./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP --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 e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:01:03,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:01:03,950 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 23:01:03,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:01:03,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:01:04,007 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:01:04,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:01:04,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:01:04,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:01:04,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:01:04,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:01:04,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:01:04,023 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:01:04,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:01:04,026 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:01:04,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:01:04,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:01:04,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:01:04,028 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:01:04,028 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:01:04,029 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:01:04,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:01:04,030 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:01:04,030 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:01:04,031 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:01:04,031 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:01:04,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:01:04,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:01:04,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:01:04,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:04,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:01:04,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:01:04,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:01:04,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:01:04,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:01:04,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:01:04,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:01:04,037 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:01:04,037 INFO L153 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_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a3fff277216174585e9d802eee36c2b619da26d56e48ed5261f2ab62942b7a [2023-11-06 23:01:04,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:01:04,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:01:04,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:01:04,377 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:01:04,378 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:01:04,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2023-11-06 23:01:07,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:01:07,965 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:01:07,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2023-11-06 23:01:08,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/data/c8a776ce7/1c11b1eb837e480bb0d4719b042c68c0/FLAGc7baac2c6 [2023-11-06 23:01:08,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/data/c8a776ce7/1c11b1eb837e480bb0d4719b042c68c0 [2023-11-06 23:01:08,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:01:08,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:01:08,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:08,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:01:08,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:01:08,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:08" (1/1) ... [2023-11-06 23:01:08,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796c4fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:08, skipping insertion in model container [2023-11-06 23:01:08,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:08" (1/1) ... [2023-11-06 23:01:08,146 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:01:08,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:08,971 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:01:09,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:09,161 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:01:09,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09 WrapperNode [2023-11-06 23:01:09,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:09,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:09,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:01:09,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:01:09,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,254 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 125 [2023-11-06 23:01:09,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:09,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:01:09,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:01:09,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:01:09,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:01:09,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:01:09,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:01:09,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:01:09,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (1/1) ... [2023-11-06 23:01:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:09,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:01:09,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:01:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:01:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:01:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:01:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:01:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:01:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:01:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:01:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:01:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:01:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 23:01:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 23:01:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:01:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:01:09,486 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:01:09,684 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:01:09,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:01:10,174 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:01:10,187 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:01:10,187 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 23:01:10,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:10 BoogieIcfgContainer [2023-11-06 23:01:10,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:01:10,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:01:10,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:01:10,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:01:10,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:01:08" (1/3) ... [2023-11-06 23:01:10,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291339e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:10, skipping insertion in model container [2023-11-06 23:01:10,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:09" (2/3) ... [2023-11-06 23:01:10,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291339e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:10, skipping insertion in model container [2023-11-06 23:01:10,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:10" (3/3) ... [2023-11-06 23:01:10,203 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2023-11-06 23:01:10,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:01:10,223 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-11-06 23:01:10,223 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:01:10,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:01:10,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 192 transitions, 388 flow [2023-11-06 23:01:10,459 INFO L124 PetriNetUnfolderBase]: 6/191 cut-off events. [2023-11-06 23:01:10,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:10,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 191 events. 6/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 411 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-06 23:01:10,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 192 transitions, 388 flow [2023-11-06 23:01:10,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 191 transitions, 385 flow [2023-11-06 23:01:10,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:01:10,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 191 transitions, 385 flow [2023-11-06 23:01:10,516 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 191 transitions, 385 flow [2023-11-06 23:01:10,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 191 transitions, 385 flow [2023-11-06 23:01:10,594 INFO L124 PetriNetUnfolderBase]: 6/191 cut-off events. [2023-11-06 23:01:10,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:10,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 191 events. 