./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:44:35,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:44:35,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:44:35,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:44:35,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:44:35,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:44:35,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:44:35,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:44:35,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:44:35,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:44:35,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:44:35,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:44:35,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:44:35,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:44:35,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:44:35,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:44:35,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:44:35,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:44:35,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:44:35,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:44:35,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:44:35,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:44:35,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:44:35,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:44:35,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:44:35,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:44:35,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:44:35,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:44:35,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:44:35,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:44:35,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:44:35,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:44:35,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:44:35,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:44:35,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:44:35,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:44:35,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:44:35,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:44:35,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:44:35,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:44:35,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:44:35,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:44:35,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:44:35,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:44:35,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:44:35,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:44:35,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:44:35,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:44:35,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:44:35,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:44:35,500 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:44:35,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:44:35,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:44:35,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:44:35,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:44:35,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:44:35,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:44:35,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:44:35,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:44:35,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:44:35,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:44:35,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:44:35,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:44:35,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:44:35,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:44:35,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:44:35,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:44:35,503 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:44:35,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:44:35,504 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:44:35,504 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_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa [2022-12-13 21:44:35,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:44:35,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:44:35,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:44:35,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:44:35,690 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:44:35,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2022-12-13 21:44:38,321 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:44:38,535 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:44:38,535 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2022-12-13 21:44:38,548 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data/863ff33da/e6f7c1931690411bbd469f58186aa3fc/FLAGb27cb3578 [2022-12-13 21:44:38,560 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data/863ff33da/e6f7c1931690411bbd469f58186aa3fc [2022-12-13 21:44:38,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:44:38,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:44:38,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:44:38,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:44:38,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:44:38,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:44:38" (1/1) ... [2022-12-13 21:44:38,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf3d511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:38, skipping insertion in model container [2022-12-13 21:44:38,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:44:38" (1/1) ... [2022-12-13 21:44:38,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:44:38,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:44:39,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:44:39,116 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:44:39,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:44:39,231 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:44:39,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39 WrapperNode [2022-12-13 21:44:39,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:44:39,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:44:39,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:44:39,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:44:39,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,280 INFO L138 Inliner]: procedures = 371, calls = 35, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 119 [2022-12-13 21:44:39,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:44:39,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:44:39,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:44:39,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:44:39,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:44:39,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:44:39,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:44:39,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:44:39,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (1/1) ... [2022-12-13 21:44:39,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:44:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:39,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:44:39,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:44:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:44:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:44:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:44:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:44:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:44:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:44:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:44:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:44:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:44:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 21:44:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 21:44:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:44:39,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:44:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:44:39,363 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:44:39,471 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:44:39,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:44:39,744 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:44:39,753 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:44:39,753 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:44:39,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:39 BoogieIcfgContainer [2022-12-13 21:44:39,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:44:39,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:44:39,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:44:39,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:44:39,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:44:38" (1/3) ... [2022-12-13 21:44:39,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480dbaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:44:39, skipping insertion in model container [2022-12-13 21:44:39,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:39" (2/3) ... [2022-12-13 21:44:39,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480dbaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:44:39, skipping insertion in model container [2022-12-13 21:44:39,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:39" (3/3) ... [2022-12-13 21:44:39,764 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_09-arraylist.i [2022-12-13 21:44:39,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:44:39,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-12-13 21:44:39,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:44:39,839 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:44:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 190 transitions, 385 flow [2022-12-13 21:44:39,913 INFO L130 PetriNetUnfolder]: 4/189 cut-off events. [2022-12-13 21:44:39,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:44:39,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 189 events. 4/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 411 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 21:44:39,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 190 transitions, 385 flow [2022-12-13 21:44:39,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 189 transitions, 381 flow [2022-12-13 21:44:39,924 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:44:39,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 189 transitions, 381 flow [2022-12-13 21:44:39,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 189 transitions, 381 flow [2022-12-13 21:44:39,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 189 transitions, 381 flow [2022-12-13 21:44:39,970 INFO L130 PetriNetUnfolder]: 4/189 cut-off events. [2022-12-13 21:44:39,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:44:39,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 189 events. 