./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:12:16,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:12:16,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:12:16,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:12:16,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:12:16,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:12:16,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:12:16,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:12:16,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:12:16,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:12:16,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:12:16,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:12:16,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:12:16,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:12:16,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:12:16,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:12:16,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:12:16,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:12:16,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:12:16,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:12:16,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:12:16,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:12:16,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:12:16,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:12:16,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:12:16,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:12:16,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:12:16,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:12:16,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:12:16,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:12:16,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:12:16,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:12:16,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:12:16,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:12:16,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:12:16,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:12:16,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:12:16,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:12:16,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:12:16,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:12:16,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:12:16,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:12:16,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:12:16,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:12:16,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:12:16,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:12:16,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:12:16,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:12:16,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:12:16,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:12:16,334 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:12:16,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:12:16,335 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:12:16,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:12:16,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:12:16,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:12:16,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:12:16,336 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:12:16,336 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:12:16,336 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:12:16,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:12:16,337 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:12:16,337 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:12:16,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:12:16,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:12:16,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:12:16,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:12:16,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:12:16,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:12:16,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:12:16,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:12:16,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:12:16,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:12:16,340 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:12:16,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:12:16,340 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_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2022-11-25 17:12:16,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:12:16,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:12:16,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:12:16,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:12:16,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:12:16,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2022-11-25 17:12:19,733 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:12:20,037 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:12:20,038 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2022-11-25 17:12:20,068 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/data/8fdb025ad/225ce9bc7f124d848bd8a042e87e94b0/FLAG1d764fc9c [2022-11-25 17:12:20,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/data/8fdb025ad/225ce9bc7f124d848bd8a042e87e94b0 [2022-11-25 17:12:20,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:12:20,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:12:20,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:12:20,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:12:20,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:12:20,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b310814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20, skipping insertion in model container [2022-11-25 17:12:20,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:12:20,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:12:20,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:12:20,756 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:12:20,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:12:20,842 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:12:20,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20 WrapperNode [2022-11-25 17:12:20,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:12:20,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:12:20,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:12:20,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:12:20,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,888 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-11-25 17:12:20,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:12:20,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:12:20,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:12:20,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:12:20,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,915 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:12:20,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:12:20,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:12:20,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:12:20,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (1/1) ... [2022-11-25 17:12:20,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:12:20,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:20,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:12:20,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:12:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:12:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:12:21,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:12:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:12:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:12:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:12:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:12:21,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:12:21,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:12:21,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:12:21,009 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:12:21,139 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:12:21,141 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:12:21,392 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:12:21,403 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:12:21,419 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:12:21,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:12:21 BoogieIcfgContainer [2022-11-25 17:12:21,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:12:21,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:12:21,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:12:21,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:12:21,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:12:20" (1/3) ... [2022-11-25 17:12:21,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5705d7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:12:21, skipping insertion in model container [2022-11-25 17:12:21,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:20" (2/3) ... [2022-11-25 