6/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 412 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-06 23:01:10,599 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2023-11-06 23:01:34,049 WARN L293 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 179 DAG size of output: 169 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:01:42,162 INFO L134 LiptonReduction]: Checked pairs total: 10855 [2023-11-06 23:01:42,163 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-11-06 23:01:42,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:01:42,189 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;@13655809, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:01:42,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-11-06 23:01:42,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:01:42,201 INFO L124 PetriNetUnfolderBase]: 2/5 cut-off events. [2023-11-06 23:01:42,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:42,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:42,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:01:42,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:01:42,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash 691988, now seen corresponding path program 1 times [2023-11-06 23:01:42,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:42,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418204035] [2023-11-06 23:01:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:42,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:42,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418204035] [2023-11-06 23:01:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418204035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:42,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:01:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099416811] [2023-11-06 23:01:42,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:42,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:42,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 427 [2023-11-06 23:01:42,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:42,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:42,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 427 [2023-11-06 23:01:42,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:42,934 INFO L124 PetriNetUnfolderBase]: 104/288 cut-off events. [2023-11-06 23:01:42,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:42,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 288 events. 104/288 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1352 event pairs, 102 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 504. Up to 238 conditions per place. [2023-11-06 23:01:42,939 INFO L140 encePairwiseOnDemand]: 406/427 looper letters, 32 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-06 23:01:42,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 161 flow [2023-11-06 23:01:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2023-11-06 23:01:42,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652615144418423 [2023-11-06 23:01:42,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2023-11-06 23:01:42,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2023-11-06 23:01:42,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:42,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2023-11-06 23:01:42,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:42,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:42,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:42,996 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 127 flow. Second operand 3 states and 596 transitions. [2023-11-06 23:01:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 161 flow [2023-11-06 23:01:43,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:43,004 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 102 flow [2023-11-06 23:01:43,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-06 23:01:43,011 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -16 predicate places. [2023-11-06 23:01:43,012 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 102 flow [2023-11-06 23:01:43,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:01:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:01:43,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:01:43,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash 21385201, now seen corresponding path program 1 times [2023-11-06 23:01:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:43,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047744274] [2023-11-06 23:01:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:43,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:43,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047744274] [2023-11-06 23:01:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047744274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61092644] [2023-11-06 23:01:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:43,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:43,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:43,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:43,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:01:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:43,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:01:43,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:43,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:01:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61092644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:43,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:01:43,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 23:01:43,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888108703] [2023-11-06 23:01:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:43,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:43,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:43,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 427 [2023-11-06 23:01:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:43,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 427 [2023-11-06 23:01:43,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:43,604 INFO L124 PetriNetUnfolderBase]: 104/291 cut-off events. [2023-11-06 23:01:43,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:01:43,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 291 events. 104/291 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1346 event pairs, 102 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 532. Up to 239 conditions per place. [2023-11-06 23:01:43,607 INFO L140 encePairwiseOnDemand]: 422/427 looper letters, 35 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-06 23:01:43,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 182 flow [2023-11-06 23:01:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:01:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2023-11-06 23:01:43,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45433255269320844 [2023-11-06 23:01:43,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2023-11-06 23:01:43,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2023-11-06 23:01:43,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:43,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2023-11-06 23:01:43,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,619 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 102 flow. Second operand 3 states and 582 transitions. [2023-11-06 23:01:43,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 182 flow [2023-11-06 23:01:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 178 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:43,622 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 114 flow [2023-11-06 23:01:43,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 23:01:43,623 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-11-06 23:01:43,623 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 114 flow [2023-11-06 23:01:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:43,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:43,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 23:01:43,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:43,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 23:01:43,835 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)] === [2023-11-06 23:01:43,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash 21385247, now seen corresponding path program 1 times [2023-11-06 23:01:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:43,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046078327] [2023-11-06 23:01:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046078327] [2023-11-06 23:01:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046078327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328002237] [2023-11-06 23:01:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:44,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:44,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:44,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:01:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:44,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:01:44,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:44,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:01:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:44,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328002237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:01:44,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:01:44,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:01:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243377824] [2023-11-06 23:01:44,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:01:44,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:01:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:01:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:01:44,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 427 [2023-11-06 23:01:44,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 181.28571428571428) internal successors, (1269), 7 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:44,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:44,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 427 [2023-11-06 23:01:44,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:44,645 INFO L124 PetriNetUnfolderBase]: 104/294 cut-off events. [2023-11-06 23:01:44,645 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 23:01:44,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 294 events. 