4/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 410 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 21:44:39,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 3136 [2022-12-13 21:44:55,478 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 202 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:45:05,368 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 206 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:45:08,278 INFO L134 LiptonReduction]: Checked pairs total: 10797 [2022-12-13 21:45:08,278 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-12-13 21:45:08,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:45:08,297 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;@9cef704, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:45:08,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-12-13 21:45:08,300 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:45:08,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:45:08,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:08,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:45:08,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:08,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:08,305 INFO L85 PathProgramCache]: Analyzing trace with hash 22989, now seen corresponding path program 1 times [2022-12-13 21:45:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:08,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584632846] [2022-12-13 21:45:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584632846] [2022-12-13 21:45:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584632846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:08,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:08,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:45:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131316864] [2022-12-13 21:45:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:08,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:45:08,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:08,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:45:08,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:45:08,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 422 [2022-12-13 21:45:08,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:08,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:08,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 422 [2022-12-13 21:45:08,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:08,724 INFO L130 PetriNetUnfolder]: 222/505 cut-off events. [2022-12-13 21:45:08,725 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:45:08,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 505 events. 222/505 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2393 event pairs, 221 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 966. Up to 481 conditions per place. [2022-12-13 21:45:08,728 INFO L137 encePairwiseOnDemand]: 399/422 looper letters, 39 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 21:45:08,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 175 flow [2022-12-13 21:45:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:45:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:45:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2022-12-13 21:45:08,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4928909952606635 [2022-12-13 21:45:08,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2022-12-13 21:45:08,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2022-12-13 21:45:08,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:08,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2022-12-13 21:45:08,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:08,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:08,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:08,754 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 123 flow. Second operand 3 states and 624 transitions. [2022-12-13 21:45:08,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 175 flow [2022-12-13 21:45:08,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:45:08,758 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 102 flow [2022-12-13 21:45:08,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2022-12-13 21:45:08,763 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -16 predicate places. [2022-12-13 21:45:08,763 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 102 flow [2022-12-13 21:45:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:08,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:08,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:45:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:45:08,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash 23049, now seen corresponding path program 1 times [2022-12-13 21:45:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:08,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775688613] [2022-12-13 21:45:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:08,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:08,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775688613] [2022-12-13 21:45:08,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775688613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:08,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:08,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:45:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984192910] [2022-12-13 21:45:08,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:08,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:45:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:45:08,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:45:09,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 422 [2022-12-13 21:45:09,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:09,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 422 [2022-12-13 21:45:09,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:09,162 INFO L130 PetriNetUnfolder]: 196/447 cut-off events. [2022-12-13 21:45:09,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:45:09,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 447 events. 196/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2061 event pairs, 131 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 875. Up to 289 conditions per place. [2022-12-13 21:45:09,165 INFO L137 encePairwiseOnDemand]: 417/422 looper letters, 51 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-12-13 21:45:09,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 236 flow [2022-12-13 21:45:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:45:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:45:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-12-13 21:45:09,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47235387045813587 [2022-12-13 21:45:09,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-12-13 21:45:09,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-12-13 21:45:09,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:09,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-12-13 21:45:09,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,175 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 102 flow. Second operand 3 states and 598 transitions. [2022-12-13 21:45:09,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 236 flow [2022-12-13 21:45:09,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:45:09,177 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 104 flow [2022-12-13 21:45:09,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2022-12-13 21:45:09,177 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -16 predicate places. [2022-12-13 21:45:09,178 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 104 flow [2022-12-13 21:45:09,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:09,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:45:09,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:45:09,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash 23050, now seen corresponding path program 1 times [2022-12-13 21:45:09,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:09,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063379163] [2022-12-13 21:45:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063379163] [2022-12-13 21:45:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063379163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:09,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:09,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:45:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008179277] [2022-12-13 21:45:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:45:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:45:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:45:09,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 422 [2022-12-13 21:45:09,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:09,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 422 [2022-12-13 21:45:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:09,556 INFO L130 PetriNetUnfolder]: 196/447 cut-off events. [2022-12-13 21:45:09,556 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 21:45:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 447 events. 196/447 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2069 event pairs, 195 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 900. Up to 427 conditions per place. [2022-12-13 21:45:09,559 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 35 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-12-13 21:45:09,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 178 flow [2022-12-13 21:45:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:45:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:45:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2022-12-13 21:45:09,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44944707740916273 [2022-12-13 21:45:09,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2022-12-13 21:45:09,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2022-12-13 21:45:09,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:09,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2022-12-13 21:45:09,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,564 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 104 flow. Second operand 3 states and 569 transitions. [2022-12-13 21:45:09,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 178 flow [2022-12-13 21:45:09,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:45:09,566 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 106 flow [2022-12-13 21:45:09,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2022-12-13 21:45:09,567 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -15 predicate places. [2022-12-13 21:45:09,567 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 106 flow [2022-12-13 21:45:09,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:09,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:45:09,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:45:09,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash 715808, now seen corresponding path program 1 times [2022-12-13 21:45:09,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:09,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847479226] [2022-12-13 21:45:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:09,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:09,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847479226] [2022-12-13 21:45:09,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847479226] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:09,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032229965] [2022-12-13 21:45:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:09,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:09,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:09,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:09,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:45:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:09,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:45:09,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:09,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:09,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032229965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:45:09,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:45:09,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 21:45:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615587728] [2022-12-13 21:45:09,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:45:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:45:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:45:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:45:09,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 422 [2022-12-13 21:45:09,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:09,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:09,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 422 [2022-12-13 21:45:09,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:10,098 INFO L130 PetriNetUnfolder]: 197/453 cut-off events. [2022-12-13 21:45:10,098 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:45:10,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 453 events. 