17:12:21,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5705d7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:12:21, skipping insertion in model container [2022-11-25 17:12:21,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:12:21" (3/3) ... [2022-11-25 17:12:21,442 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2022-11-25 17:12:21,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:12:21,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-25 17:12:21,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:12:21,597 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:12:21,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 189 flow [2022-11-25 17:12:21,690 INFO L130 PetriNetUnfolder]: 4/91 cut-off events. [2022-11-25 17:12:21,690 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:12:21,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-25 17:12:21,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 189 flow [2022-11-25 17:12:21,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 185 flow [2022-11-25 17:12:21,705 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:12:21,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 185 flow [2022-11-25 17:12:21,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 185 flow [2022-11-25 17:12:21,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 185 flow [2022-11-25 17:12:21,754 INFO L130 PetriNetUnfolder]: 4/91 cut-off events. [2022-11-25 17:12:21,755 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:12:21,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 4/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-25 17:12:21,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 1380 [2022-11-25 17:12:24,825 INFO L134 LiptonReduction]: Checked pairs total: 2374 [2022-11-25 17:12:24,825 INFO L136 LiptonReduction]: Total number of compositions: 98 [2022-11-25 17:12:24,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:12:24,849 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;@1a20b4de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:12:24,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 17:12:24,851 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-11-25 17:12:24,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:12:24,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:24,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:12:24,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:24,858 INFO L85 PathProgramCache]: Analyzing trace with hash 11210, now seen corresponding path program 1 times [2022-11-25 17:12:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:24,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313880167] [2022-11-25 17:12:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313880167] [2022-11-25 17:12:25,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313880167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:25,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:25,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:12:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639761977] [2022-11-25 17:12:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:12:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:12:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:12:25,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 190 [2022-11-25 17:12:25,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:25,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 190 [2022-11-25 17:12:25,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:25,115 INFO L130 PetriNetUnfolder]: 57/131 cut-off events. [2022-11-25 17:12:25,115 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:12:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 131 events. 57/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 453 event pairs, 56 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 254. Up to 132 conditions per place. [2022-11-25 17:12:25,118 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-11-25 17:12:25,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 79 flow [2022-11-25 17:12:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:12:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:12:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 200 transitions. [2022-11-25 17:12:25,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2022-11-25 17:12:25,132 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 200 transitions. [2022-11-25 17:12:25,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 200 transitions. [2022-11-25 17:12:25,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:25,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 200 transitions. [2022-11-25 17:12:25,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 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) [2022-11-25 17:12:25,145 INFO L81 ComplementDD]: Finished complementDD. Result has 3 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) [2022-11-25 17:12:25,147 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 2 states and 200 transitions. [2022-11-25 17:12:25,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 79 flow [2022-11-25 17:12:25,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:12:25,151 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 40 flow [2022-11-25 17:12:25,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2022-11-25 17:12:25,157 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2022-11-25 17:12:25,157 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 40 flow [2022-11-25 17:12:25,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:25,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:12:25,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:12:25,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash 10779343, now seen corresponding path program 1 times [2022-11-25 17:12:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:25,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704699455] [2022-11-25 17:12:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:25,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:25,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704699455] [2022-11-25 17:12:25,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704699455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:25,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:25,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:12:25,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679135279] [2022-11-25 17:12:25,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:12:25,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:12:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:12:25,256 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 190 [2022-11-25 17:12:25,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:25,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 190 [2022-11-25 17:12:25,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:25,316 INFO L130 PetriNetUnfolder]: 57/132 cut-off events. [2022-11-25 17:12:25,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:12:25,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 132 events. 57/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 453 event pairs, 56 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 266. Up to 132 conditions per place. [2022-11-25 17:12:25,318 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-11-25 17:12:25,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 82 flow [2022-11-25 17:12:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:12:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:12:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-11-25 17:12:25,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2022-11-25 17:12:25,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-11-25 17:12:25,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-11-25 17:12:25,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:25,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-11-25 17:12:25,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,326 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 40 flow. Second operand 3 states and 273 transitions. [2022-11-25 17:12:25,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 82 flow [2022-11-25 17:12:25,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:12:25,328 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 52 flow [2022-11-25 17:12:25,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2022-11-25 17:12:25,329 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2022-11-25 17:12:25,329 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 52 flow [2022-11-25 17:12:25,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:25,330 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:12:25,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:12:25,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash 333713783, now seen corresponding path program 1 times [2022-11-25 17:12:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:25,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703054497] [2022-11-25 