2022-12-13 21:44:40,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:40,640 INFO L130 PetriNetUnfolder]: 6499/10034 cut-off events. [2022-12-13 21:44:40,640 INFO L131 PetriNetUnfolder]: For 1033/1033 co-relation queries the response was YES. [2022-12-13 21:44:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20426 conditions, 10034 events. 6499/10034 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 58790 event pairs, 5059 based on Foata normal form. 0/6855 useless extension candidates. Maximal degree in co-relation 20417. Up to 8074 conditions per place. [2022-12-13 21:44:40,670 INFO L137 encePairwiseOnDemand]: 472/477 looper letters, 45 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2022-12-13 21:44:40,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 267 flow [2022-12-13 21:44:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-12-13 21:44:40,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43186582809224316 [2022-12-13 21:44:40,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-12-13 21:44:40,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-12-13 21:44:40,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:40,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-12-13 21:44:40,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:40,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:40,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:40,675 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 159 flow. Second operand 3 states and 618 transitions. [2022-12-13 21:44:40,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 267 flow [2022-12-13 21:44:40,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:40,677 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 160 flow [2022-12-13 21:44:40,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2022-12-13 21:44:40,677 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -17 predicate places. [2022-12-13 21:44:40,677 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 160 flow [2022-12-13 21:44:40,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:40,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:40,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:44:40,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 21:44:40,678 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:40,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1236720, now seen corresponding path program 1 times [2022-12-13 21:44:40,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:40,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830119940] [2022-12-13 21:44:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:40,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:40,743 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 21:44:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:40,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830119940] [2022-12-13 21:44:40,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830119940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:40,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:40,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:44:40,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924843452] [2022-12-13 21:44:40,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:40,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:44:40,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:44:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:44:40,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 477 [2022-12-13 21:44:40,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:40,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:40,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 477 [2022-12-13 21:44:40,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:41,829 INFO L130 PetriNetUnfolder]: 6500/10039 cut-off events. [2022-12-13 21:44:41,830 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2022-12-13 21:44:41,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20951 conditions, 10039 events. 6500/10039 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 56956 event pairs, 6083 based on Foata normal form. 0/7114 useless extension candidates. Maximal degree in co-relation 20942. Up to 9609 conditions per place. [2022-12-13 21:44:41,868 INFO L137 encePairwiseOnDemand]: 470/477 looper letters, 41 selfloop transitions, 4 changer transitions 3/54 dead transitions. [2022-12-13 21:44:41,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 276 flow [2022-12-13 21:44:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-12-13 21:44:41,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4143955276030748 [2022-12-13 21:44:41,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-12-13 21:44:41,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-12-13 21:44:41,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:41,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-12-13 21:44:41,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:41,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:41,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:41,873 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 160 flow. Second operand 3 states and 593 transitions. [2022-12-13 21:44:41,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 276 flow [2022-12-13 21:44:41,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:41,892 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 180 flow [2022-12-13 21:44:41,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2022-12-13 21:44:41,892 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -16 predicate places. [2022-12-13 21:44:41,892 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 180 flow [2022-12-13 21:44:41,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:41,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:41,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 21:44:41,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 21:44:41,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash 38338763, now seen corresponding path program 1 times [2022-12-13 21:44:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:41,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500913945] [2022-12-13 21:44:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:41,934 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 21:44:41,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500913945] [2022-12-13 21:44:41,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500913945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:41,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:41,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:44:41,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970983985] [2022-12-13 21:44:41,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:41,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:44:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:44:41,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:44:42,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 477 [2022-12-13 21:44:42,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:42,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:42,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 477 [2022-12-13 21:44:42,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:43,437 INFO L130 PetriNetUnfolder]: 9793/15635 cut-off events. [2022-12-13 21:44:43,437 INFO L131 PetriNetUnfolder]: For 1078/1078 co-relation queries the response was YES. [2022-12-13 21:44:43,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33861 conditions, 15635 events. 9793/15635 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 100642 event pairs, 2810 based on Foata normal form. 0/11229 useless extension candidates. Maximal degree in co-relation 33851. Up to 4810 conditions per place. [2022-12-13 21:44:43,498 INFO L137 encePairwiseOnDemand]: 466/477 looper letters, 96 selfloop transitions, 12 changer transitions 0/114 dead transitions. [2022-12-13 21:44:43,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 114 transitions, 598 flow [2022-12-13 21:44:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:44:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:44:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2022-12-13 21:44:43,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4293501048218029 [2022-12-13 21:44:43,500 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2022-12-13 21:44:43,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2022-12-13 21:44:43,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:43,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2022-12-13 21:44:43,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:43,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 477.0) internal successors, (2862), 6 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:43,504 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 477.0) internal successors, (2862), 6 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:43,504 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 180 flow. Second operand 5 states and 1024 transitions. [2022-12-13 21:44:43,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 114 transitions, 598 flow [2022-12-13 21:44:43,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:43,512 