197/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2061 event pairs, 195 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 916. Up to 426 conditions per place. [2022-12-13 21:45:10,101 INFO L137 encePairwiseOnDemand]: 416/422 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2022-12-13 21:45:10,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 216 flow [2022-12-13 21:45:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:45:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:45:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1138 transitions. [2022-12-13 21:45:10,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44944707740916273 [2022-12-13 21:45:10,105 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1138 transitions. [2022-12-13 21:45:10,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1138 transitions. [2022-12-13 21:45:10,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:10,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1138 transitions. [2022-12-13 21:45:10,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:10,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:10,114 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:10,114 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 106 flow. Second operand 6 states and 1138 transitions. [2022-12-13 21:45:10,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 216 flow [2022-12-13 21:45:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:45:10,116 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 162 flow [2022-12-13 21:45:10,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2022-12-13 21:45:10,117 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2022-12-13 21:45:10,117 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 162 flow [2022-12-13 21:45:10,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:10,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:10,118 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:45:10,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:45:10,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:10,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash 715869, now seen corresponding path program 1 times [2022-12-13 21:45:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:10,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592031852] [2022-12-13 21:45:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:10,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:10,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592031852] [2022-12-13 21:45:10,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592031852] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:10,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917057754] [2022-12-13 21:45:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:10,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:10,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:10,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:10,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:45:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:10,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 21:45:10,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:10,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:10,805 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 [2022-12-13 21:45:10,821 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:45:10,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:45:10,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:10,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:10,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-12-13 21:45:10,887 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-13 21:45:10,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-12-13 21:45:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:10,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:15,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917057754] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:45:15,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:45:15,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 21:45:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274581462] [2022-12-13 21:45:15,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:45:15,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:45:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:45:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:45:16,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 422 [2022-12-13 21:45:16,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 166.125) internal successors, (1329), 8 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:16,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:16,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 422 [2022-12-13 21:45:16,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:24,926 WARN L233 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 66 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:45:26,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:45:27,898 INFO L130 PetriNetUnfolder]: 196/450 cut-off events. [2022-12-13 21:45:27,899 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 21:45:27,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 450 events. 196/450 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2034 event pairs, 195 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 920. Up to 427 conditions per place. [2022-12-13 21:45:27,900 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 35 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2022-12-13 21:45:27,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 44 transitions, 236 flow [2022-12-13 21:45:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:45:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:45:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1033 transitions. [2022-12-13 21:45:27,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4079778830963665 [2022-12-13 21:45:27,902 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1033 transitions. [2022-12-13 21:45:27,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1033 transitions. [2022-12-13 21:45:27,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:27,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1033 transitions. [2022-12-13 21:45:27,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:27,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:27,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:27,914 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 162 flow. Second operand 6 states and 1033 transitions. [2022-12-13 21:45:27,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 44 transitions, 236 flow [2022-12-13 21:45:27,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 44 transitions, 217 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 21:45:27,916 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 147 flow [2022-12-13 21:45:27,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2022-12-13 21:45:27,917 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2022-12-13 21:45:27,917 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 147 flow [2022-12-13 21:45:27,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.125) internal successors, (1329), 8 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:27,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:27,918 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:45:27,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:45:28,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:28,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:28,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash -147073395, now seen corresponding path program 2 times [2022-12-13 21:45:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:28,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487302052] [2022-12-13 21:45:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:28,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487302052] [2022-12-13 21:45:28,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487302052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:28,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938812399] [2022-12-13 21:45:28,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:45:28,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:28,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:28,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:28,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:45:28,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:45:28,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:45:28,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:45:28,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:28,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:28,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938812399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:45:28,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:45:28,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 21:45:28,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583314054] [2022-12-13 21:45:28,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:45:28,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:45:28,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:28,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:45:28,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:45:28,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 422 [2022-12-13 21:45:28,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 147 flow. Second operand has 13 states, 13 states have (on average 182.07692307692307) internal successors, (2367), 13 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:28,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:28,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 422 [2022-12-13 21:45:28,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:29,113 INFO L130 PetriNetUnfolder]: 197/462 cut-off events. [2022-12-13 21:45:29,113 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-13 21:45:29,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 462 events. 197/462 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2042 event pairs, 195 based on Foata normal form. 6/303 useless extension candidates. Maximal degree in co-relation 950. Up to 426 conditions per place. [2022-12-13 21:45:29,115 INFO L137 encePairwiseOnDemand]: 416/422 looper letters, 40 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2022-12-13 21:45:29,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 317 flow [2022-12-13 21:45:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:45:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:45:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2242 transitions. [2022-12-13 21:45:29,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44273301737756715 [2022-12-13 21:45:29,118 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2242 transitions. [2022-12-13 21:45:29,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2242 transitions. [2022-12-13 21:45:29,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:29,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2242 transitions. [2022-12-13 21:45:29,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 186.83333333333334) internal successors, (2242), 12 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,127 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,127 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 147 flow. Second operand 12 states and 2242 transitions. [2022-12-13 21:45:29,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 317 flow [2022-12-13 21:45:29,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 298 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 21:45:29,129 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 254 flow [2022-12-13 21:45:29,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=254, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2022-12-13 