104/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1358 event pairs, 102 based on Foata normal form. 3/211 useless extension candidates. Maximal degree in co-relation 532. Up to 241 conditions per place. [2023-11-06 23:01:44,648 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 33 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-11-06 23:01:44,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 202 flow [2023-11-06 23:01:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:01:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:01:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1120 transitions. [2023-11-06 23:01:44,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371584699453552 [2023-11-06 23:01:44,654 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1120 transitions. [2023-11-06 23:01:44,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1120 transitions. [2023-11-06 23:01:44,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:44,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1120 transitions. [2023-11-06 23:01:44,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:44,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:44,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:44,668 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 114 flow. Second operand 6 states and 1120 transitions. [2023-11-06 23:01:44,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 202 flow [2023-11-06 23:01:44,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:44,671 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 148 flow [2023-11-06 23:01:44,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-06 23:01:44,672 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-11-06 23:01:44,672 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 148 flow [2023-11-06 23:01:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.28571428571428) internal successors, (1269), 7 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:44,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:44,674 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 23:01:44,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:44,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:01:44,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1365401218, now seen corresponding path program 2 times [2023-11-06 23:01:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604634977] [2023-11-06 23:01:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:45,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604634977] [2023-11-06 23:01:45,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604634977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:45,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631227631] [2023-11-06 23:01:45,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:01:45,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:45,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:45,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:45,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:01:45,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:01:45,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:01:45,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 23:01:45,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:45,335 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 23:01:45,336 INFO L351 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 19 treesize of output 16 [2023-11-06 23:01:45,348 INFO L351 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 14 treesize of output 9 [2023-11-06 23:01:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:01:45,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:01:45,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631227631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:45,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:01:45,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-06 23:01:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488336438] [2023-11-06 23:01:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:45,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:45,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:01:45,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 427 [2023-11-06 23:01:45,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:45,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 427 [2023-11-06 23:01:45,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:45,950 INFO L124 PetriNetUnfolderBase]: 99/285 cut-off events. [2023-11-06 23:01:45,950 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:01:45,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 285 events. 99/285 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 65 based on Foata normal form. 18/225 useless extension candidates. Maximal degree in co-relation 516. Up to 161 conditions per place. [2023-11-06 23:01:45,954 INFO L140 encePairwiseOnDemand]: 419/427 looper letters, 49 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-11-06 23:01:45,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 282 flow [2023-11-06 23:01:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:01:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 750 transitions. [2023-11-06 23:01:45,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43911007025761123 [2023-11-06 23:01:45,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 750 transitions. [2023-11-06 23:01:45,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 750 transitions. [2023-11-06 23:01:45,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:45,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 750 transitions. [2023-11-06 23:01:45,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 427.0) internal successors, (2135), 5 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,971 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 148 flow. Second operand 4 states and 750 transitions. [2023-11-06 23:01:45,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 282 flow [2023-11-06 23:01:45,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 266 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-06 23:01:45,976 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 146 flow [2023-11-06 23:01:45,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-11-06 23:01:45,977 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2023-11-06 23:01:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 146 flow [2023-11-06 23:01:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:45,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:45,979 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 23:01:45,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 23:01:46,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:46,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:01:46,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash -622233615, now seen corresponding path program 1 times [2023-11-06 23:01:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650958745] [2023-11-06 23:01:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:01:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650958745] [2023-11-06 23:01:46,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650958745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:46,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872327788] [2023-11-06 23:01:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:46,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:46,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:46,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:01:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:46,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:01:46,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:46,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:01:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:01:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872327788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:01:46,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:01:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 14 [2023-11-06 23:01:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714919186] [2023-11-06 23:01:46,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:01:46,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:01:46,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:46,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:01:46,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:01:46,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 427 [2023-11-06 23:01:46,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 146 flow. Second operand has 14 states, 14 states have (on average 177.35714285714286) internal successors, (2483), 14 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:46,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:01:46,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 427 [2023-11-06 23:01:46,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:01:47,298 INFO L124 PetriNetUnfolderBase]: 99/285 cut-off events. [2023-11-06 23:01:47,298 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-06 23:01:47,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 285 events. 