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 257 flow [2022-12-13 21:44:43,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2022-12-13 21:44:43,512 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2022-12-13 21:44:43,512 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 257 flow [2022-12-13 21:44:43,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:43,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:43,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:44:43,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 21:44:43,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1188518001, now seen corresponding path program 1 times [2022-12-13 21:44:43,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:43,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932290525] [2022-12-13 21:44:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:43,544 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 21:44:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:43,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932290525] [2022-12-13 21:44:43,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932290525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:43,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:43,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013738912] [2022-12-13 21:44:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:43,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 477 [2022-12-13 21:44:43,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:43,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:43,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 477 [2022-12-13 21:44:43,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:44,607 INFO L130 PetriNetUnfolder]: 9289/14781 cut-off events. [2022-12-13 21:44:44,607 INFO L131 PetriNetUnfolder]: For 5043/5043 co-relation queries the response was YES. [2022-12-13 21:44:44,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35197 conditions, 14781 events. 9289/14781 cut-off events. For 5043/5043 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 95716 event pairs, 3367 based on Foata normal form. 0/11031 useless extension candidates. Maximal degree in co-relation 35185. Up to 13635 conditions per place. [2022-12-13 21:44:44,663 INFO L137 encePairwiseOnDemand]: 472/477 looper letters, 82 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2022-12-13 21:44:44,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 589 flow [2022-12-13 21:44:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2022-12-13 21:44:44,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45213137665967856 [2022-12-13 21:44:44,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2022-12-13 21:44:44,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2022-12-13 21:44:44,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:44,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2022-12-13 21:44:44,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:44,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:44,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:44,668 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 257 flow. Second operand 3 states and 647 transitions. [2022-12-13 21:44:44,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 91 transitions, 589 flow [2022-12-13 21:44:44,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:44:44,683 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 278 flow [2022-12-13 21:44:44,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2022-12-13 21:44:44,683 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2022-12-13 21:44:44,683 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 278 flow [2022-12-13 21:44:44,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:44,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:44,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:44:44,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 21:44:44,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:44,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1188502997, now seen corresponding path program 1 times [2022-12-13 21:44:44,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:44,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446776274] [2022-12-13 21:44:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:44,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446776274] [2022-12-13 21:44:44,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446776274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:44,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:44,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:44:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378244721] [2022-12-13 21:44:44,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:44,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 477 [2022-12-13 21:44:44,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:44,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:44,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 477 [2022-12-13 21:44:44,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:45,785 INFO L130 PetriNetUnfolder]: 8291/13371 cut-off events. [2022-12-13 21:44:45,785 INFO L131 PetriNetUnfolder]: For 7211/7211 co-relation queries the response was YES. [2022-12-13 21:44:45,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35870 conditions, 13371 events. 8291/13371 cut-off events. For 7211/7211 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 86211 event pairs, 6386 based on Foata normal form. 1/12292 useless extension candidates. Maximal degree in co-relation 35856. Up to 11246 conditions per place. [2022-12-13 21:44:45,842 INFO L137 encePairwiseOnDemand]: 474/477 looper letters, 57 selfloop transitions, 2 changer transitions 1/66 dead transitions. [2022-12-13 21:44:45,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 424 flow [2022-12-13 21:44:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:44:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2022-12-13 21:44:45,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43675751222921033 [2022-12-13 21:44:45,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2022-12-13 21:44:45,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2022-12-13 21:44:45,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:45,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2022-12-13 21:44:45,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:45,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:45,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 477.0) internal successors, (1908), 4 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:45,847 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 278 flow. Second operand 3 states and 625 transitions. [2022-12-13 21:44:45,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 424 flow [2022-12-13 21:44:45,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:45,853 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 267 flow [2022-12-13 21:44:45,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2022-12-13 21:44:45,853 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2022-12-13 21:44:45,853 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 267 flow [2022-12-13 21:44:45,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:45,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:45,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:44:45,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 21:44:45,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1821012715, now seen corresponding path program 1 times [2022-12-13 21:44:45,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:45,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012034434] [2022-12-13 21:44:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:45,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012034434] [2022-12-13 21:44:45,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012034434] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846609306] [2022-12-13 21:44:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:45,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:45,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:45,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:45,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:44:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:46,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:44:46,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:46,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:46,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-12-13 21:44:46,088 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 21:44:46,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 31 [2022-12-13 21:44:46,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-12-13 21:44:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:46,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:44:46,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846609306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:46,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:44:46,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 21:44:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606715324] [2022-12-13 21:44:46,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:44:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:44:46,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:44:46,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 477 [2022-12-13 21:44:46,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:46,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:46,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 477 [2022-12-13 21:44:46,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:47,462 INFO L130 PetriNetUnfolder]: 8303/13496 cut-off events. [2022-12-13 21:44:47,462 INFO L131 PetriNetUnfolder]: For 7723/7723 co-relation queries the response was YES. [2022-12-13 21:44:47,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36263 conditions, 13496 events. 