21:45:29,129 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2022-12-13 21:45:29,129 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 254 flow [2022-12-13 21:45:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.07692307692307) internal successors, (2367), 13 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:29,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:29,130 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:45:29,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:45:29,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 21:45:29,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:45:29,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:29,331 INFO L85 PathProgramCache]: Analyzing trace with hash -147073334, now seen corresponding path program 2 times [2022-12-13 21:45:29,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:29,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157992686] [2022-12-13 21:45:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:30,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:30,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157992686] [2022-12-13 21:45:30,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157992686] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:30,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069634388] [2022-12-13 21:45:30,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:45:30,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:30,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:30,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:30,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:45:30,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:45:30,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:45:30,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 21:45:30,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:30,824 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:45:30,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:45:30,828 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 [2022-12-13 21:45:30,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:30,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:30,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-12-13 21:45:30,897 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-13 21:45:30,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 43 treesize of output 49 [2022-12-13 21:45:30,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:30,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:30,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:30,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-12-13 21:45:31,021 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-12-13 21:45:31,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 48 treesize of output 65 [2022-12-13 21:45:31,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:31,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:31,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-12-13 21:45:31,152 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-12-13 21:45:31,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 53 treesize of output 81 [2022-12-13 21:45:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:45:31,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-12-13 21:45:31,337 INFO L321 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2022-12-13 21:45:31,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 97 [2022-12-13 21:45:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:31,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:49,080 WARN L233 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:46:05,548 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:46:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:05,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069634388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:46:05,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:46:05,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 21:46:05,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598900175] [2022-12-13 21:46:05,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:46:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 21:46:05,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 21:46:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=198, Unknown=4, NotChecked=0, Total=272 [2022-12-13 21:46:07,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:10,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:12,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:14,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:16,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:18,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:20,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:21,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:23,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:25,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:27,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:29,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:31,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:33,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:35,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:36,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:38,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:40,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:43,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:45,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:47,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:49,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:51,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:53,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:55,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:46:58,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:00,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:02,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:05,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:07,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:09,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:12,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:14,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:16,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:17,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:19,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:22,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:24,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:26,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:28,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:30,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:32,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:35,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:37,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:39,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:41,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:43,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:45,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:47,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:49,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:50,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:52,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:54,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:56,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:47:59,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:01,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:04,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:06,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:09,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:11,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:13,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:15,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:17,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:19,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:21,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:23,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:25,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:25,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 422 [2022-12-13 21:48:25,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 254 flow. Second operand has 17 states, 17 states have (on average 110.05882352941177) internal successors, (1871), 17 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:48:25,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:48:25,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 422 [2022-12-13 21:48:25,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:48:42,700 WARN L233 SmtUtils]: Spent 14.64s on a formula simplification. DAG size of input: 258 DAG size of output: 242 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:48:44,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:48:59,880 WARN L233 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 179 DAG size of output: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:49:01,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:03,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:18,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:20,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:22,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:28,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:30,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:32,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:34,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 21:49:35,868 INFO L130 PetriNetUnfolder]: 256/560 cut-off events. [2022-12-13 21:49:35,868 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 21:49:35,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 560 events. 256/560 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2565 event pairs, 255 based on Foata normal form. 6/314 useless extension candidates. Maximal degree in co-relation 1149. Up to 551 conditions per place. [2022-12-13 21:49:35,870 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 39 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2022-12-13 21:49:35,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 50 transitions, 348 flow [2022-12-13 21:49:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:49:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:49:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1364 transitions. [2022-12-13 21:49:35,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.2693522906793049 [2022-12-13 21:49:35,873 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1364 transitions. [2022-12-13 21:49:35,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1364 transitions. [2022-12-13 21:49:35,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:49:35,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1364 transitions. [2022-12-13 21:49:35,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.66666666666667) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:35,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:35,879 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:35,879 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 254 flow. Second operand 12 states and 1364 transitions. [2022-12-13 21:49:35,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 50 transitions, 348 flow [2022-12-13 21:49:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 50 transitions, 303 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-12-13 21:49:35,882 INFO L231 Difference]: Finished difference. Result has 76 places, 50 transitions, 225 flow [2022-12-13 21:49:35,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=225, PETRI_PLACES=76, PETRI_TRANSITIONS=50} [2022-12-13 21:49:35,882 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2022-12-13 21:49:35,882 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 50 transitions, 225 flow [2022-12-13 21:49:35,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 110.05882352941177) internal successors, (1871), 17 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:35,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:49:35,883 