99/285 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1258 event pairs, 97 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 554. Up to 227 conditions per place. [2023-11-06 23:01:47,302 INFO L140 encePairwiseOnDemand]: 420/427 looper letters, 31 selfloop transitions, 14 changer transitions 0/55 dead transitions. [2023-11-06 23:01:47,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 55 transitions, 280 flow [2023-11-06 23:01:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:01:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 23:01:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2518 transitions. [2023-11-06 23:01:47,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212111073937772 [2023-11-06 23:01:47,313 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2518 transitions. [2023-11-06 23:01:47,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2518 transitions. [2023-11-06 23:01:47,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:01:47,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2518 transitions. [2023-11-06 23:01:47,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 179.85714285714286) internal successors, (2518), 14 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:47,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 427.0) internal successors, (6405), 15 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:47,359 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 427.0) internal successors, (6405), 15 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:47,359 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 146 flow. Second operand 14 states and 2518 transitions. [2023-11-06 23:01:47,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 55 transitions, 280 flow [2023-11-06 23:01:47,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:01:47,364 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 218 flow [2023-11-06 23:01:47,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=218, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2023-11-06 23:01:47,366 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2023-11-06 23:01:47,366 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 218 flow [2023-11-06 23:01:47,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 177.35714285714286) internal successors, (2483), 14 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:47,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:01:47,368 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-11-06 23:01:47,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:47,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:47,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:01:47,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1666307777, now seen corresponding path program 1 times [2023-11-06 23:01:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736267966] [2023-11-06 23:01:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:01:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736267966] [2023-11-06 23:01:48,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736267966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646609242] [2023-11-06 23:01:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:48,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:48,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:48,346 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:48,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:01:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:48,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 23:01:48,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:48,715 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-06 23:01:48,716 INFO L351 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 19 treesize of output 16 [2023-11-06 23:01:48,727 INFO L351 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 14 treesize of output 9 [2023-11-06 23:01:48,802 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:01:48,803 INFO L351 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 23 treesize of output 16 [2023-11-06 23:01:48,809 INFO L351 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 14 treesize of output 9 [2023-11-06 23:01:48,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:48,841 INFO L322 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-06 23:01:48,842 INFO L351 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 3 case distinctions, treesize of input 49 treesize of output 1 [2023-11-06 23:01:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:01:48,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:01:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:01:50,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646609242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:01:50,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:01:50,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 23:01:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829965874] [2023-11-06 23:01:50,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:01:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:01:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:01:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:01:53,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:01:55,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:01:59,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:02:02,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 23:02:04,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 427 [2023-11-06 23:02:04,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 218 flow. Second operand has 11 states, 11 states have (on average 164.36363636363637) internal successors, (1808), 11 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:04,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:04,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 427 [2023-11-06 23:02:04,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:05,417 INFO L124 PetriNetUnfolderBase]: 115/333 cut-off events. [2023-11-06 23:02:05,418 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 23:02:05,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 333 events. 115/333 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1491 event pairs, 81 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 620. Up to 197 conditions per place. [2023-11-06 23:02:05,421 INFO L140 encePairwiseOnDemand]: 419/427 looper letters, 52 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2023-11-06 23:02:05,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 366 flow [2023-11-06 23:02:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1030 transitions. [2023-11-06 23:02:05,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020296643247463 [2023-11-06 23:02:05,428 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1030 transitions. [2023-11-06 23:02:05,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1030 transitions. [2023-11-06 23:02:05,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:05,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1030 transitions. [2023-11-06 23:02:05,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:05,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:05,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:05,441 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 218 flow. Second operand 6 states and 1030 transitions. [2023-11-06 23:02:05,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 366 flow [2023-11-06 23:02:05,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 292 flow, removed 26 selfloop flow, removed 11 redundant places. [2023-11-06 23:02:05,449 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 156 flow [2023-11-06 23:02:05,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-11-06 23:02:05,452 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-11-06 23:02:05,453 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 156 flow [2023-11-06 23:02:05,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 164.36363636363637) internal successors, (1808), 11 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:05,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:05,454 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1] [2023-11-06 23:02:05,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:05,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:05,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:02:05,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash -115931948, now seen corresponding path program 2 times [2023-11-06 23:02:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377443569] [2023-11-06 23:02:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:02:05,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377443569] [2023-11-06 23:02:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377443569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:05,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760997573] [2023-11-06 