8303/13496 cut-off events. For 7723/7723 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 88793 event pairs, 4050 based on Foata normal form. 0/13025 useless extension candidates. Maximal degree in co-relation 36249. Up to 12505 conditions per place. [2022-12-13 21:44:47,520 INFO L137 encePairwiseOnDemand]: 467/477 looper letters, 74 selfloop transitions, 9 changer transitions 2/91 dead transitions. [2022-12-13 21:44:47,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 91 transitions, 592 flow [2022-12-13 21:44:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:44:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:44:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 803 transitions. [2022-12-13 21:44:47,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42085953878406707 [2022-12-13 21:44:47,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 803 transitions. [2022-12-13 21:44:47,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 803 transitions. [2022-12-13 21:44:47,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:47,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 803 transitions. [2022-12-13 21:44:47,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:47,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 477.0) internal successors, (2385), 5 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:47,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 477.0) internal successors, (2385), 5 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:47,525 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 267 flow. Second operand 4 states and 803 transitions. [2022-12-13 21:44:47,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 91 transitions, 592 flow [2022-12-13 21:44:47,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 572 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 21:44:47,600 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 333 flow [2022-12-13 21:44:47,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2022-12-13 21:44:47,600 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2022-12-13 21:44:47,600 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 333 flow [2022-12-13 21:44:47,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:47,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:47,600 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:47,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 21:44:47,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 21:44:47,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -295739415, now seen corresponding path program 1 times [2022-12-13 21:44:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:47,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327812570] [2022-12-13 21:44:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:48,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:48,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327812570] [2022-12-13 21:44:48,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327812570] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:48,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488518351] [2022-12-13 21:44:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:48,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:48,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:48,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:48,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:44:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:48,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:44:48,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:48,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:48,515 INFO L321 Elim1Store]: treesize reduction 283, result has 26.7 percent of original size [2022-12-13 21:44:48,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 11 case distinctions, treesize of input 413 treesize of output 472 [2022-12-13 21:44:48,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2022-12-13 21:44:48,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 21:44:48,781 INFO L321 Elim1Store]: treesize reduction 40, result has 55.1 percent of original size [2022-12-13 21:44:48,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 11 case distinctions, treesize of input 65 treesize of output 89 [2022-12-13 21:44:50,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-12-13 21:44:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:54,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:44:54,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488518351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:54,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:44:54,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-12-13 21:44:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739264985] [2022-12-13 21:44:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:54,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:44:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:44:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:44:55,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 477 [2022-12-13 21:44:55,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:55,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 477 [2022-12-13 21:44:55,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:56,448 INFO L130 PetriNetUnfolder]: 8260/13405 cut-off events. [2022-12-13 21:44:56,448 INFO L131 PetriNetUnfolder]: For 9915/9915 co-relation queries the response was YES. [2022-12-13 21:44:56,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36907 conditions, 13405 events. 8260/13405 cut-off events. For 9915/9915 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 87383 event pairs, 7229 based on Foata normal form. 6/12828 useless extension candidates. Maximal degree in co-relation 36891. Up to 12642 conditions per place. [2022-12-13 21:44:56,509 INFO L137 encePairwiseOnDemand]: 467/477 looper letters, 68 selfloop transitions, 5 changer transitions 14/93 dead transitions. [2022-12-13 21:44:56,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 93 transitions, 680 flow [2022-12-13 21:44:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:44:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:44:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 799 transitions. [2022-12-13 21:44:56,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4187631027253669 [2022-12-13 21:44:56,512 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 799 transitions. [2022-12-13 21:44:56,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 799 transitions. [2022-12-13 21:44:56,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:56,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 799 transitions. [2022-12-13 21:44:56,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:56,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 477.0) internal successors, (2385), 5 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:56,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 477.0) internal successors, (2385), 5 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:56,515 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 333 flow. Second operand 4 states and 799 transitions. [2022-12-13 21:44:56,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 93 transitions, 680 flow [2022-12-13 21:44:56,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:44:56,529 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 390 flow [2022-12-13 21:44:56,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2022-12-13 21:44:56,529 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2022-12-13 21:44:56,530 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 390 flow [2022-12-13 21:44:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:56,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:56,530 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:56,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 21:44:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 21:44:56,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:44:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash -616817978, now seen corresponding path program 1 times [2022-12-13 21:44:56,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:56,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102824230] [2022-12-13 21:44:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:56,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:56,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102824230] [2022-12-13 