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 21:49:35,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 21:49:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:36,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:49:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1476600402, now seen corresponding path program 1 times [2022-12-13 21:49:36,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:36,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738712496] [2022-12-13 21:49:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:49:39,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:39,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738712496] [2022-12-13 21:49:39,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738712496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:49:39,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547295826] [2022-12-13 21:49:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:39,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:49:39,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:49:39,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:49:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 21:49:39,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:49:39,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:49:39,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:49:39,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,867 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:39,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:39,878 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:49:39,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 21:49:39,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,910 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:39,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,936 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:39,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,963 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:39,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:39,989 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:39,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:40,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,018 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:40,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:40,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,041 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:40,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:40,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,068 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:40,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,093 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:40,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:49:40,118 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:49:40,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:49:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:49:40,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:49:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:49:45,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547295826] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:49:45,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:49:45,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 21:49:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125062638] [2022-12-13 21:49:45,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:49:45,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:49:45,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:49:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:49:47,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 422 [2022-12-13 21:49:47,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 50 transitions, 225 flow. Second operand has 11 states, 11 states have (on average 176.36363636363637) internal successors, (1940), 11 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:49:47,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 422 [2022-12-13 21:49:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:49:47,384 INFO L130 PetriNetUnfolder]: 196/453 cut-off events. [2022-12-13 21:49:47,384 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 21:49:47,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 453 events. 196/453 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2056 event pairs, 128 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 901. Up to 295 conditions per place. [2022-12-13 21:49:47,388 INFO L137 encePairwiseOnDemand]: 416/422 looper letters, 73 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2022-12-13 21:49:47,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 403 flow [2022-12-13 21:49:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:49:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:49:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2022-12-13 21:49:47,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4555687203791469 [2022-12-13 21:49:47,392 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2022-12-13 21:49:47,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2022-12-13 21:49:47,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:49:47,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2022-12-13 21:49:47,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 422.0) internal successors, (2110), 5 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,399 INFO L175 Difference]: Start difference. First operand has 76 places, 50 transitions, 225 flow. Second operand 4 states and 769 transitions. [2022-12-13 21:49:47,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 403 flow [2022-12-13 21:49:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 373 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-12-13 21:49:47,403 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 159 flow [2022-12-13 21:49:47,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2022-12-13 21:49:47,404 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2022-12-13 21:49:47,404 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 159 flow [2022-12-13 21:49:47,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 176.36363636363637) internal successors, (1940), 11 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:49:47,405 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 21:49:47,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 21:49:47,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:47,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:49:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1476600342, now seen corresponding path program 3 times [2022-12-13 21:49:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568835314] [2022-12-13 21:49:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:48,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:48,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568835314] [2022-12-13 21:49:48,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568835314] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:49:48,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763693011] [2022-12-13 21:49:48,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:49:48,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:48,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:49:48,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:49:48,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:51:49,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 21:51:49,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:51:49,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:51:49,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:51:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:49,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:51:49,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763693011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:49,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:51:49,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 12 [2022-12-13 21:51:49,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090194663] [2022-12-13 21:51:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:51:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:51:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:51:49,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 422 [2022-12-13 21:51:49,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 159 flow. Second operand has 13 states, 13 states have (on average 181.92307692307693) internal successors, (2365), 13 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:49,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:51:49,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 422 [2022-12-13 21:51:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:51:49,997 INFO L130 PetriNetUnfolder]: 195/452 cut-off events. [2022-12-13 21:51:49,997 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2022-12-13 21:51:49,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 452 events. 195/452 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2043 event pairs, 195 based on Foata normal form. 2/291 useless extension candidates. Maximal degree in co-relation 948. Up to 422 conditions per place. [2022-12-13 21:51:49,999 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 31 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2022-12-13 21:51:49,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 232 flow [2022-12-13 21:51:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:51:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 21:51:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2397 transitions. [2022-12-13 21:51:50,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43693036820998904 [2022-12-13 21:51:50,002 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2397 transitions. [2022-12-13 21:51:50,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2397 transitions. [2022-12-13 21:51:50,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:51:50,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2397 transitions. [2022-12-13 21:51:50,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 184.3846153846154) internal successors, (2397), 13 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:50,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 422.0) internal successors, (5908), 14 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:50,010 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 422.0) internal successors, (5908), 14 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:50,010 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 159 flow. Second operand 13 states and 2397 transitions. [2022-12-13 21:51:50,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 232 flow [2022-12-13 21:51:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 46 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:51:50,011 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 160 flow [2022-12-13 21:51:50,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=160, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2022-12-13 21:51:50,012 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-12-13 21:51:50,012 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 160 flow [2022-12-13 21:51:50,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.92307692307693) internal successors, (2365), 13 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:50,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:51:50,013 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2022-12-13 21:51:50,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:51:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 21:51:50,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:51:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:50,215 INFO L85 PathProgramCache]: Analyzing trace with hash -347130059, now seen corresponding path program 1 times [2022-12-13 21:51:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:50,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181426555] [2022-12-13 