23:02:05,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:02:05,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:05,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:05,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:05,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:02:06,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:02:06,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:06,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:02:06,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:02:06,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:02:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760997573] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:06,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:06,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-06 23:02:06,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948076163] [2023-11-06 23:02:06,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:06,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:02:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:02:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:02:06,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 427 [2023-11-06 23:02:06,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 181.33333333333334) internal successors, (1632), 9 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:06,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 427 [2023-11-06 23:02:06,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:06,887 INFO L124 PetriNetUnfolderBase]: 99/287 cut-off events. [2023-11-06 23:02:06,888 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 23:02:06,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 287 events. 99/287 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1242 event pairs, 97 based on Foata normal form. 4/218 useless extension candidates. Maximal degree in co-relation 555. Up to 236 conditions per place. [2023-11-06 23:02:06,890 INFO L140 encePairwiseOnDemand]: 422/427 looper letters, 40 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-06 23:02:06,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 57 transitions, 274 flow [2023-11-06 23:02:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:02:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:02:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1489 transitions. [2023-11-06 23:02:06,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43588992974238877 [2023-11-06 23:02:06,899 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1489 transitions. [2023-11-06 23:02:06,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1489 transitions. [2023-11-06 23:02:06,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:06,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1489 transitions. [2023-11-06 23:02:06,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 186.125) internal successors, (1489), 8 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 427.0) internal successors, (3843), 9 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 427.0) internal successors, (3843), 9 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,916 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 156 flow. Second operand 8 states and 1489 transitions. [2023-11-06 23:02:06,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 57 transitions, 274 flow [2023-11-06 23:02:06,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 57 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:02:06,920 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 216 flow [2023-11-06 23:02:06,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2023-11-06 23:02:06,922 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2023-11-06 23:02:06,922 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 216 flow [2023-11-06 23:02:06,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 181.33333333333334) internal successors, (1632), 9 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:06,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:06,924 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 6, 1, 1, 1] [2023-11-06 23:02:06,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 23:02:07,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:07,131 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)] === [2023-11-06 23:02:07,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash -551042028, now seen corresponding path program 3 times [2023-11-06 23:02:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:07,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111914764] [2023-11-06 23:02:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:02:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111914764] [2023-11-06 23:02:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111914764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481774074] [2023-11-06 23:02:07,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:02:07,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:07,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:07,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:07,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:02:45,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 23:02:45,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:45,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:02:45,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:02:45,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:02:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481774074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:45,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:45,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-06 23:02:45,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823282668] [2023-11-06 23:02:45,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:45,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:02:45,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:02:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:02:45,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 427 [2023-11-06 23:02:45,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:45,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:45,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 427 [2023-11-06 23:02:45,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:46,605 INFO L124 PetriNetUnfolderBase]: 99/291 cut-off events. [2023-11-06 23:02:46,605 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 23:02:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 291 events. 99/291 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1247 event pairs, 97 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 576. Up to 236 conditions per place. [2023-11-06 23:02:46,608 INFO L140 encePairwiseOnDemand]: 422/427 looper letters, 40 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2023-11-06 23:02:46,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 61 transitions, 350 flow [2023-11-06 23:02:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:02:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:02:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2213 transitions. [2023-11-06 23:02:46,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43188914910226384 [2023-11-06 23:02:46,618 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2213 transitions. [2023-11-06 23:02:46,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2213 transitions. [2023-11-06 23:02:46,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:46,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2213 transitions. [2023-11-06 23:02:46,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.41666666666666) internal successors, (2213), 12 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:46,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 427.0) internal successors, (5551), 13 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:46,640 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 427.0) internal successors, (5551), 13 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:46,640 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 216 flow. Second operand 12 states and 2213 transitions. [2023-11-06 23:02:46,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 61 transitions, 350 flow [2023-11-06 23:02:46,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 61 transitions, 322 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-06 23:02:46,644 INFO L231 Difference]: Finished difference. Result has 83 places, 61 transitions, 276 flow [2023-11-06 23:02:46,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=276, PETRI_PLACES=83, PETRI_TRANSITIONS=61} [2023-11-06 23:02:46,645 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2023-11-06 23:02:46,645 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 61 transitions, 276 flow [2023-11-06 23:02:46,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:46,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:46,647 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1] [2023-11-06 23:02:46,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:46,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:46,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:02:46,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1001987244, now seen corresponding path program 4 times [2023-11-06 23:02:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:46,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979543001] [2023-11-06 23:02:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-06 23:02:54,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979543001] [2023-11-06 