21:44:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102824230] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702145013] [2022-12-13 21:44:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:56,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:56,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:56,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:56,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:44:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:56,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:44:56,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:57,307 INFO L321 Elim1Store]: treesize reduction 293, result has 27.7 percent of original size [2022-12-13 21:44:57,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 413 treesize of output 476 [2022-12-13 21:44:57,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2022-12-13 21:44:57,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 21:44:57,503 INFO L321 Elim1Store]: treesize reduction 48, result has 46.1 percent of original size [2022-12-13 21:44:57,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 11 case distinctions, treesize of input 61 treesize of output 77 [2022-12-13 21:44:57,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-12-13 21:44:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:58,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:58,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702145013] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:58,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:58,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 21:44:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457900623] [2022-12-13 21:44:58,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:58,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:44:58,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:44:58,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2022-12-13 21:44:59,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 477 [2022-12-13 21:44:59,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 390 flow. Second operand has 11 states, 11 states have (on average 119.63636363636364) internal successors, (1316), 11 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:59,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:59,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 477 [2022-12-13 21:44:59,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:00,700 INFO L130 PetriNetUnfolder]: 7607/12413 cut-off events. [2022-12-13 21:45:00,700 INFO L131 PetriNetUnfolder]: For 12291/12291 co-relation queries the response was YES. [2022-12-13 21:45:00,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36968 conditions, 12413 events. 7607/12413 cut-off events. For 12291/12291 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 80276 event pairs, 999 based on Foata normal form. 349/12762 useless extension candidates. Maximal degree in co-relation 36950. Up to 4390 conditions per place. [2022-12-13 21:45:00,757 INFO L137 encePairwiseOnDemand]: 464/477 looper letters, 95 selfloop transitions, 20 changer transitions 20/141 dead transitions. [2022-12-13 21:45:00,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 960 flow [2022-12-13 21:45:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:45:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:45:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1181 transitions. [2022-12-13 21:45:00,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.27509899836943863 [2022-12-13 21:45:00,760 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1181 transitions. [2022-12-13 21:45:00,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1181 transitions. [2022-12-13 21:45:00,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:00,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1181 transitions. [2022-12-13 21:45:00,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 131.22222222222223) internal successors, (1181), 9 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:00,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 477.0) internal successors, (4770), 10 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:00,765 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 477.0) internal successors, (4770), 10 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:00,765 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 390 flow. Second operand 9 states and 1181 transitions. [2022-12-13 21:45:00,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 960 flow [2022-12-13 21:45:00,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 141 transitions, 952 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 21:45:00,798 INFO L231 Difference]: Finished difference. Result has 79 places, 59 transitions, 434 flow [2022-12-13 21:45:00,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=434, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2022-12-13 21:45:00,799 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2022-12-13 21:45:00,799 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 434 flow [2022-12-13 21:45:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.63636363636364) internal successors, (1316), 11 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:00,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:00,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:00,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:45:01,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 21:45:01,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:45:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash -577986830, now seen corresponding path program 1 times [2022-12-13 21:45:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:01,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052180453] [2022-12-13 21:45:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:01,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:01,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052180453] [2022-12-13 21:45:01,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052180453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:01,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186790381] [2022-12-13 21:45:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:01,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:01,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:01,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:01,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:45:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:01,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 21:45:01,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:01,192 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 21:45:01,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 21:45:01,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 21:45:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:01,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:01,227 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#checkPool~0#1.base| v_ArrVal_438) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) 0)) is different from false [2022-12-13 21:45:01,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-12-13 21:45:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 21:45:01,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186790381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:45:01,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:45:01,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:45:01,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647030242] [2022-12-13 21:45:01,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:45:01,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:45:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:45:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2022-12-13 21:45:01,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 477 [2022-12-13 21:45:01,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 434 flow. Second operand has 9 states, 9 states have (on average 140.44444444444446) internal successors, (1264), 9 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:01,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:01,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 477 [2022-12-13 21:45:01,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:02,352 INFO L130 PetriNetUnfolder]: 7494/12129 cut-off events. [2022-12-13 21:45:02,352 INFO L131 PetriNetUnfolder]: For 19780/19780 co-relation queries the response was YES. [2022-12-13 21:45:02,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40119 conditions, 12129 events. 