21:51:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:50,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181426555] [2022-12-13 21:51:52,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181426555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:51:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014202095] [2022-12-13 21:51:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:51:52,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:51:52,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:51:52,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:51:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:52,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 21:51:52,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:51:52,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:51:52,712 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-13 21:51:52,712 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 2 case distinctions, treesize of input 32 treesize of output 40 [2022-12-13 21:51:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:51:52,724 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:51:52,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-12-13 21:51:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:52,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:51:52,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:51:52,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-12-13 21:51:52,821 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:51:52,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2022-12-13 21:51:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:53,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014202095] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:51:53,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:51:53,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-12-13 21:51:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696064229] [2022-12-13 21:51:53,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:51:53,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 21:51:53,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 21:51:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 21:51:54,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 422 [2022-12-13 21:51:54,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 160 flow. Second operand has 35 states, 35 states have (on average 172.28571428571428) internal successors, (6030), 35 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:54,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:51:54,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 422 [2022-12-13 21:51:54,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:51:56,495 INFO L130 PetriNetUnfolder]: 321/769 cut-off events. [2022-12-13 21:51:56,495 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 21:51:56,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 769 events. 321/769 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4677 event pairs, 28 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 1509. Up to 367 conditions per place. [2022-12-13 21:51:56,497 INFO L137 encePairwiseOnDemand]: 417/422 looper letters, 64 selfloop transitions, 13 changer transitions 0/81 dead transitions. [2022-12-13 21:51:56,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 388 flow [2022-12-13 21:51:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:51:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 21:51:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2472 transitions. [2022-12-13 21:51:56,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4184157075152336 [2022-12-13 21:51:56,501 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2472 transitions. [2022-12-13 21:51:56,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2472 transitions. [2022-12-13 21:51:56,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:51:56,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2472 transitions. [2022-12-13 21:51:56,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 176.57142857142858) internal successors, (2472), 14 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:56,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 422.0) internal successors, (6330), 15 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:56,508 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 422.0) internal successors, (6330), 15 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:56,508 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 160 flow. Second operand 14 states and 2472 transitions. [2022-12-13 21:51:56,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 388 flow [2022-12-13 21:51:56,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 367 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-13 21:51:56,510 INFO L231 Difference]: Finished difference. Result has 76 places, 47 transitions, 177 flow [2022-12-13 21:51:56,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=47} [2022-12-13 21:51:56,510 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2022-12-13 21:51:56,510 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 47 transitions, 177 flow [2022-12-13 21:51:56,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 172.28571428571428) internal successors, (6030), 35 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:56,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:51:56,511 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:56,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:51:56,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:51:56,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:51:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2123940179, now seen corresponding path program 1 times [2022-12-13 21:51:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614156994] [2022-12-13 21:51:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:56,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:51:57,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:57,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614156994] [2022-12-13 21:51:57,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614156994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:57,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:57,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:51:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538288212] [2022-12-13 21:51:57,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:57,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:51:57,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:51:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:51:57,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 422 [2022-12-13 21:51:57,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 47 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:51:57,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 422 [2022-12-13 21:51:57,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:51:57,342 INFO L130 PetriNetUnfolder]: 387/918 cut-off events. [2022-12-13 21:51:57,342 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 21:51:57,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 918 events. 387/918 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5697 event pairs, 120 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 1907. Up to 612 conditions per place. [2022-12-13 21:51:57,345 INFO L137 encePairwiseOnDemand]: 414/422 looper letters, 62 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2022-12-13 21:51:57,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 364 flow [2022-12-13 21:51:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:51:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:51:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-12-13 21:51:57,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47235387045813587 [2022-12-13 21:51:57,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-12-13 21:51:57,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-12-13 21:51:57,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:51:57,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-12-13 21:51:57,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,349 INFO L175 Difference]: Start difference. First operand has 76 places, 47 transitions, 177 flow. Second operand 3 states and 598 transitions. [2022-12-13 21:51:57,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 364 flow [2022-12-13 21:51:57,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 343 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-13 21:51:57,350 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 205 flow [2022-12-13 21:51:57,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2022-12-13 21:51:57,350 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2022-12-13 21:51:57,350 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 205 flow [2022-12-13 21:51:57,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:51:57,351 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:57,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:51:57,351 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:51:57,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2123940215, now seen corresponding path program 1 times [2022-12-13 21:51:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:57,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357314740] [2022-12-13 21:51:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:57,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 21:51:57,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:57,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357314740] [2022-12-13 21:51:57,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357314740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:57,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:57,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:51:57,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865269452] [2022-12-13 21:51:57,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:57,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:51:57,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:51:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:51:57,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 422 [2022-12-13 21:51:57,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:51:57,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 422 [2022-12-13 21:51:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:51:57,914 INFO L130 PetriNetUnfolder]: 358/849 cut-off events. [2022-12-13 21:51:57,914 INFO L131 PetriNetUnfolder]: For 250/252 co-relation queries the response was YES. [2022-12-13 21:51:57,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 849 events. 