23:02:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979543001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426696388] [2023-11-06 23:02:54,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:02:54,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:54,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:54,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:54,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:02:55,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:02:55,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:02:55,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 23:02:55,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:55,260 INFO L351 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 8 treesize of output 1 [2023-11-06 23:02:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,291 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,313 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,340 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,359 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,386 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,407 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,436 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,448 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,474 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,486 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,509 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,525 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,553 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,570 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,592 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,609 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,636 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,654 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,675 INFO L351 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 19 treesize of output 9 [2023-11-06 23:02:55,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:02:55,687 INFO L351 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 14 treesize of output 9 [2023-11-06 23:02:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-06 23:02:55,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-06 23:02:59,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426696388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:02:59,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:02:59,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-11-06 23:02:59,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341459583] [2023-11-06 23:02:59,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:59,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:02:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:02:59,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:03:00,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 427 [2023-11-06 23:03:00,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 61 transitions, 276 flow. Second operand has 10 states, 10 states have (on average 177.6) internal successors, (1776), 10 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:00,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:00,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 427 [2023-11-06 23:03:00,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:01,319 INFO L124 PetriNetUnfolderBase]: 99/297 cut-off events. [2023-11-06 23:03:01,319 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-06 23:03:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 297 events. 99/297 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1288 event pairs, 65 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 573. Up to 162 conditions per place. [2023-11-06 23:03:01,322 INFO L140 encePairwiseOnDemand]: 423/427 looper letters, 63 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-11-06 23:03:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 392 flow [2023-11-06 23:03:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-06 23:03:01,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488680718188915 [2023-11-06 23:03:01,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-06 23:03:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-06 23:03:01,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:01,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-06 23:03:01,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:01,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:01,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:01,334 INFO L175 Difference]: Start difference. First operand has 83 places, 61 transitions, 276 flow. Second operand 3 states and 575 transitions. [2023-11-06 23:03:01,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 392 flow [2023-11-06 23:03:01,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 344 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-06 23:03:01,338 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 186 flow [2023-11-06 23:03:01,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2023-11-06 23:03:01,340 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2023-11-06 23:03:01,340 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 186 flow [2023-11-06 23:03:01,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 177.6) internal successors, (1776), 10 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:01,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:01,341 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:01,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 23:03:01,550 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)] === [2023-11-06 23:03:01,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash -178834861, now seen corresponding path program 1 times [2023-11-06 23:03:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517263211] [2023-11-06 23:03:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:03:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517263211] [2023-11-06 23:03:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517263211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385932778] [2023-11-06 23:03:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:02,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:02,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:03:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:03,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:03:03,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:03:04,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:03:04,120 INFO L351 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 29 treesize of output 25 [2023-11-06 23:03:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:03:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385932778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:03:04,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:03:04,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 23:03:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76052879] [2023-11-06 23:03:04,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:03:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 23:03:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 23:03:04,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2023-11-06 23:03:05,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 427 [2023-11-06 23:03:05,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 186 flow. Second operand has 26 states, 26 states have (on average 172.30769230769232) internal successors, (4480), 26 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:05,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:05,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 427 [2023-11-06 23:03:05,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:10,056 INFO L124 PetriNetUnfolderBase]: 200/569 cut-off events. [2023-11-06 23:03:10,056 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-06 23:03:10,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 569 events. 200/569 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3378 event pairs, 35 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 1081. Up to 273 conditions per place. [2023-11-06 23:03:10,063 INFO L140 encePairwiseOnDemand]: 419/427 looper letters, 63 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2023-11-06 23:03:10,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 412 flow [2023-11-06 23:03:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:03:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 23:03:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2807 transitions. [2023-11-06 23:03:10,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108606557377049 [2023-11-06 23:03:10,078 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2807 transitions. [2023-11-06 23:03:10,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2807 transitions. [2023-11-06 23:03:10,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:10,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2807 transitions. [2023-11-06 23:03:10,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 175.4375) internal successors, (2807), 16 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:10,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 427.0) internal successors, (7259), 17 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:10,108 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 427.0) internal successors, (7259), 17 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:10,108 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 186 flow. Second