7494/12129 cut-off events. For 19780/19780 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 76453 event pairs, 5291 based on Foata normal form. 12/12141 useless extension candidates. Maximal degree in co-relation 40097. Up to 11428 conditions per place. [2022-12-13 21:45:02,393 INFO L137 encePairwiseOnDemand]: 469/477 looper letters, 55 selfloop transitions, 5 changer transitions 6/72 dead transitions. [2022-12-13 21:45:02,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 612 flow [2022-12-13 21:45:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:45:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:45:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 892 transitions. [2022-12-13 21:45:02,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3116701607267645 [2022-12-13 21:45:02,395 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 892 transitions. [2022-12-13 21:45:02,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 892 transitions. [2022-12-13 21:45:02,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:02,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 892 transitions. [2022-12-13 21:45:02,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.66666666666666) internal successors, (892), 6 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:02,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:02,398 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 477.0) internal successors, (3339), 7 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:02,398 INFO L175 Difference]: Start difference. First operand has 79 places, 59 transitions, 434 flow. Second operand 6 states and 892 transitions. [2022-12-13 21:45:02,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 612 flow [2022-12-13 21:45:02,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 545 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-12-13 21:45:02,453 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 357 flow [2022-12-13 21:45:02,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=477, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2022-12-13 21:45:02,454 INFO L288 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2022-12-13 21:45:02,454 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 357 flow [2022-12-13 21:45:02,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 140.44444444444446) internal successors, (1264), 9 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:02,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:02,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:02,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:45:02,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:02,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-12-13 21:45:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1130551261, now seen corresponding path program 1 times [2022-12-13 21:45:02,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:02,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983471605] [2022-12-13 21:45:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:02,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:45:02,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:45:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:45:02,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:45:02,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (33 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (32 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 34 remaining) [2022-12-13 21:45:02,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 34 remaining) [2022-12-13 21:45:02,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 34 remaining) [2022-12-13 21:45:02,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (3 of 34 remaining) [2022-12-13 21:45:02,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 34 remaining) [2022-12-13 21:45:02,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 34 remaining) [2022-12-13 21:45:02,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 34 remaining) [2022-12-13 21:45:02,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 21:45:02,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:02,717 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-12-13 21:45:02,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:45:02,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:45:02 BasicIcfg [2022-12-13 21:45:02,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:45:02,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:45:02,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:45:02,740 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:45:02,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:02" (3/4) ... [2022-12-13 21:45:02,742 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:45:02,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:45:02,742 INFO L158 Benchmark]: Toolchain (without parser) took 61368.32ms. Allocated memory was 113.2MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 69.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 519.4MB. Max. memory is 16.1GB. [2022-12-13 21:45:02,742 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:45:02,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.55ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 69.6MB in the beginning and 109.5MB in the end (delta: -39.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-12-13 21:45:02,743 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.12ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:45:02,743 INFO L158 Benchmark]: Boogie Preprocessor took 21.69ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:45:02,743 INFO L158 Benchmark]: RCFGBuilder took 443.32ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 83.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 21:45:02,743 INFO L158 Benchmark]: TraceAbstraction took 60278.67ms. Allocated memory was 151.0MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 82.9MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 493.9MB. Max. memory is 16.1GB. [2022-12-13 21:45:02,743 INFO L158 Benchmark]: Witness Printer took 2.44ms. Allocated memory is still 2.6GB. Free memory is still 2.1GB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:45:02,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.55ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 69.6MB in the beginning and 109.5MB in the end (delta: -39.9MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.12ms. Allocated memory is still 151.0MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.69ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 443.32ms. Allocated memory is still 151.0MB. Free memory was 104.6MB in the beginning and 83.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 60278.67ms. Allocated memory was 151.0MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 82.9MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 493.9MB. Max. memory is 16.1GB. * Witness Printer took 2.44ms. Allocated memory is still 2.6GB. Free memory is still 2.1GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.0s, 193 PlacesBefore, 57 PlacesAfterwards, 205 TransitionsBefore, 56 TransitionsAfterwards, 2694 CoEnabledTransitionPairs, 8 FixpointIterations, 102 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 27 ConcurrentYvCompositions, 13 ChoiceCompositions, 236 TotalNumberOfCompositions, 5004 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4049, independent: 4003, independent conditional: 0, independent unconditional: 4003, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1690, independent: 1678, independent conditional: 0, independent unconditional: 1678, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4049, independent: 2325, independent conditional: 0, independent unconditional: 2325, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 1690, unknown conditional: 0, unknown unconditional: 1690] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 81, Positive conditional cache size: 0, Positive unconditional cache size: 81, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.2s, 212 PlacesBefore, 69 PlacesAfterwards, 225 TransitionsBefore, 68 TransitionsAfterwards, 6052 CoEnabledTransitionPairs, 8 FixpointIterations, 105 TrivialSequentialCompositions, 105 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 27 ConcurrentYvCompositions, 14 ChoiceCompositions, 252 TotalNumberOfCompositions, 13029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8749, independent: 8657, independent conditional: 0, independent unconditional: 8657, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3545, independent: 3528, independent conditional: 0, independent unconditional: 3528, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8749, independent: 5129, independent conditional: 0, independent unconditional: 5129, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 3545, unknown conditional: 0, unknown unconditional: 3545] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1287]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1287. Possible FailurePath: [L1227] 0 static int iSet = 4; [L1228] 0 static int iCheck = 1; [L1229] 0 static int a = 0; [L1230] 0 static int b = 0; [L1237] 0 int i, err; [L1238] COND TRUE 0 argc != 1 [L1239] COND FALSE 0 !(argc != 3) [L1247] EXPR 0 \read(iSet) [L1247] 0 iSet > 100000 || iCheck > 100000 [L1247] EXPR 0 \read(iCheck) [L1247] 0 iSet > 100000 || iCheck > 100000 [L1247] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1250] EXPR 0 \read(iSet) [L1250] 0 pthread_t setPool[iSet]; [L1251] EXPR 0 \read(iCheck) [L1251] 0 pthread_t checkPool[iCheck]; [L1252] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, i=0, iCheck={11:0}, iSet={10:0}, setPool={15:0}] [L1252] EXPR 0 \read(iSet) [L1252] COND TRUE 0 i < iSet [L1253] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, setPool={15:0}] [L1253] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=0, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=-1, pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0))=0, setPool={15:0}] [L1280] 1 a = 1 VAL [a=1, b=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}] [L1253] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1252] 0 i++ VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=51, i=1, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, setPool={15:0}] [L1252] EXPR 0 \read(iSet) [L1252] COND FALSE 0 !