17:12:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:25,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:25,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:25,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703054497] [2022-11-25 17:12:25,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703054497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:25,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733525717] [2022-11-25 17:12:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:25,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:25,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:25,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:25,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:12:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:25,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:12:25,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:25,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:12:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:25,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733525717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:12:25,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:12:25,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-25 17:12:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318128668] [2022-11-25 17:12:25,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:12:25,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:25,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:25,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2022-11-25 17:12:25,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:25,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2022-11-25 17:12:25,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:25,711 INFO L130 PetriNetUnfolder]: 57/135 cut-off events. [2022-11-25 17:12:25,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:12:25,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 57/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 453 event pairs, 56 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 280. Up to 132 conditions per place. [2022-11-25 17:12:25,713 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 18 selfloop transitions, 5 changer transitions 0/23 dead transitions. [2022-11-25 17:12:25,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 110 flow [2022-11-25 17:12:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:12:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:12:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2022-11-25 17:12:25,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45964912280701753 [2022-11-25 17:12:25,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 524 transitions. [2022-11-25 17:12:25,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 524 transitions. [2022-11-25 17:12:25,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:25,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 524 transitions. [2022-11-25 17:12:25,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 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) [2022-11-25 17:12:25,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,737 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 6 states and 524 transitions. [2022-11-25 17:12:25,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 110 flow [2022-11-25 17:12:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 106 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:12:25,739 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 84 flow [2022-11-25 17:12:25,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2022-11-25 17:12:25,740 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-11-25 17:12:25,741 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 84 flow [2022-11-25 17:12:25,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:25,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:25,742 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 17:12:25,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:12:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:25,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1624709937, now seen corresponding path program 2 times [2022-11-25 17:12:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:25,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959812407] [2022-11-25 17:12:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:26,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959812407] [2022-11-25 17:12:26,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959812407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:26,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741791529] [2022-11-25 17:12:26,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:12:26,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:26,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:26,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:12:26,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:12:26,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:12:26,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:12:26,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:26,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:12:26,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-25 17:12:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:12:26,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:12:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741791529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:26,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:12:26,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2022-11-25 17:12:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635282432] [2022-11-25 17:12:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:26,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:12:26,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:12:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:12:26,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 190 [2022-11-25 17:12:26,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:26,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:26,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 190 [2022-11-25 17:12:26,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:26,711 INFO L130 PetriNetUnfolder]: 50/120 cut-off events. [2022-11-25 17:12:26,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:12:26,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 120 events. 50/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 380 event pairs, 35 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 260. Up to 90 conditions per place. [2022-11-25 17:12:26,714 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2022-11-25 17:12:26,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 154 flow [2022-11-25 17:12:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:12:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:12:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2022-11-25 17:12:26,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48771929824561405 [2022-11-25 17:12:26,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2022-11-25 17:12:26,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2022-11-25 17:12:26,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:26,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2022-11-25 17:12:26,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:26,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:26,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:26,729 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 84 flow. Second operand 3 states and 278 transitions. [2022-11-25 17:12:26,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 154 flow [2022-11-25 17:12:26,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 140 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:12:26,732 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 74 flow [2022-11-25 17:12:26,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-11-25 17:12:26,734 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-11-25 17:12:26,735 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 74 flow [2022-11-25 17:12:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:26,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:26,736 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 17:12:26,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:12:26,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:26,942 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1624709936, now seen corresponding path program 1 times [2022-11-25 17:12:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:26,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748818943] [2022-11-25 17:12:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:27,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:27,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748818943] [2022-11-25 17:12:27,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748818943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:27,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465326047] [2022-11-25 