358/849 cut-off events. For 250/252 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5091 event pairs, 218 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 1966. Up to 770 conditions per place. [2022-12-13 21:51:57,917 INFO L137 encePairwiseOnDemand]: 420/422 looper letters, 54 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 21:51:57,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 323 flow [2022-12-13 21:51:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:51:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:51:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2022-12-13 21:51:57,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4636650868878357 [2022-12-13 21:51:57,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2022-12-13 21:51:57,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2022-12-13 21:51:57,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:51:57,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2022-12-13 21:51:57,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,920 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 205 flow. Second operand 3 states and 587 transitions. [2022-12-13 21:51:57,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 323 flow [2022-12-13 21:51:57,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:51:57,922 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 187 flow [2022-12-13 21:51:57,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2022-12-13 21:51:57,923 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2022-12-13 21:51:57,923 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 187 flow [2022-12-13 21:51:57,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:57,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:51:57,923 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:57,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:51:57,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2022-12-13 21:51:57,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2123870272, now seen corresponding path program 1 times [2022-12-13 21:51:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:57,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308210471] [2022-12-13 21:51:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:52:27,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:52:27,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308210471] [2022-12-13 21:52:27,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308210471] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:52:27,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992404644] [2022-12-13 21:52:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:27,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:52:27,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:52:27,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:52:27,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:52:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:29,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 541 conjunts are in the unsatisfiable core [2022-12-13 21:52:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:52:29,453 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:52:29,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 21:52:29,477 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:52:29,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:52:29,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 19 [2022-12-13 21:52:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-12-13 21:52:29,613 INFO L321 Elim1Store]: treesize reduction 83, result has 36.2 percent of original size [2022-12-13 21:52:29,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 52 treesize of output 84 [2022-12-13 21:52:29,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:52:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,741 INFO L321 Elim1Store]: treesize reduction 20, result has 61.5 percent of original size [2022-12-13 21:52:29,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 134 [2022-12-13 21:52:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,765 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:52:29,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-12-13 21:52:29,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:52:29,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-13 21:52:29,830 INFO L321 Elim1Store]: treesize reduction 124, result has 20.5 percent of original size [2022-12-13 21:52:29,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 74 [2022-12-13 21:52:29,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2022-12-13 21:52:29,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:29,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2022-12-13 21:52:29,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 18 [2022-12-13 21:52:30,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 609 treesize of output 437 [2022-12-13 21:52:30,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:30,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:30,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:30,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:30,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:30,665 INFO L321 Elim1Store]: treesize reduction 94, result has 36.9 percent of original size [2022-12-13 21:52:30,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 333 treesize of output 336 [2022-12-13 21:52:31,290 INFO L321 Elim1Store]: treesize reduction 719, result has 24.7 percent of original size [2022-12-13 21:52:31,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 271 treesize of output 468 [2022-12-13 21:52:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,356 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:52:31,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 238 treesize of output 241 [2022-12-13 21:52:31,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2022-12-13 21:52:31,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 72 [2022-12-13 21:52:31,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 135 [2022-12-13 21:52:31,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,807 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:52:31,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2022-12-13 21:52:31,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 95 [2022-12-13 21:52:31,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:31,990 INFO L321 Elim1Store]: treesize reduction 476, result has 26.8 percent of original size [2022-12-13 21:52:31,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 114 treesize of output 237 [2022-12-13 21:52:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 232 [2022-12-13 21:52:32,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,449 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:52:32,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2022-12-13 21:52:32,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 149 [2022-12-13 21:52:32,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:32,809 INFO L321 Elim1Store]: treesize reduction 618, result has 27.1 percent of original size [2022-12-13 21:52:32,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 299 [2022-12-13 21:52:33,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 466 treesize of output 357 [2022-12-13 21:52:33,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,505 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 21:52:33,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 18 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 64 [2022-12-13 21:52:33,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:33,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 355 treesize of output 219 [2022-12-13 21:52:33,827 INFO L321 Elim1Store]: treesize reduction 720, result has 18.0 percent of original size [2022-12-13 21:52:33,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 43 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 135 treesize of output 230 [2022-12-13 21:52:34,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 561 treesize of output 435 [2022-12-13 21:52:34,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 425 treesize of output 264 [2022-12-13 21:52:34,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:34,818 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:52:34,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 18 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 70 [2022-12-13 21:52:35,458 INFO L321 Elim1Store]: treesize reduction 1154, result has 24.8 percent of original size [2022-12-13 21:52:35,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 14 select indices, 14 select index equivalence classes, 55 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 50 case distinctions, treesize of input 177 treesize of output 471 [2022-12-13 21:52:36,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:36,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:36,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:36,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:36,998 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:52:36,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 839 treesize of output 662 [2022-12-13 21:52:37,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 357 [2022-12-13 21:52:37,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:37,260 INFO L321 Elim1Store]: treesize reduction 145, result has 30.3 percent of original size [2022-12-13 21:52:37,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 17 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 141 [2022-12-13 21:52:37,758 INFO L321 Elim1Store]: treesize reduction 1204, result has 18.8 percent of original size [2022-12-13 21:52:37,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 80 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 40 case distinctions, treesize of input 204 treesize of output 394 [2022-12-13 21:52:56,553 WARN L233 SmtUtils]: Spent 11.92s on a formula simplification. DAG size of input: 297 DAG size of output: 296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:52:57,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1530 treesize of output 1251 [2022-12-13 21:52:57,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 1241 treesize of output 816 [2022-12-13 21:52:57,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:52:57,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:53:01,774 INFO L321 Elim1Store]: treesize reduction 3575, result has 18.9 percent of original size [2022-12-13 21:53:01,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 24 select indices, 24 select index equivalence classes, 24 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 1201 treesize of output 1921 [2022-12-13 21:53:01,945 INFO L321 Elim1Store]: treesize reduction 41, result has 10.9 percent of original size [2022-12-13 21:53:01,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 22 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 107 [2022-12-13 21:56:08,721 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-13 21:56:08,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-12-13 21:56:08,722 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 21:56:08,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 21:56:08,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 21:56:08,925 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 54 more [2022-12-13 21:56:08,933 INFO L158 Benchmark]: Toolchain (without parser) took 690368.23ms. Allocated memory was 151.0MB in the beginning and 1.1GB in the end (delta: 956.3MB). Free memory was 106.6MB in the beginning and 855.0MB in the end (delta: -748.4MB). Peak memory consumption was 735.1MB. Max. memory is 16.1GB. [2022-12-13 21:56:08,934 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:56:08,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.33ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 106.6MB in the beginning and 147.5MB in the end (delta: -40.9MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2022-12-13 21:56:08,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.97ms. Allocated memory is still 182.5MB. Free memory was 147.5MB in the beginning and 145.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:56:08,934 INFO L158 Benchmark]: Boogie Preprocessor took 23.37ms. Allocated memory is still 182.5MB. Free memory was 145.1MB in the beginning and 143.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:56:08,935 INFO L158 Benchmark]: RCFGBuilder took 451.20ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 118.1MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 21:56:08,935 INFO L158 Benchmark]: TraceAbstraction took 689173.36ms. Allocated memory was 182.5MB in the beginning and 1.1GB in the end (delta: 924.8MB). Free memory was 118.1MB in the beginning and 855.0MB in the end (delta: -736.9MB). Peak memory consumption was 714.5MB. Max. memory is 16.1GB. [2022-12-13 21:56:08,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.33ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 106.6MB in the beginning and 147.5MB in the end (delta: -40.9MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.97ms. Allocated memory is still 182.5MB. Free memory was 147.5MB in the beginning and 145.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.37ms. Allocated memory is still 182.5MB. Free memory was 145.1MB in the beginning and 143.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.20ms. Allocated memory is still 182.5MB. Free memory was 142.1MB in the beginning and 118.1MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 689173.36ms. Allocated memory was 182.5MB in the beginning and 1.1GB in the end (delta: 924.8MB). Free memory was 118.1MB in the beginning and 855.0MB in the end (delta: -736.9MB). Peak memory consumption was 714.