operand 16 states and 2807 transitions. [2023-11-06 23:03:10,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 412 flow [2023-11-06 23:03:10,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:03:10,114 INFO L231 Difference]: Finished difference. Result has 91 places, 63 transitions, 241 flow [2023-11-06 23:03:10,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=241, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2023-11-06 23:03:10,115 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2023-11-06 23:03:10,116 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 241 flow [2023-11-06 23:03:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 172.30769230769232) internal successors, (4480), 26 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:10,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:10,118 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:10,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 23:03:10,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:03:10,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1248841570, now seen corresponding path program 1 times [2023-11-06 23:03:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:10,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748176823] [2023-11-06 23:03:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-06 23:03:11,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748176823] [2023-11-06 23:03:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748176823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:11,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521829449] [2023-11-06 23:03:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:11,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 427 [2023-11-06 23:03:11,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:11,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:11,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 427 [2023-11-06 23:03:11,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:11,643 INFO L124 PetriNetUnfolderBase]: 160/448 cut-off events. [2023-11-06 23:03:11,643 INFO L125 PetriNetUnfolderBase]: For 161/163 co-relation queries the response was YES. [2023-11-06 23:03:11,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 448 events. 160/448 cut-off events. For 161/163 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2401 event pairs, 99 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 905. Up to 281 conditions per place. [2023-11-06 23:03:11,649 INFO L140 encePairwiseOnDemand]: 421/427 looper letters, 52 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-06 23:03:11,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 69 transitions, 375 flow [2023-11-06 23:03:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-11-06 23:03:11,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45120999219359875 [2023-11-06 23:03:11,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-11-06 23:03:11,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-11-06 23:03:11,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:11,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-11-06 23:03:11,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:11,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:11,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:11,663 INFO L175 Difference]: Start difference. First operand has 91 places, 63 transitions, 241 flow. Second operand 3 states and 578 transitions. [2023-11-06 23:03:11,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 69 transitions, 375 flow [2023-11-06 23:03:11,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 320 flow, removed 8 selfloop flow, removed 20 redundant places. [2023-11-06 23:03:11,667 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 196 flow [2023-11-06 23:03:11,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-11-06 23:03:11,668 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2023-11-06 23:03:11,668 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 196 flow [2023-11-06 23:03:11,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:11,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:11,669 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:11,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:03:11,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 49 more)] === [2023-11-06 23:03:11,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1248841620, now seen corresponding path program 1 times [2023-11-06 23:03:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855826773] [2023-11-06 23:03:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-06 23:03:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855826773] [2023-11-06 23:03:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855826773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:13,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453371664] [2023-11-06 23:03:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:13,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:13,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:13,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:13,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:13,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 427 [2023-11-06 23:03:13,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:13,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:13,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 427 [2023-11-06 23:03:13,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:14,146 INFO L124 PetriNetUnfolderBase]: 167/453 cut-off events. [2023-11-06 23:03:14,147 INFO L125 PetriNetUnfolderBase]: For 156/158 co-relation queries the response was YES. [2023-11-06 23:03:14,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 453 events. 167/453 cut-off events. For 156/158 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2414 event pairs, 94 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 963. Up to 315 conditions per place. [2023-11-06 23:03:14,152 INFO L140 encePairwiseOnDemand]: 417/427 looper letters, 56 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-11-06 23:03:14,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 368 flow [2023-11-06 23:03:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-11-06 23:03:14,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527712724434036 [2023-11-06 23:03:14,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-11-06 23:03:14,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-11-06 23:03:14,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:14,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-11-06 23:03:14,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:14,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:14,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:14,164 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 196 flow. Second operand 3 states and 580 transitions. [2023-11-06 23:03:14,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 368 flow [2023-11-06 23:03:14,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:03:14,167 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 255 flow [2023-11-06 23:03:14,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-11-06 23:03:14,168 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2023-11-06 23:03:14,169 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 255 flow [2023-11-06 23:03:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:14,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:14,169 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:03:14,170 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)] === [2023-11-06 23:03:14,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1248913212, now seen corresponding path program 1 times [2023-11-06 23:03:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865927743] [2023-11-06 23:03:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 15 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:03:46,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865927743] [2023-11-06 23:03:46,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865927743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:03:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124822019] [2023-11-06 23:03:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:03:46,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:46,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:03:46,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa1c499-21af-4e1c-b2c7-b60117cafee0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:03:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:49,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 222 conjunts are in the unsatisfiable core [2023-11-06 23:03:49,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:03:49,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,316 INFO L351 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 14 treesize of output 9 [2023-11-06 23:03:49,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,411 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 26 treesize of output 25 [2023-11-06 23:03:49,437 INFO L322 Elim1Store]: treesize reduction 62, result has 7.5 percent of original size [2023-11-06 23:03:49,441 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 61 [2023-11-06 23:03:49,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,486 INFO L322 Elim1Store]: treesize reduction 46, result has 28.1 percent of original size [2023-11-06 23:03:49,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 61 [2023-11-06 23:03:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2023-11-06 23:03:49,674 INFO L351 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 78 treesize of output 65 [2023-11-06 23:03:49,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2023-11-06 23:03:49,705 INFO L351 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 164 treesize of output 131 [2023-11-06 23:03:49,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,720 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 51 [2023-11-06 23:03:49,758 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:03:49,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 100 [2023-11-06 23:03:49,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:49,922 INFO L322 Elim1Store]: treesize reduction 178, result has 28.2 percent of original size [2023-11-06 23:03:49,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 77 treesize of output 125 [2023-11-06 23:03:50,237 INFO L351 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 78 treesize of output 65 [2023-11-06 23:03:50,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 101 [2023-11-06 23:03:50,277 INFO L351 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 164 treesize of output 131 [2023-11-06 23:03:50,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,300 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:03:50,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 89 [2023-11-06 23:03:50,348 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:03:50,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 206 treesize of output 157 [2023-11-06 23:03:50,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:50,596 INFO L322 Elim1Store]: treesize reduction 320, result has 28.3 percent of original size [2023-11-06 23:03:50,597 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 187 [2023-11-06 23:03:51,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,161 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:03:51,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 243 treesize of output 139 [2023-11-06 23:03:51,207 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:03:51,208 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 234 [2023-11-06 23:03:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,560 INFO L322 Elim1Store]: treesize reduction 462, result has 28.3 percent of original size [2023-11-06 23:03:51,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 249 [2023-11-06 23:03:51,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:51,831 INFO L351 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 240 treesize of output 186 [2023-11-06 23:03:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:52,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:52,646 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:03:52,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 197 [2023-11-06 23:03:52,708 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:03:52,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 450 treesize of output 347 [2023-11-06 23:03:52,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:53,193 INFO L322 Elim1Store]: treesize reduction 604, result has 28.3 percent of original size [2023-11-06 23:03:53,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 41 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 27 case distinctions, treesize of input 125 treesize of output 311 [2023-11-06 23:03:53,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:53,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:53,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:53,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 291 [2023-11-06 23:03:54,804 INFO L351 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 164 treesize of output 131 [2023-11-06 23:03:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:54,849 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:03:54,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 559 treesize of output 271 [2023-11-06 23:03:55,000 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:03:55,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 621 treesize of output 480 [2023-11-06 23:03:55,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:55,708 INFO L322 Elim1Store]: treesize reduction 746, result has 28.3 percent of original size [2023-11-06 23:03:55,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 13 select indices, 13 select index equivalence classes, 60 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 33 case distinctions, treesize of input 141 treesize of output 373 [2023-11-06 23:03:56,530 INFO L351 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 78 treesize of output 65 [2023-11-06 23:03:56,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:56,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:56,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:56,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:56,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:56,622 INFO L351 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 556 treesize of output 432 [2023-11-06 23:03:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 763 treesize of output 593 [2023-11-06 23:03:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:58,794 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:03:58,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 766 treesize of output 353 [2023-11-06 23:03:58,903 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:03:58,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 838 treesize of output 649 [2023-11-06 23:03:59,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:03:59,821 INFO L322 Elim1Store]: treesize reduction 888, result has 28.3 percent of original size [2023-11-06 23:03:59,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 84 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 39 case distinctions, treesize of input 157 treesize of output 435 [2023-11-06 23:04:03,711 INFO L351 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 164 treesize of output 131 [2023-11-06 23:04:03,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:03,793 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:04:03,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 1019 treesize of output 451 [2023-11-06 23:04:04,006 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:04:04,007 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1091 treesize of output 846 [2023-11-06 23:04:04,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:05,133 INFO L322 Elim1Store]: treesize reduction 1030, result has 28.3 percent of original size [2023-11-06 23:04:05,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 112 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 173 treesize of output 497 [2023-11-06 23:04:06,574 INFO L351 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 78 treesize of output 65 [2023-11-06 23:04:06,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:06,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:06,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:06,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:06,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:06,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1016 treesize of output 790 [2023-11-06 23:04:10,138 INFO L351 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 78 treesize of output 65 [2023-11-06 23:04:10,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1305 treesize of output 1015 [2023-11-06 23:04:10,358 INFO L351 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 164 treesize of output 131 [2023-11-06 23:04:10,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:10,458 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:04:10,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 1308 treesize of output 561 [2023-11-06 23:04:10,724 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:04:10,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1380 treesize of output 1071 [2023-11-06 23:04:11,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:12,040 INFO L322 Elim1Store]: treesize reduction 1172, result has 28.3 percent of original size [2023-11-06 23:04:12,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 144 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 51 case distinctions, treesize of input 189 treesize of output 559 [2023-11-06 23:04:19,053 INFO L351 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 73 treesize of output 60 [2023-11-06 23:04:19,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1630 treesize of output 1268 [2023-11-06 23:04:19,408 INFO L351 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 149 treesize of output 116 [2023-11-06 23:04:19,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:19,634 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:04:19,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 1633 treesize of output 683 [2023-11-06 23:04:19,885 INFO L322 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2023-11-06 23:04:19,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1705 treesize of output 1324 [2023-11-06 23:04:20,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:04:21,397 INFO L322 Elim1Store]: treesize reduction 1314, result has 28.3 percent of original size [2023-11-06 23:04:21,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 21 select indices, 21 select index equivalence classes, 180 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 57 case distinctions, treesize of input 205 treesize of output 621