17:12:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:27,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:27,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:27,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:27,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:12:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:27,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:12:27,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:27,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:12:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:27,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465326047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:12:27,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:12:27,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-25 17:12:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615572622] [2022-11-25 17:12:27,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:12:27,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:12:27,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:12:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:12:27,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 190 [2022-11-25 17:12:27,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 74 flow. Second operand has 12 states, 12 states have (on average 84.16666666666667) internal successors, (1010), 12 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:27,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:27,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 190 [2022-11-25 17:12:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:27,427 INFO L130 PetriNetUnfolder]: 50/126 cut-off events. [2022-11-25 17:12:27,427 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-25 17:12:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 126 events. 50/126 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 380 event pairs, 49 based on Foata normal form. 6/92 useless extension candidates. Maximal degree in co-relation 294. Up to 117 conditions per place. [2022-11-25 17:12:27,429 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 17 selfloop transitions, 11 changer transitions 0/28 dead transitions. [2022-11-25 17:12:27,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 166 flow [2022-11-25 17:12:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:12:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:12:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1030 transitions. [2022-11-25 17:12:27,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2022-11-25 17:12:27,433 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1030 transitions. [2022-11-25 17:12:27,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1030 transitions. [2022-11-25 17:12:27,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:27,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1030 transitions. [2022-11-25 17:12:27,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 85.83333333333333) internal successors, (1030), 12 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:27,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 190.0) internal successors, (2470), 13 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:27,444 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 190.0) internal successors, (2470), 13 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:27,444 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 74 flow. Second operand 12 states and 1030 transitions. [2022-11-25 17:12:27,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 166 flow [2022-11-25 17:12:27,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 28 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:12:27,449 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 152 flow [2022-11-25 17:12:27,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2022-11-25 17:12:27,452 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2022-11-25 17:12:27,452 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 152 flow [2022-11-25 17:12:27,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.16666666666667) internal successors, (1010), 12 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:27,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:27,453 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2022-11-25 17:12:27,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:12:27,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:27,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2008425424, now seen corresponding path program 2 times [2022-11-25 17:12:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738436571] [2022-11-25 17:12:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:12:27,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:27,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738436571] [2022-11-25 17:12:27,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738436571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:27,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:27,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:12:27,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930039618] [2022-11-25 17:12:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:12:27,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:12:28,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:12:28,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2022-11-25 17:12:28,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:28,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2022-11-25 17:12:28,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:28,164 INFO L130 PetriNetUnfolder]: 37/98 cut-off events. [2022-11-25 17:12:28,165 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-25 17:12:28,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 98 events. 37/98 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 36 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 245. Up to 86 conditions per place. [2022-11-25 17:12:28,170 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2022-11-25 17:12:28,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 26 transitions, 200 flow [2022-11-25 17:12:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:12:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:12:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2022-11-25 17:12:28,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2022-11-25 17:12:28,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2022-11-25 17:12:28,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2022-11-25 17:12:28,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:28,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2022-11-25 17:12:28,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,176 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 152 flow. Second operand 4 states and 338 transitions. [2022-11-25 17:12:28,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 26 transitions, 200 flow [2022-11-25 17:12:28,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 26 transitions, 152 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 17:12:28,182 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 104 flow [2022-11-25 17:12:28,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2022-11-25 17:12:28,185 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2022-11-25 17:12:28,186 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 104 flow [2022-11-25 17:12:28,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:28,186 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2022-11-25 17:12:28,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:12:28,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:28,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2131646932, now seen corresponding path program 1 times [2022-11-25 17:12:28,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:28,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936633331] [2022-11-25 17:12:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:28,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:12:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:28,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936633331] [2022-11-25 17:12:28,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936633331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:28,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:28,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:12:28,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937007517] [2022-11-25 17:12:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:28,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:12:28,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:12:28,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:12:28,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 190 [2022-11-25 17:12:28,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:28,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 190 [2022-11-25 17:12:28,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:28,587 INFO L130 PetriNetUnfolder]: 23/80 cut-off events. [2022-11-25 17:12:28,587 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-25 17:12:28,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 80 events. 