(i < iSet) [L1258] 0 i = 0 VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=51, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, setPool={15:0}] [L1258] EXPR 0 \read(iCheck) [L1258] COND TRUE 0 i < iCheck [L1259-L1260] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\old(argc)=3, \read(iCheck)=2, \read(iSet)=1, a=1, argc=3, argv={50:49}, argv={50:49}, b=0, checkPool={13:0}, err=0, fprintf(stderr, "Error [%d] found creating set thread.\n", err)=51, i=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, param={0:0}, pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0))=0, setPool={15:0}] [L1285] COND TRUE 2 ! ((a == 0 && b == 0) || (a == 1 && b == -1)) [L1287] 2 reach_error() VAL [a=1, b=0, iCheck={11:0}, iSet={10:0}, param={0:0}, param={0:0}, param={0:0}, param={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1236]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1253]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1259]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 204 locations, 33 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.8s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.1s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2684 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1519 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3355 IncrementalHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 163 mSDtfsCounter, 3355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=13, InterpolantAutomatonStates: 44, 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, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 42 ConstructedInterpolants, 1 QuantifiedInterpolants, 910 SizeOfPredicates, 4 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 1/5 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 219 locations, 34 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: 43.3s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.4s, HoareTripleCheckerStatistics: 60 mSolverCounterUnknown, 3427 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1986 mSDsluCounter, 535 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 103 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 196 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4149 IncrementalHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 196 mSolverCounterUnsat, 394 mSDtfsCounter, 4149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=15, InterpolantAutomatonStates: 60, 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, 9.0s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 84 ConstructedInterpolants, 2 QuantifiedInterpolants, 6221 SizeOfPredicates, 44 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 2/10 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 21:45:02,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/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_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/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 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 --- 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 21:45:04,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:45:04,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:45:04,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:45:04,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:45:04,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:45:04,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:45:04,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:45:04,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:45:04,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:45:04,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:45:04,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:45:04,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:45:04,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:45:04,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:45:04,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:45:04,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:45:04,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:45:04,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:45:04,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:45:04,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:45:04,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:45:04,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:45:04,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:45:04,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:45:04,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:45:04,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:45:04,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:45:04,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:45:04,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:45:04,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:45:04,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:45:04,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:45:04,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:45:04,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:45:04,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:45:04,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:45:04,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:45:04,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:45:04,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:45:04,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:45:04,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:45:04,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:45:04,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:45:04,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:45:04,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:45:04,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:45:04,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:45:04,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:45:04,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:45:04,524 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:45:04,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:45:04,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:45:04,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:45:04,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:45:04,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:45:04,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:45:04,526 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:45:04,526 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:45:04,526 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:45:04,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:45:04,527 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:45:04,527 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:45:04,527 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:45:04,527 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:45:04,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:45:04,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:45:04,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:45:04,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:45:04,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:45:04,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:45:04,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:45:04,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:45:04,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:45:04,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:45:04,529 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:45:04,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:45:04,530 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:45:04,530 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:45:04,530 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 [2022-12-13 21:45:04,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:45:04,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:45:04,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:45:04,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:45:04,767 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:45:04,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/reorder_5.i [2022-12-13 21:45:07,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:45:07,495 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:45:07,496 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/sv-benchmarks/c/pthread/reorder_5.i [2022-12-13 21:45:07,506 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data/e87b216f7/94c6e15a62b744bab4e4e98a0fc92580/FLAGa233e715c [2022-12-13 21:45:07,517 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/data/e87b216f7/94c6e15a62b744bab4e4e98a0fc92580 [2022-12-13 