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.3s, 189 PlacesBefore, 63 PlacesAfterwards, 189 TransitionsBefore, 60 TransitionsAfterwards, 3136 CoEnabledTransitionPairs, 7 FixpointIterations, 143 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 232 TotalNumberOfCompositions, 10797 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4223, independent: 3794, independent conditional: 0, independent unconditional: 3794, dependent: 429, dependent conditional: 0, dependent unconditional: 429, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1706, independent: 1630, independent conditional: 0, independent unconditional: 1630, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4223, independent: 2164, independent conditional: 0, independent unconditional: 2164, dependent: 353, dependent conditional: 0, dependent unconditional: 353, unknown: 1706, unknown conditional: 0, unknown unconditional: 1706] , Statistics on independence cache: Total cache size (in pairs): 197, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:56:10,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:56:10,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:56:10,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:56:10,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:56:10,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:56:10,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:56:10,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:56:10,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:56:10,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:56:10,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:56:10,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:56:10,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:56:10,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:56:10,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:56:10,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:56:10,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:56:10,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:56:10,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:56:10,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:56:10,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:56:10,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:56:10,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:56:10,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:56:10,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:56:10,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:56:10,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:56:10,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:56:10,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:56:10,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:56:10,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:56:10,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:56:10,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:56:10,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:56:10,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:56:10,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:56:10,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:56:10,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:56:10,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:56:10,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:56:10,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:56:10,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:56:10,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:56:10,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:56:10,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:56:10,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:56:10,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:56:10,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:56:10,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:56:10,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:56:10,405 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:56:10,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:56:10,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:56:10,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:56:10,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:56:10,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:56:10,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:56:10,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:56:10,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:56:10,407 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:56:10,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:56:10,408 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:56:10,408 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:56:10,408 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_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa [2022-12-13 21:56:10,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:56:10,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:56:10,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:56:10,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:56:10,637 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:56:10,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2022-12-13 21:56:13,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:56:13,454 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:56:13,454 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2022-12-13 21:56:13,465 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data/7e50ff5d8/216e63ccdbd548198cae393140a8bf10/FLAG9ffa284d9 [2022-12-13 21:56:13,477 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/data/7e50ff5d8/216e63ccdbd548198cae393140a8bf10 [2022-12-13 21:56:13,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:56:13,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:56:13,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:56:13,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:56:13,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:56:13,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:56:13" (1/1) ... [2022-12-13 21:56:13,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3342d13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:13, skipping insertion in model container [2022-12-13 21:56:13,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:56:13" (1/1) ... [2022-12-13 21:56:13,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:56:13,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:56:13,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:56:13,946 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:56:13,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:56:14,055 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:56:14,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14 WrapperNode [2022-12-13 21:56:14,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:56:14,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:56:14,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:56:14,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:56:14,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,094 INFO L138 Inliner]: procedures = 372, calls = 35, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 118 [2022-12-13 21:56:14,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:56:14,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:56:14,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:56:14,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:56:14,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:56:14,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:56:14,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:56:14,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:56:14,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (1/1) ... [2022-12-13 21:56:14,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:56:14,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:56:14,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:56:14,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c41ac9-0093-454c-8d15-c13361be5c7c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 21:56:14,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:56:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:56:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:56:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:56:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 21:56:14,196 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 21:56:14,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:56:14,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:56:14,197 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:56:14,327 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:56:14,329 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:56:14,767 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:56:14,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:56:14,775 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:56:14,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:56:14 BoogieIcfgContainer [2022-12-13 21:56:14,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:56:14,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:56:14,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:56:14,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:56:14,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:56:13" (1/3) ... [2022-12-13 21:56:14,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c1675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:56:14, skipping insertion in model container [2022-12-13 21:56:14,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:56:14" (2/3) ... [2022-12-13 21:56:14,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c1675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:56:14, skipping insertion in model container [2022-12-13 21:56:14,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:56:14" (3/3) ... [2022-12-13 21:56:14,785 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_09-arraylist.i [2022-12-13 21:56:14,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:56:14,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2022-12-13 21:56:14,800 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:56:14,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 21:56:14,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 189 transitions, 383 flow [2022-12-13 21:56:14,938 INFO L130 PetriNetUnfolder]: 4/188 cut-off events. [2022-12-13 21:56:14,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:56:14,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 188 events. 4/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 411 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 21:56:14,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 189 transitions, 383 flow [2022-12-13 21:56:14,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 188 transitions, 379 flow [2022-12-13 21:56:14,952 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:56:14,963 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 188 transitions, 379 flow [2022-12-13 21:56:14,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 188 transitions, 379 flow [2022-12-13 21:56:14,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 188 transitions, 379 flow [2022-12-13 21:56:14,993 INFO L130 PetriNetUnfolder]: 4/188 cut-off events. [2022-12-13 21:56:14,993 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:56:14,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 188 events. 4/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 412 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 21:56:14,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2022-12-13 21:57:33,031 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 105 DAG size of output: 101 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 21:57:43,015 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 105 DAG size of output: 97 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)