23/80 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 211 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 187. Up to 36 conditions per place. [2022-11-25 17:12:28,588 INFO L137 encePairwiseOnDemand]: 182/190 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2022-11-25 17:12:28,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 204 flow [2022-11-25 17:12:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:12:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:12:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2022-11-25 17:12:28,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2022-11-25 17:12:28,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 426 transitions. [2022-11-25 17:12:28,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 426 transitions. [2022-11-25 17:12:28,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:28,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 426 transitions. [2022-11-25 17:12:28,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,596 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 104 flow. Second operand 5 states and 426 transitions. [2022-11-25 17:12:28,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 204 flow [2022-11-25 17:12:28,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:12:28,600 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 155 flow [2022-11-25 17:12:28,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2022-11-25 17:12:28,601 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2022-11-25 17:12:28,601 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 155 flow [2022-11-25 17:12:28,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:28,602 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:12:28,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1537714651, now seen corresponding path program 1 times [2022-11-25 17:12:28,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:28,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178268484] [2022-11-25 17:12:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:12:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:28,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178268484] [2022-11-25 17:12:28,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178268484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:28,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:28,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:12:28,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703990659] [2022-11-25 17:12:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:12:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:12:28,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:12:28,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2022-11-25 17:12:28,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:28,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2022-11-25 17:12:28,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:28,864 INFO L130 PetriNetUnfolder]: 20/67 cut-off events. [2022-11-25 17:12:28,864 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-11-25 17:12:28,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 67 events. 20/67 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 16 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 201. Up to 42 conditions per place. [2022-11-25 17:12:28,865 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 21 selfloop transitions, 4 changer transitions 6/31 dead transitions. [2022-11-25 17:12:28,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 31 transitions, 211 flow [2022-11-25 17:12:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:12:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:12:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2022-11-25 17:12:28,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2022-11-25 17:12:28,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2022-11-25 17:12:28,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2022-11-25 17:12:28,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:28,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2022-11-25 17:12:28,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,872 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 155 flow. Second operand 4 states and 340 transitions. [2022-11-25 17:12:28,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 31 transitions, 211 flow [2022-11-25 17:12:28,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 31 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:12:28,875 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 133 flow [2022-11-25 17:12:28,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2022-11-25 17:12:28,878 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2022-11-25 17:12:28,878 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 133 flow [2022-11-25 17:12:28,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:28,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:28,879 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:12:28,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 977355242, now seen corresponding path program 1 times [2022-11-25 17:12:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153614570] [2022-11-25 17:12:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:12:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:29,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153614570] [2022-11-25 17:12:29,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153614570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:29,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:29,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:29,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590892152] [2022-11-25 17:12:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:29,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:12:29,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:12:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:12:29,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 190 [2022-11-25 17:12:29,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 133 flow. Second operand has 8 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:29,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:29,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 190 [2022-11-25 17:12:29,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:29,642 INFO L130 PetriNetUnfolder]: 12/47 cut-off events. [2022-11-25 17:12:29,642 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-11-25 17:12:29,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 47 events. 12/47 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 2/49 useless extension candidates. Maximal degree in co-relation 156. Up to 16 conditions per place. [2022-11-25 17:12:29,643 INFO L137 encePairwiseOnDemand]: 181/190 looper letters, 19 selfloop transitions, 5 changer transitions 10/34 dead transitions. [2022-11-25 17:12:29,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 34 transitions, 223 flow [2022-11-25 17:12:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:12:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:12:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2022-11-25 17:12:29,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39323308270676693 [2022-11-25 17:12:29,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2022-11-25 17:12:29,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2022-11-25 17:12:29,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:29,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2022-11-25 17:12:29,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:29,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:29,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:29,650 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 133 flow. Second operand 7 states and 523 transitions. [2022-11-25 17:12:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 34 transitions, 223 flow [2022-11-25 17:12:29,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:12:29,652 INFO L231 Difference]: Finished difference. Result has 51 places, 23 transitions, 130 flow [2022-11-25 17:12:29,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=51, PETRI_TRANSITIONS=23} [2022-11-25 17:12:29,653 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2022-11-25 17:12:29,653 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 23 transitions, 130 flow [2022-11-25 17:12:29,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:29,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:29,654 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:29,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:12:29,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-25 17:12:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -274991128, now seen corresponding path program 2 times [2022-11-25 17:12:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:29,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473369582] [2022-11-25 17:12:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:12:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473369582] [2022-11-25 17:12:29,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473369582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:29,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:29,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:12:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749796275] [2022-11-25 17:12:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:29,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:29,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:29,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2022-11-25 17:12:29,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 23 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:29,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:29,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2022-11-25 17:12:29,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:30,030 INFO L130 PetriNetUnfolder]: 4/28 cut-off events. [2022-11-25 17:12:30,030 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-11-25 17:12:30,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 28 events. 