21:45:07,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:45:07,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:45:07,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:45:07,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:45:07,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:45:07,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:45:07" (1/1) ... [2022-12-13 21:45:07,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b600eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:07, skipping insertion in model container [2022-12-13 21:45:07,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:45:07" (1/1) ... [2022-12-13 21:45:07,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:45:07,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:45:07,957 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:07,963 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:07,965 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:07,966 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:07,968 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:07,970 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:07,970 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-13 21:45:07,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:45:07,981 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:45:08,008 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:08,010 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:08,012 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:08,012 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:08,013 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:08,015 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 21:45:08,015 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_aa31bf9b-8416-48de-a413-44f43c97e9c8/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-13 21:45:08,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:45:08,073 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:45:08,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08 WrapperNode [2022-12-13 21:45:08,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:45:08,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:45:08,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:45:08,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:45:08,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,122 INFO L138 Inliner]: procedures = 373, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2022-12-13 21:45:08,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:45:08,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:45:08,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:45:08,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:45:08,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:45:08,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:45:08,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:45:08,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:45:08,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (1/1) ... [2022-12-13 21:45:08,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:45:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:08,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:45:08,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:45:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 21:45:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:45:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:45:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:45:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 21:45:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 21:45:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-13 21:45:08,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-13 21:45:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:45:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-13 21:45:08,212 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-13 21:45:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:45:08,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:45:08,213 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 21:45:08,343 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:45:08,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:45:08,726 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:45:08,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:45:08,734 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:45:08,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:45:08 BoogieIcfgContainer [2022-12-13 21:45:08,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:45:08,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:45:08,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:45:08,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:45:08,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:45:07" (1/3) ... [2022-12-13 21:45:08,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a557e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:45:08, skipping insertion in model container [2022-12-13 21:45:08,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:45:08" (2/3) ... [2022-12-13 21:45:08,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a557e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:45:08, skipping insertion in model container [2022-12-13 21:45:08,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:45:08" (3/3) ... [2022-12-13 21:45:08,745 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-12-13 21:45:08,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:45:08,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-13 21:45:08,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:45:08,827 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 21:45:08,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 204 transitions, 430 flow [2022-12-13 21:45:08,977 INFO L130 PetriNetUnfolder]: 37/429 cut-off events. [2022-12-13 21:45:08,978 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 21:45:08,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 429 events. 37/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1717 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2022-12-13 21:45:08,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 204 transitions, 430 flow [2022-12-13 21:45:08,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 204 transitions, 430 flow [2022-12-13 21:45:08,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:45:09,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 204 transitions, 430 flow [2022-12-13 21:45:09,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 204 transitions, 430 flow [2022-12-13 21:45:09,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 204 transitions, 430 flow [2022-12-13 21:45:09,039 INFO L130 PetriNetUnfolder]: 37/429 cut-off events. [2022-12-13 21:45:09,039 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 21:45:09,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 429 events. 37/429 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1717 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2022-12-13 21:45:09,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 2694 [2022-12-13 21:45:54,453 WARN L233 SmtUtils]: Spent 22.59s on a formula simplification. DAG size of input: 203 DAG size of output: 196 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:46:06,428 WARN L233 SmtUtils]: Spent 11.97s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:46:09,885 INFO L134 LiptonReduction]: Checked pairs total: 4994 [2022-12-13 21:46:09,886 INFO L136 LiptonReduction]: Total number of compositions: 245 [2022-12-13 21:46:09,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:46:09,904 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;@7e34b068, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:46:09,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 21:46:09,905 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:46:09,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:46:09,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:09,906 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:46:09,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:46:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash 750, now seen corresponding path program 1 times [2022-12-13 21:46:09,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:46:09,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411817206] [2022-12-13 21:46:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:09,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:46:09,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:46:09,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 21:46:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:09,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 21:46:09,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:09,978 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 21:46:09,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:46:09,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:46:09,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411817206] [2022-12-13 21:46:09,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411817206] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:09,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:09,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:46:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743909864] [2022-12-13 21:46:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:09,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:46:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:46:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:46:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:46:10,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 449 [2022-12-13 21:46:10,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 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 21:46:10,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:10,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 449 [2022-12-13 21:46:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:10,185 INFO L130 PetriNetUnfolder]: 262/592 cut-off events. [2022-12-13 21:46:10,185 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 21:46:10,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 592 events. 262/592 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3090 event pairs, 246 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 886. Up to 532 conditions per place. [2022-12-13 21:46:10,188 INFO L137 encePairwiseOnDemand]: 437/449 looper letters, 32 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2022-12-13 21:46:10,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 174 flow [2022-12-13 21:46:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:46:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:46:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 416 transitions. [2022-12-13 21:46:10,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46325167037861914 [2022-12-13 21:46:10,202 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 416 transitions. [2022-12-13 21:46:10,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 416 transitions. [2022-12-13 21:46:10,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:10,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 416 transitions. [2022-12-13 21:46:10,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:10,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:10,214 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:10,216 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 134 flow. Second operand 2 states and 416 transitions. [2022-12-13 21:46:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 174 flow [2022-12-13 21:46:10,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:46:10,221 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 110 flow [2022-12-13 21:46:10,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2022-12-13 21:46:10,225 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2022-12-13 21:46:10,225 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 110 flow [2022-12-13 21:46:10,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 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 21:46:10,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:10,226 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:46:10,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:46:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:10,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:46:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 23975, now seen corresponding path program 1 times [2022-12-13 21:46:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:46:10,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117002544] [2022-12-13 21:46:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:46:10,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:46:10,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 21:46:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:10,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:46:10,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:10,582 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-12-13 21:46:10,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-12-13 21:46:10,630 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 21:46:10,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:46:10,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:46:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117002544] [2022-12-13 21:46:10,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117002544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:10,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:10,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:46:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555234256] [2022-12-13 21:46:10,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:46:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:46:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:46:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:46:10,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 449 [2022-12-13 21:46:10,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:10,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:10,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 449 [2022-12-13 21:46:10,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:11,123 INFO L130 PetriNetUnfolder]: 262/584 cut-off events. [2022-12-13 21:46:11,124 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 21:46:11,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 584 events. 262/584 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3048 event pairs, 214 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 1146. Up to 467 conditions per place. [2022-12-13 21:46:11,127 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 33 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2022-12-13 21:46:11,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 186 flow [2022-12-13 21:46:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:46:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:46:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2022-12-13 21:46:11,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42464736451373425 [2022-12-13 21:46:11,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2022-12-13 21:46:11,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2022-12-13 21:46:11,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:11,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2022-12-13 21:46:11,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 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 21:46:11,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:11,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:11,138 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 110 flow. Second operand 3 states and 572 transitions. [2022-12-13 21:46:11,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 186 flow [2022-12-13 21:46:11,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:46:11,144 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 112 flow [2022-12-13 21:46:11,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2022-12-13 21:46:11,145 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2022-12-13 21:46:11,145 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 112 flow [2022-12-13 21:46:11,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:11,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:11,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:46:11,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 21:46:11,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:11,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [checkThreadErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2022-12-13 21:46:11,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:11,348 INFO L85 PathProgramCache]: Analyzing trace with hash 23976, now seen corresponding path program 1 times [2022-12-13 21:46:11,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:46:11,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913550335] [2022-12-13 21:46:11,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:11,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:46:11,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:46:11,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:46:11,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa31bf9b-8416-48de-a413-44f43c97e9c8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 21:46:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:11,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:46:11,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:46:11,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:46:12,184 INFO L321 Elim1Store]: treesize reduction 520, result has 10.5 percent of original size [2022-12-13 21:46:12,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 56 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 468 treesize of output 483 [2022-12-13 21:46:12,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-12-13 21:46:12,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 21:46:12,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 21:46:12,664 INFO L321 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2022-12-13 21:46:12,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 354 treesize of output 326 [2022-12-13 21:46:14,599 INFO L321 Elim1Store]: treesize reduction 110, result has 83.1 percent of original size [2022-12-13 21:46:14,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 55 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 65 case distinctions, treesize of input 335 treesize of output 821