4/28 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 109. Up to 13 conditions per place. [2022-11-25 17:12:30,031 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2022-11-25 17:12:30,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 24 transitions, 176 flow [2022-11-25 17:12:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:12:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:12:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 453 transitions. [2022-11-25 17:12:30,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3973684210526316 [2022-11-25 17:12:30,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 453 transitions. [2022-11-25 17:12:30,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 453 transitions. [2022-11-25 17:12:30,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:30,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 453 transitions. [2022-11-25 17:12:30,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:30,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:30,046 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:30,046 INFO L175 Difference]: Start difference. First operand has 51 places, 23 transitions, 130 flow. Second operand 6 states and 453 transitions. [2022-11-25 17:12:30,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 24 transitions, 176 flow [2022-11-25 17:12:30,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 24 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:12:30,053 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-11-25 17:12:30,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-11-25 17:12:30,055 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2022-11-25 17:12:30,055 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-11-25 17:12:30,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:30,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2022-11-25 17:12:30,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-11-25 17:12:30,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-11-25 17:12:30,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-11-25 17:12:30,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-11-25 17:12:30,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-11-25 17:12:30,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (9 of 16 remaining) [2022-11-25 17:12:30,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2022-11-25 17:12:30,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-11-25 17:12:30,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-11-25 17:12:30,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-11-25 17:12:30,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-11-25 17:12:30,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2022-11-25 17:12:30,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2022-11-25 17:12:30,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2022-11-25 17:12:30,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 16 remaining) [2022-11-25 17:12:30,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:12:30,065 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2022-11-25 17:12:30,072 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:12:30,072 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:12:30,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:12:30 BasicIcfg [2022-11-25 17:12:30,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:12:30,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:12:30,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:12:30,078 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:12:30,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:12:21" (3/4) ... [2022-11-25 17:12:30,080 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:12:30,087 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-25 17:12:30,090 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-25 17:12:30,091 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:12:30,091 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:12:30,121 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:12:30,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:12:30,122 INFO L158 Benchmark]: Toolchain (without parser) took 10035.73ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 119.4MB in the beginning and 119.8MB in the end (delta: -392.8kB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,123 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 121.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:12:30,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.72ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 91.3MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.53ms. Allocated memory is still 151.0MB. Free memory was 91.3MB in the beginning and 88.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,124 INFO L158 Benchmark]: Boogie Preprocessor took 29.50ms. Allocated memory is still 151.0MB. Free memory was 88.8MB in the beginning and 87.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,124 INFO L158 Benchmark]: RCFGBuilder took 486.99ms. Allocated memory is still 151.0MB. Free memory was 87.4MB in the beginning and 119.7MB in the end (delta: -32.2MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,125 INFO L158 Benchmark]: TraceAbstraction took 8653.04ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 119.0MB in the beginning and 121.9MB in the end (delta: -2.9MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,125 INFO L158 Benchmark]: Witness Printer took 44.46ms. Allocated memory is still 184.5MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:12:30,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 121.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.72ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 91.3MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.53ms. Allocated memory is still 151.0MB. Free memory was 91.3MB in the beginning and 88.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.50ms. Allocated memory is still 151.0MB. Free memory was 88.8MB in the beginning and 87.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 486.99ms. Allocated memory is still 151.0MB. Free memory was 87.4MB in the beginning and 119.7MB in the end (delta: -32.2MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8653.04ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 119.0MB in the beginning and 121.9MB in the end (delta: -2.9MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 44.46ms. Allocated memory is still 184.5MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 91 PlacesBefore, 27 PlacesAfterwards, 91 TransitionsBefore, 24 TransitionsAfterwards, 1380 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 98 TotalNumberOfCompositions, 2374 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1559, independent: 1451, independent conditional: 0, independent unconditional: 1451, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1022, independent: 988, independent conditional: 0, independent unconditional: 988, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1022, independent: 977, independent conditional: 0, independent unconditional: 977, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 11, independent conditional: 0, independent unconditional: 11, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 204, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1559, independent: 463, independent conditional: 0, independent unconditional: 463, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 1022, unknown conditional: 0, unknown unconditional: 1022] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 936]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 16 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: 8.4s, OverallIterations: 10, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 827 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 114 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1537 IncrementalHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 13 mSDtfsCounter, 1537 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=7, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 135 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 1032 SizeOfPredicates, 2 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 285/328 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:12:30,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b062e4c6-6d16-49c8-8168-62e12a91d5a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE