./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:41:52,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:41:52,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 03:41:52,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:41:52,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:41:52,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:41:52,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:41:52,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:41:52,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:41:52,176 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:41:52,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:41:52,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:41:52,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:41:52,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:41:52,179 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:41:52,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:41:52,180 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:41:52,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:41:52,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:41:52,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:41:52,182 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:41:52,183 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:41:52,183 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:41:52,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:41:52,184 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:41:52,184 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:41:52,185 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:41:52,185 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:41:52,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:41:52,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:41:52,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:41:52,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:41:52,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:41:52,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:41:52,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:41:52,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:41:52,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:41:52,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:41:52,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:41:52,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:41:52,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:41:52,197 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_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-29 03:41:52,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:41:52,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:41:52,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:41:52,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:41:52,454 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:41:52,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-29 03:41:55,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:41:55,520 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:41:55,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/sv-benchmarks/c/pthread/queue_longer.i [2023-11-29 03:41:55,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data/6daebde72/1a8539be76f5471ab20003730a4c9035/FLAGc72068a72 [2023-11-29 03:41:55,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data/6daebde72/1a8539be76f5471ab20003730a4c9035 [2023-11-29 03:41:55,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:41:55,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:41:55,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:41:55,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:41:55,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:41:55,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:41:55" (1/1) ... [2023-11-29 03:41:55,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7244d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:55, skipping insertion in model container [2023-11-29 03:41:55,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:41:55" (1/1) ... [2023-11-29 03:41:55,618 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:41:56,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:41:56,022 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:41:56,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:41:56,125 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:41:56,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56 WrapperNode [2023-11-29 03:41:56,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:41:56,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:41:56,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:41:56,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:41:56,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,191 INFO L138 Inliner]: procedures = 275, calls = 66, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 260 [2023-11-29 03:41:56,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:41:56,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:41:56,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:41:56,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:41:56,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,236 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 5, 4, 32, 2, 2]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0, 0]. The 20 writes are split as follows [0, 0, 3, 15, 1, 1]. [2023-11-29 03:41:56,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:41:56,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:41:56,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:41:56,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:41:56,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (1/1) ... [2023-11-29 03:41:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:41:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:41:56,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:41:56,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:41:56,351 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 03:41:56,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 03:41:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 03:41:56,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 03:41:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:41:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:41:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 03:41:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:41:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:41:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:41:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:41:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:41:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:41:56,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:41:56,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:41:56,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:41:56,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:41:56,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:41:56,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:41:56,355 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 03:41:56,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:41:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:41:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:41:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:41:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:41:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:41:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:41:56,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:41:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:41:56,359 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:41:56,537 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:41:56,539 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:41:57,088 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:41:57,295 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:41:57,295 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:41:57,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:41:57 BoogieIcfgContainer [2023-11-29 03:41:57,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:41:57,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:41:57,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:41:57,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:41:57,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:41:55" (1/3) ... [2023-11-29 03:41:57,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cbdce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:41:57, skipping insertion in model container [2023-11-29 03:41:57,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:41:56" (2/3) ... [2023-11-29 03:41:57,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cbdce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:41:57, skipping insertion in model container [2023-11-29 03:41:57,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:41:57" (3/3) ... [2023-11-29 03:41:57,305 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-29 03:41:57,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:41:57,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-29 03:41:57,325 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:41:57,447 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:41:57,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 185 transitions, 384 flow [2023-11-29 03:41:57,571 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-29 03:41:57,571 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:41:57,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 14/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 590 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-11-29 03:41:57,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 185 transitions, 384 flow [2023-11-29 03:41:57,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 182 transitions, 376 flow [2023-11-29 03:41:57,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:41:57,599 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;@14d639ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:41:57,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 142 error locations. [2023-11-29 03:41:57,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:41:57,602 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 03:41:57,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:41:57,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:41:57,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:41:57,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:41:57,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 22962, now seen corresponding path program 1 times [2023-11-29 03:41:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:57,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11771773] [2023-11-29 03:41:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:41:57,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:57,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11771773] [2023-11-29 03:41:57,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11771773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:57,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:41:57,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:41:57,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306376365] [2023-11-29 03:41:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:57,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:41:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:41:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:41:58,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-29 03:41:58,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 182 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:58,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:41:58,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-29 03:41:58,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:41:58,967 INFO L124 PetriNetUnfolderBase]: 1797/4866 cut-off events. [2023-11-29 03:41:58,968 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-29 03:41:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 4866 events. 1797/4866 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 39224 event pairs, 1436 based on Foata normal form. 186/3778 useless extension candidates. Maximal degree in co-relation 7607. Up to 2853 conditions per place. [2023-11-29 03:41:59,021 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 62 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2023-11-29 03:41:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 167 transitions, 474 flow [2023-11-29 03:41:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:41:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:41:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-29 03:41:59,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7081081081081081 [2023-11-29 03:41:59,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-29 03:41:59,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-29 03:41:59,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:41:59,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-29 03:41:59,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:59,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:59,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:59,057 INFO L175 Difference]: Start difference. First operand has 175 places, 182 transitions, 376 flow. Second operand 3 states and 393 transitions. [2023-11-29 03:41:59,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 167 transitions, 474 flow [2023-11-29 03:41:59,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 167 transitions, 466 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:41:59,069 INFO L231 Difference]: Finished difference. Result has 164 places, 167 transitions, 342 flow [2023-11-29 03:41:59,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=164, PETRI_TRANSITIONS=167} [2023-11-29 03:41:59,075 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -11 predicate places. [2023-11-29 03:41:59,075 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 167 transitions, 342 flow [2023-11-29 03:41:59,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:59,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:41:59,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:41:59,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:41:59,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:41:59,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:41:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash 22963, now seen corresponding path program 1 times [2023-11-29 03:41:59,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:41:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549777812] [2023-11-29 03:41:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:41:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:41:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:41:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:41:59,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549777812] [2023-11-29 03:41:59,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549777812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:41:59,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:41:59,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:41:59,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187774922] [2023-11-29 03:41:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:41:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:41:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:41:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:41:59,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:41:59,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 167 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:41:59,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:41:59,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:41:59,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:00,050 INFO L124 PetriNetUnfolderBase]: 1797/4863 cut-off events. [2023-11-29 03:42:00,050 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 03:42:00,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7751 conditions, 4863 events. 1797/4863 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 39210 event pairs, 1436 based on Foata normal form. 3/3592 useless extension candidates. Maximal degree in co-relation 7740. Up to 2853 conditions per place. [2023-11-29 03:42:00,085 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2023-11-29 03:42:00,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 164 transitions, 460 flow [2023-11-29 03:42:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-29 03:42:00,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063063063063063 [2023-11-29 03:42:00,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-29 03:42:00,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-29 03:42:00,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:00,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-29 03:42:00,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:00,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:00,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:00,094 INFO L175 Difference]: Start difference. First operand has 164 places, 167 transitions, 342 flow. Second operand 3 states and 392 transitions. [2023-11-29 03:42:00,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 164 transitions, 460 flow [2023-11-29 03:42:00,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 164 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:00,100 INFO L231 Difference]: Finished difference. Result has 161 places, 164 transitions, 336 flow [2023-11-29 03:42:00,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=161, PETRI_TRANSITIONS=164} [2023-11-29 03:42:00,101 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -14 predicate places. [2023-11-29 03:42:00,101 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 164 transitions, 336 flow [2023-11-29 03:42:00,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:00,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:00,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:42:00,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:42:00,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:00,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 684761422, now seen corresponding path program 1 times [2023-11-29 03:42:00,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:00,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116119142] [2023-11-29 03:42:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:00,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116119142] [2023-11-29 03:42:00,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116119142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:00,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:00,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642369126] [2023-11-29 03:42:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:00,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:42:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:42:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:42:00,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:42:00,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 164 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:00,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:00,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:42:00,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:01,125 INFO L124 PetriNetUnfolderBase]: 1797/4861 cut-off events. [2023-11-29 03:42:01,125 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:42:01,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 4861 events. 1797/4861 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 39200 event pairs, 1436 based on Foata normal form. 0/3590 useless extension candidates. Maximal degree in co-relation 7739. Up to 2852 conditions per place. [2023-11-29 03:42:01,167 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 62 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2023-11-29 03:42:01,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 462 flow [2023-11-29 03:42:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:42:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:42:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-11-29 03:42:01,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527027027027027 [2023-11-29 03:42:01,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-11-29 03:42:01,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-11-29 03:42:01,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:01,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-11-29 03:42:01,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:01,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:01,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:01,177 INFO L175 Difference]: Start difference. First operand has 161 places, 164 transitions, 336 flow. Second operand 4 states and 483 transitions. [2023-11-29 03:42:01,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 462 flow [2023-11-29 03:42:01,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:01,183 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 334 flow [2023-11-29 03:42:01,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-11-29 03:42:01,184 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -15 predicate places. [2023-11-29 03:42:01,184 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 334 flow [2023-11-29 03:42:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:01,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:01,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:42:01,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:42:01,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:01,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash 684761423, now seen corresponding path program 1 times [2023-11-29 03:42:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956969034] [2023-11-29 03:42:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:01,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:01,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956969034] [2023-11-29 03:42:01,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956969034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:01,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:01,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:42:01,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249158120] [2023-11-29 03:42:01,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:01,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:42:01,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:01,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:42:01,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:42:01,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:42:01,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:01,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:01,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:42:01,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:02,098 INFO L124 PetriNetUnfolderBase]: 1797/4859 cut-off events. [2023-11-29 03:42:02,098 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-29 03:42:02,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7748 conditions, 4859 events. 1797/4859 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 39237 event pairs, 1436 based on Foata normal form. 2/3590 useless extension candidates. Maximal degree in co-relation 7733. Up to 2852 conditions per place. [2023-11-29 03:42:02,131 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 59 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2023-11-29 03:42:02,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 160 transitions, 454 flow [2023-11-29 03:42:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:42:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:42:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-11-29 03:42:02,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6810810810810811 [2023-11-29 03:42:02,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-11-29 03:42:02,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-11-29 03:42:02,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:02,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-11-29 03:42:02,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:02,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:02,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:02,142 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 334 flow. Second operand 4 states and 504 transitions. [2023-11-29 03:42:02,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 160 transitions, 454 flow [2023-11-29 03:42:02,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 160 transitions, 448 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:42:02,146 INFO L231 Difference]: Finished difference. Result has 158 places, 160 transitions, 330 flow [2023-11-29 03:42:02,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=158, PETRI_TRANSITIONS=160} [2023-11-29 03:42:02,148 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -17 predicate places. [2023-11-29 03:42:02,148 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 160 transitions, 330 flow [2023-11-29 03:42:02,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:02,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:02,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:42:02,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:02,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 588076993, now seen corresponding path program 1 times [2023-11-29 03:42:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341043487] [2023-11-29 03:42:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341043487] [2023-11-29 03:42:02,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341043487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:02,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:02,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:42:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681119262] [2023-11-29 03:42:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:02,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:02,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:02,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:02,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:02,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-29 03:42:02,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 160 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:02,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:02,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-29 03:42:02,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:03,182 INFO L124 PetriNetUnfolderBase]: 2901/7293 cut-off events. [2023-11-29 03:42:03,183 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-29 03:42:03,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11779 conditions, 7293 events. 2901/7293 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 61566 event pairs, 2366 based on Foata normal form. 0/5461 useless extension candidates. Maximal degree in co-relation 11764. Up to 4449 conditions per place. [2023-11-29 03:42:03,225 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 62 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-29 03:42:03,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 158 transitions, 454 flow [2023-11-29 03:42:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-29 03:42:03,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 03:42:03,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-29 03:42:03,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-29 03:42:03,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-29 03:42:03,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:03,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:03,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:03,232 INFO L175 Difference]: Start difference. First operand has 158 places, 160 transitions, 330 flow. Second operand 3 states and 390 transitions. [2023-11-29 03:42:03,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 158 transitions, 454 flow [2023-11-29 03:42:03,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 158 transitions, 448 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:42:03,236 INFO L231 Difference]: Finished difference. Result has 155 places, 158 transitions, 324 flow [2023-11-29 03:42:03,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=155, PETRI_TRANSITIONS=158} [2023-11-29 03:42:03,237 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -20 predicate places. [2023-11-29 03:42:03,238 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 158 transitions, 324 flow [2023-11-29 03:42:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:03,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:03,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:03,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:42:03,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:03,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash 588076994, now seen corresponding path program 1 times [2023-11-29 03:42:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:03,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061443848] [2023-11-29 03:42:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061443848] [2023-11-29 03:42:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061443848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:42:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984948892] [2023-11-29 03:42:03,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:03,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:03,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:03,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:42:03,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 158 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:03,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:03,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:42:03,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:03,996 INFO L124 PetriNetUnfolderBase]: 1797/4847 cut-off events. [2023-11-29 03:42:03,997 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:42:04,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 4847 events. 1797/4847 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 39082 event pairs, 1436 based on Foata normal form. 488/4076 useless extension candidates. Maximal degree in co-relation 7725. Up to 2852 conditions per place. [2023-11-29 03:42:04,014 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2023-11-29 03:42:04,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 444 flow [2023-11-29 03:42:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-29 03:42:04,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7099099099099099 [2023-11-29 03:42:04,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-29 03:42:04,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-29 03:42:04,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:04,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-29 03:42:04,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,021 INFO L175 Difference]: Start difference. First operand has 155 places, 158 transitions, 324 flow. Second operand 3 states and 394 transitions. [2023-11-29 03:42:04,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 156 transitions, 444 flow [2023-11-29 03:42:04,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 156 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:04,023 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 320 flow [2023-11-29 03:42:04,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2023-11-29 03:42:04,025 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -22 predicate places. [2023-11-29 03:42:04,025 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 320 flow [2023-11-29 03:42:04,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:04,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:04,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:42:04,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:04,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash 231025848, now seen corresponding path program 1 times [2023-11-29 03:42:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:04,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462243934] [2023-11-29 03:42:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:04,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:04,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462243934] [2023-11-29 03:42:04,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462243934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:04,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:04,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:42:04,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068215884] [2023-11-29 03:42:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:04,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:04,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:04,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:42:04,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:04,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:42:04,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:04,674 INFO L124 PetriNetUnfolderBase]: 1797/4829 cut-off events. [2023-11-29 03:42:04,675 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:42:04,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7717 conditions, 4829 events. 1797/4829 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 38827 event pairs, 1436 based on Foata normal form. 46/3634 useless extension candidates. Maximal degree in co-relation 7707. Up to 2852 conditions per place. [2023-11-29 03:42:04,699 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-11-29 03:42:04,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 154 transitions, 440 flow [2023-11-29 03:42:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-29 03:42:04,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7099099099099099 [2023-11-29 03:42:04,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-29 03:42:04,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-29 03:42:04,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:04,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-29 03:42:04,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,706 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 320 flow. Second operand 3 states and 394 transitions. [2023-11-29 03:42:04,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 154 transitions, 440 flow [2023-11-29 03:42:04,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:04,710 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2023-11-29 03:42:04,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2023-11-29 03:42:04,711 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -24 predicate places. [2023-11-29 03:42:04,711 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2023-11-29 03:42:04,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:04,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:04,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:42:04,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:04,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash 231025847, now seen corresponding path program 1 times [2023-11-29 03:42:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15820961] [2023-11-29 03:42:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:04,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15820961] [2023-11-29 03:42:04,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15820961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:04,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:04,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:42:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61461489] [2023-11-29 03:42:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:04,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-29 03:42:04,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:04,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:04,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-29 03:42:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:05,400 INFO L124 PetriNetUnfolderBase]: 1849/4945 cut-off events. [2023-11-29 03:42:05,400 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-29 03:42:05,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7931 conditions, 4945 events. 1849/4945 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 39662 event pairs, 1480 based on Foata normal form. 0/3690 useless extension candidates. Maximal degree in co-relation 7921. Up to 2950 conditions per place. [2023-11-29 03:42:05,423 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 62 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-11-29 03:42:05,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 152 transitions, 440 flow [2023-11-29 03:42:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-29 03:42:05,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 03:42:05,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-29 03:42:05,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-29 03:42:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-29 03:42:05,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:05,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:05,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:05,430 INFO L175 Difference]: Start difference. First operand has 151 places, 154 transitions, 316 flow. Second operand 3 states and 390 transitions. [2023-11-29 03:42:05,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 152 transitions, 440 flow [2023-11-29 03:42:05,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 152 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:05,434 INFO L231 Difference]: Finished difference. Result has 149 places, 152 transitions, 312 flow [2023-11-29 03:42:05,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=149, PETRI_TRANSITIONS=152} [2023-11-29 03:42:05,435 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -26 predicate places. [2023-11-29 03:42:05,435 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 152 transitions, 312 flow [2023-11-29 03:42:05,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:05,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:05,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:05,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:42:05,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:05,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:05,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1317428719, now seen corresponding path program 1 times [2023-11-29 03:42:05,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:05,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913554117] [2023-11-29 03:42:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:05,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913554117] [2023-11-29 03:42:05,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913554117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:05,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293010316] [2023-11-29 03:42:05,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:05,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 185 [2023-11-29 03:42:05,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 152 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:05,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:05,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 185 [2023-11-29 03:42:05,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:06,433 INFO L124 PetriNetUnfolderBase]: 2134/4730 cut-off events. [2023-11-29 03:42:06,433 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:42:06,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8177 conditions, 4730 events. 2134/4730 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 33800 event pairs, 755 based on Foata normal form. 0/4157 useless extension candidates. Maximal degree in co-relation 8167. Up to 1928 conditions per place. [2023-11-29 03:42:06,458 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 83 selfloop transitions, 7 changer transitions 0/156 dead transitions. [2023-11-29 03:42:06,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 156 transitions, 501 flow [2023-11-29 03:42:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:42:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 531 transitions. [2023-11-29 03:42:06,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740540540540541 [2023-11-29 03:42:06,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 531 transitions. [2023-11-29 03:42:06,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 531 transitions. [2023-11-29 03:42:06,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:06,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 531 transitions. [2023-11-29 03:42:06,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:06,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:06,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:06,471 INFO L175 Difference]: Start difference. First operand has 149 places, 152 transitions, 312 flow. Second operand 5 states and 531 transitions. [2023-11-29 03:42:06,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 156 transitions, 501 flow [2023-11-29 03:42:06,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 156 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:06,477 INFO L231 Difference]: Finished difference. Result has 135 places, 136 transitions, 290 flow [2023-11-29 03:42:06,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=135, PETRI_TRANSITIONS=136} [2023-11-29 03:42:06,478 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -40 predicate places. [2023-11-29 03:42:06,478 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 136 transitions, 290 flow [2023-11-29 03:42:06,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:06,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:06,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:06,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:42:06,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:06,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1317428718, now seen corresponding path program 1 times [2023-11-29 03:42:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418875284] [2023-11-29 03:42:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:06,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418875284] [2023-11-29 03:42:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418875284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:06,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:06,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:06,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43736026] [2023-11-29 03:42:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:06,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:06,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:07,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 185 [2023-11-29 03:42:07,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 136 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 103.66666666666667) internal successors, (622), 6 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:07,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:07,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 185 [2023-11-29 03:42:07,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:07,577 INFO L124 PetriNetUnfolderBase]: 1798/4046 cut-off events. [2023-11-29 03:42:07,577 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-29 03:42:07,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7082 conditions, 4046 events. 1798/4046 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 28246 event pairs, 743 based on Foata normal form. 216/3715 useless extension candidates. Maximal degree in co-relation 2813. Up to 1479 conditions per place. [2023-11-29 03:42:07,594 INFO L140 encePairwiseOnDemand]: 168/185 looper letters, 75 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2023-11-29 03:42:07,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 146 transitions, 475 flow [2023-11-29 03:42:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:42:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-11-29 03:42:07,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6508108108108108 [2023-11-29 03:42:07,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-11-29 03:42:07,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-11-29 03:42:07,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:07,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-11-29 03:42:07,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:07,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:07,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:07,604 INFO L175 Difference]: Start difference. First operand has 135 places, 136 transitions, 290 flow. Second operand 5 states and 602 transitions. [2023-11-29 03:42:07,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 146 transitions, 475 flow [2023-11-29 03:42:07,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 146 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:42:07,610 INFO L231 Difference]: Finished difference. Result has 125 places, 126 transitions, 270 flow [2023-11-29 03:42:07,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=125, PETRI_TRANSITIONS=126} [2023-11-29 03:42:07,611 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -50 predicate places. [2023-11-29 03:42:07,611 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 126 transitions, 270 flow [2023-11-29 03:42:07,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.66666666666667) internal successors, (622), 6 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:07,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:07,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:07,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:42:07,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:07,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2109383483, now seen corresponding path program 1 times [2023-11-29 03:42:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:07,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022572755] [2023-11-29 03:42:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022572755] [2023-11-29 03:42:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022572755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:08,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:08,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:42:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668197067] [2023-11-29 03:42:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:42:08,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:42:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:42:08,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2023-11-29 03:42:08,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 126 transitions, 270 flow. Second operand has 8 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:08,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:08,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2023-11-29 03:42:08,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:09,365 INFO L124 PetriNetUnfolderBase]: 2502/5551 cut-off events. [2023-11-29 03:42:09,365 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-29 03:42:09,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9711 conditions, 5551 events. 2502/5551 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 40873 event pairs, 536 based on Foata normal form. 0/4555 useless extension candidates. Maximal degree in co-relation 3905. Up to 3437 conditions per place. [2023-11-29 03:42:09,386 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 125 selfloop transitions, 12 changer transitions 0/193 dead transitions. [2023-11-29 03:42:09,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 193 transitions, 683 flow [2023-11-29 03:42:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:42:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:42:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 891 transitions. [2023-11-29 03:42:09,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.602027027027027 [2023-11-29 03:42:09,391 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 891 transitions. [2023-11-29 03:42:09,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 891 transitions. [2023-11-29 03:42:09,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:09,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 891 transitions. [2023-11-29 03:42:09,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.375) internal successors, (891), 8 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:09,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:09,400 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:09,400 INFO L175 Difference]: Start difference. First operand has 125 places, 126 transitions, 270 flow. Second operand 8 states and 891 transitions. [2023-11-29 03:42:09,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 193 transitions, 683 flow [2023-11-29 03:42:09,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 193 transitions, 667 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:42:09,407 INFO L231 Difference]: Finished difference. Result has 132 places, 136 transitions, 332 flow [2023-11-29 03:42:09,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=332, PETRI_PLACES=132, PETRI_TRANSITIONS=136} [2023-11-29 03:42:09,408 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -43 predicate places. [2023-11-29 03:42:09,408 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 136 transitions, 332 flow [2023-11-29 03:42:09,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:09,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:09,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:42:09,409 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:09,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 966379410, now seen corresponding path program 1 times [2023-11-29 03:42:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:09,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224500276] [2023-11-29 03:42:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224500276] [2023-11-29 03:42:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224500276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697027391] [2023-11-29 03:42:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:10,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 185 [2023-11-29 03:42:10,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 136 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:10,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:10,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 185 [2023-11-29 03:42:10,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:10,531 INFO L124 PetriNetUnfolderBase]: 2058/4754 cut-off events. [2023-11-29 03:42:10,532 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-11-29 03:42:10,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 4754 events. 2058/4754 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 35123 event pairs, 889 based on Foata normal form. 0/3941 useless extension candidates. Maximal degree in co-relation 8204. Up to 1703 conditions per place. [2023-11-29 03:42:10,548 INFO L140 encePairwiseOnDemand]: 174/185 looper letters, 82 selfloop transitions, 8 changer transitions 0/152 dead transitions. [2023-11-29 03:42:10,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 152 transitions, 547 flow [2023-11-29 03:42:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:42:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:42:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2023-11-29 03:42:10,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6072072072072072 [2023-11-29 03:42:10,551 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2023-11-29 03:42:10,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2023-11-29 03:42:10,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:10,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2023-11-29 03:42:10,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:10,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:10,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:10,557 INFO L175 Difference]: Start difference. First operand has 132 places, 136 transitions, 332 flow. Second operand 6 states and 674 transitions. [2023-11-29 03:42:10,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 152 transitions, 547 flow [2023-11-29 03:42:10,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 152 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:10,562 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 336 flow [2023-11-29 03:42:10,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2023-11-29 03:42:10,563 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -44 predicate places. [2023-11-29 03:42:10,563 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 336 flow [2023-11-29 03:42:10,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:10,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:10,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:42:10,564 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:10,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1997287935, now seen corresponding path program 1 times [2023-11-29 03:42:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91488599] [2023-11-29 03:42:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:10,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91488599] [2023-11-29 03:42:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91488599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:10,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:10,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:10,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386244295] [2023-11-29 03:42:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:10,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:10,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 185 [2023-11-29 03:42:10,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:10,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:10,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 185 [2023-11-29 03:42:10,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:11,459 INFO L124 PetriNetUnfolderBase]: 2430/5048 cut-off events. [2023-11-29 03:42:11,459 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2023-11-29 03:42:11,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9605 conditions, 5048 events. 2430/5048 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 34853 event pairs, 907 based on Foata normal form. 87/4680 useless extension candidates. Maximal degree in co-relation 9293. Up to 2023 conditions per place. [2023-11-29 03:42:11,476 INFO L140 encePairwiseOnDemand]: 172/185 looper letters, 109 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2023-11-29 03:42:11,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 163 transitions, 657 flow [2023-11-29 03:42:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:42:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-11-29 03:42:11,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6378378378378379 [2023-11-29 03:42:11,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-11-29 03:42:11,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-11-29 03:42:11,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:11,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-11-29 03:42:11,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,482 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 336 flow. Second operand 5 states and 590 transitions. [2023-11-29 03:42:11,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 163 transitions, 657 flow [2023-11-29 03:42:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 163 transitions, 631 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:42:11,486 INFO L231 Difference]: Finished difference. Result has 122 places, 124 transitions, 314 flow [2023-11-29 03:42:11,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=122, PETRI_TRANSITIONS=124} [2023-11-29 03:42:11,486 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -53 predicate places. [2023-11-29 03:42:11,487 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 124 transitions, 314 flow [2023-11-29 03:42:11,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:11,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:11,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:42:11,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:11,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1997287936, now seen corresponding path program 1 times [2023-11-29 03:42:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:11,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969253391] [2023-11-29 03:42:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969253391] [2023-11-29 03:42:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969253391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:11,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:42:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473898536] [2023-11-29 03:42:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:11,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:42:11,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:11,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:42:11,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:11,951 INFO L124 PetriNetUnfolderBase]: 1391/3115 cut-off events. [2023-11-29 03:42:11,952 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-11-29 03:42:11,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5604 conditions, 3115 events. 1391/3115 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18194 event pairs, 707 based on Foata normal form. 57/2824 useless extension candidates. Maximal degree in co-relation 5596. Up to 1252 conditions per place. [2023-11-29 03:42:11,963 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 84 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2023-11-29 03:42:11,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 138 transitions, 492 flow [2023-11-29 03:42:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-11-29 03:42:11,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7639639639639639 [2023-11-29 03:42:11,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-11-29 03:42:11,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-11-29 03:42:11,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:11,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-11-29 03:42:11,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,968 INFO L175 Difference]: Start difference. First operand has 122 places, 124 transitions, 314 flow. Second operand 3 states and 424 transitions. [2023-11-29 03:42:11,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 138 transitions, 492 flow [2023-11-29 03:42:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 457 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-29 03:42:11,972 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 245 flow [2023-11-29 03:42:11,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2023-11-29 03:42:11,973 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -63 predicate places. [2023-11-29 03:42:11,973 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 245 flow [2023-11-29 03:42:11,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:11,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:11,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:11,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:42:11,974 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:11,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1448703574, now seen corresponding path program 1 times [2023-11-29 03:42:11,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:11,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156241607] [2023-11-29 03:42:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:12,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:12,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156241607] [2023-11-29 03:42:12,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156241607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:12,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:12,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:42:12,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414211349] [2023-11-29 03:42:12,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:42:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:12,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:42:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:42:12,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 185 [2023-11-29 03:42:12,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:12,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:12,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 185 [2023-11-29 03:42:12,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:12,726 INFO L124 PetriNetUnfolderBase]: 2290/4731 cut-off events. [2023-11-29 03:42:12,726 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-29 03:42:12,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8516 conditions, 4731 events. 2290/4731 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 28754 event pairs, 1839 based on Foata normal form. 73/4396 useless extension candidates. Maximal degree in co-relation 8511. Up to 3558 conditions per place. [2023-11-29 03:42:12,744 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 64 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-29 03:42:12,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 371 flow [2023-11-29 03:42:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-11-29 03:42:12,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6954954954954955 [2023-11-29 03:42:12,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-11-29 03:42:12,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-11-29 03:42:12,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:12,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-11-29 03:42:12,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:12,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:12,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:12,749 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 245 flow. Second operand 3 states and 386 transitions. [2023-11-29 03:42:12,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 371 flow [2023-11-29 03:42:12,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:42:12,752 INFO L231 Difference]: Finished difference. Result has 110 places, 111 transitions, 240 flow [2023-11-29 03:42:12,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=110, PETRI_TRANSITIONS=111} [2023-11-29 03:42:12,753 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -65 predicate places. [2023-11-29 03:42:12,753 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 111 transitions, 240 flow [2023-11-29 03:42:12,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:12,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:12,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:12,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:42:12,754 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:12,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1448703573, now seen corresponding path program 1 times [2023-11-29 03:42:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040884814] [2023-11-29 03:42:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:12,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040884814] [2023-11-29 03:42:13,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040884814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:13,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:13,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:42:13,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819551004] [2023-11-29 03:42:13,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:13,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:42:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:13,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:42:13,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:42:13,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:42:13,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 106.11111111111111) internal successors, (955), 9 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:13,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:13,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:42:13,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:14,162 INFO L124 PetriNetUnfolderBase]: 1652/3462 cut-off events. [2023-11-29 03:42:14,162 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-29 03:42:14,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 3462 events. 1652/3462 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 19414 event pairs, 406 based on Foata normal form. 0/3186 useless extension candidates. Maximal degree in co-relation 6320. Up to 2374 conditions per place. [2023-11-29 03:42:14,172 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 100 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2023-11-29 03:42:14,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 149 transitions, 539 flow [2023-11-29 03:42:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:42:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 03:42:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2023-11-29 03:42:14,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276276276276276 [2023-11-29 03:42:14,176 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2023-11-29 03:42:14,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2023-11-29 03:42:14,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:14,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2023-11-29 03:42:14,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,181 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,181 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 240 flow. Second operand 9 states and 1045 transitions. [2023-11-29 03:42:14,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 149 transitions, 539 flow [2023-11-29 03:42:14,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 149 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:14,185 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 250 flow [2023-11-29 03:42:14,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2023-11-29 03:42:14,186 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-29 03:42:14,186 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 250 flow [2023-11-29 03:42:14,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.11111111111111) internal successors, (955), 9 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:14,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 03:42:14,187 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:14,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1926805702, now seen corresponding path program 1 times [2023-11-29 03:42:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353974312] [2023-11-29 03:42:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353974312] [2023-11-29 03:42:14,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353974312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:14,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:14,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:42:14,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111395325] [2023-11-29 03:42:14,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:14,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:42:14,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:14,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:42:14,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:42:14,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:42:14,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:14,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:42:14,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:14,856 INFO L124 PetriNetUnfolderBase]: 1380/3071 cut-off events. [2023-11-29 03:42:14,856 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-29 03:42:14,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5525 conditions, 3071 events. 1380/3071 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17695 event pairs, 1089 based on Foata normal form. 0/2782 useless extension candidates. Maximal degree in co-relation 5520. Up to 2233 conditions per place. [2023-11-29 03:42:14,868 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-11-29 03:42:14,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 372 flow [2023-11-29 03:42:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:42:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:42:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2023-11-29 03:42:14,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6837837837837838 [2023-11-29 03:42:14,871 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2023-11-29 03:42:14,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2023-11-29 03:42:14,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:14,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2023-11-29 03:42:14,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,874 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 250 flow. Second operand 4 states and 506 transitions. [2023-11-29 03:42:14,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 372 flow [2023-11-29 03:42:14,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 354 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 03:42:14,877 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 234 flow [2023-11-29 03:42:14,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2023-11-29 03:42:14,878 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -66 predicate places. [2023-11-29 03:42:14,878 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 234 flow [2023-11-29 03:42:14,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:14,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:14,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:14,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 03:42:14,879 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:14,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:14,879 INFO L85 PathProgramCache]: Analyzing trace with hash 398566288, now seen corresponding path program 1 times [2023-11-29 03:42:14,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:14,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144288896] [2023-11-29 03:42:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:14,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144288896] [2023-11-29 03:42:14,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144288896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:14,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:14,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:14,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512758055] [2023-11-29 03:42:14,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:14,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:14,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:15,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:42:15,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:15,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:15,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:42:15,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:15,549 INFO L124 PetriNetUnfolderBase]: 1397/3064 cut-off events. [2023-11-29 03:42:15,549 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-29 03:42:15,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5487 conditions, 3064 events. 1397/3064 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17503 event pairs, 1074 based on Foata normal form. 0/2811 useless extension candidates. Maximal degree in co-relation 5482. Up to 2203 conditions per place. [2023-11-29 03:42:15,558 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 68 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2023-11-29 03:42:15,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 393 flow [2023-11-29 03:42:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:42:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-11-29 03:42:15,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421621621621622 [2023-11-29 03:42:15,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-11-29 03:42:15,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-11-29 03:42:15,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:15,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-11-29 03:42:15,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:15,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:15,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:15,566 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 234 flow. Second operand 5 states and 594 transitions. [2023-11-29 03:42:15,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 393 flow [2023-11-29 03:42:15,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:15,568 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 237 flow [2023-11-29 03:42:15,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2023-11-29 03:42:15,569 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -66 predicate places. [2023-11-29 03:42:15,569 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 237 flow [2023-11-29 03:42:15,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:15,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:15,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:15,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 03:42:15,570 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:15,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash 398566289, now seen corresponding path program 1 times [2023-11-29 03:42:15,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:15,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136900004] [2023-11-29 03:42:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136900004] [2023-11-29 03:42:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136900004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:15,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:15,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665700285] [2023-11-29 03:42:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:16,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:42:16,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:16,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:16,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:42:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:16,548 INFO L124 PetriNetUnfolderBase]: 1380/3023 cut-off events. [2023-11-29 03:42:16,548 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-29 03:42:16,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5441 conditions, 3023 events. 1380/3023 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17187 event pairs, 1074 based on Foata normal form. 24/2794 useless extension candidates. Maximal degree in co-relation 5436. Up to 2204 conditions per place. [2023-11-29 03:42:16,561 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 65 selfloop transitions, 5 changer transitions 0/112 dead transitions. [2023-11-29 03:42:16,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 390 flow [2023-11-29 03:42:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:42:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:42:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 731 transitions. [2023-11-29 03:42:16,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585585585585586 [2023-11-29 03:42:16,564 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 731 transitions. [2023-11-29 03:42:16,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 731 transitions. [2023-11-29 03:42:16,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:16,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 731 transitions. [2023-11-29 03:42:16,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:16,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:16,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:16,570 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 237 flow. Second operand 6 states and 731 transitions. [2023-11-29 03:42:16,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 390 flow [2023-11-29 03:42:16,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:42:16,573 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 233 flow [2023-11-29 03:42:16,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2023-11-29 03:42:16,574 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -67 predicate places. [2023-11-29 03:42:16,574 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 233 flow [2023-11-29 03:42:16,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:16,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:16,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:16,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:42:16,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:16,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash -529378818, now seen corresponding path program 1 times [2023-11-29 03:42:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:16,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262062403] [2023-11-29 03:42:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:16,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:16,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262062403] [2023-11-29 03:42:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262062403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:16,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:16,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590888192] [2023-11-29 03:42:16,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:16,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:16,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:42:16,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:16,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:16,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:42:16,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:17,067 INFO L124 PetriNetUnfolderBase]: 1368/3011 cut-off events. [2023-11-29 03:42:17,068 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-29 03:42:17,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 3011 events. 1368/3011 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 17201 event pairs, 1074 based on Foata normal form. 0/2770 useless extension candidates. Maximal degree in co-relation 5411. Up to 2195 conditions per place. [2023-11-29 03:42:17,081 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 67 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-29 03:42:17,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 386 flow [2023-11-29 03:42:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-11-29 03:42:17,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2023-11-29 03:42:17,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-11-29 03:42:17,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-11-29 03:42:17,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:17,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-11-29 03:42:17,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:17,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:17,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:17,088 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 233 flow. Second operand 3 states and 405 transitions. [2023-11-29 03:42:17,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 386 flow [2023-11-29 03:42:17,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 376 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:42:17,092 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 225 flow [2023-11-29 03:42:17,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2023-11-29 03:42:17,093 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -70 predicate places. [2023-11-29 03:42:17,093 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 225 flow [2023-11-29 03:42:17,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:17,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:17,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:17,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 03:42:17,094 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:17,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:17,095 INFO L85 PathProgramCache]: Analyzing trace with hash -453167144, now seen corresponding path program 1 times [2023-11-29 03:42:17,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335949151] [2023-11-29 03:42:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335949151] [2023-11-29 03:42:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335949151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:18,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:18,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 03:42:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067641423] [2023-11-29 03:42:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:18,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:42:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:42:18,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:42:19,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:42:19,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 225 flow. Second operand has 14 states, 14 states have (on average 105.71428571428571) internal successors, (1480), 14 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:19,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:19,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:42:19,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:20,636 INFO L124 PetriNetUnfolderBase]: 1634/3317 cut-off events. [2023-11-29 03:42:20,636 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-29 03:42:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 3317 events. 1634/3317 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18401 event pairs, 434 based on Foata normal form. 0/3127 useless extension candidates. Maximal degree in co-relation 6160. Up to 1940 conditions per place. [2023-11-29 03:42:20,645 INFO L140 encePairwiseOnDemand]: 171/185 looper letters, 128 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2023-11-29 03:42:20,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 173 transitions, 658 flow [2023-11-29 03:42:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:42:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:42:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1389 transitions. [2023-11-29 03:42:20,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6256756756756757 [2023-11-29 03:42:20,650 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1389 transitions. [2023-11-29 03:42:20,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1389 transitions. [2023-11-29 03:42:20,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:20,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1389 transitions. [2023-11-29 03:42:20,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.75) internal successors, (1389), 12 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:20,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:20,661 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:20,661 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 225 flow. Second operand 12 states and 1389 transitions. [2023-11-29 03:42:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 173 transitions, 658 flow [2023-11-29 03:42:20,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 173 transitions, 654 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:20,665 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 247 flow [2023-11-29 03:42:20,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=247, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2023-11-29 03:42:20,666 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -64 predicate places. [2023-11-29 03:42:20,666 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 247 flow [2023-11-29 03:42:20,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 105.71428571428571) internal successors, (1480), 14 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:20,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:20,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:20,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 03:42:20,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:20,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash 111509212, now seen corresponding path program 1 times [2023-11-29 03:42:20,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:20,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089512331] [2023-11-29 03:42:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:20,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089512331] [2023-11-29 03:42:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089512331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:21,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 03:42:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491943734] [2023-11-29 03:42:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:42:21,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:42:21,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:42:23,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 185 [2023-11-29 03:42:23,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 247 flow. Second operand has 13 states, 13 states have (on average 89.23076923076923) internal successors, (1160), 13 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:23,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:23,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 185 [2023-11-29 03:42:23,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:24,139 INFO L124 PetriNetUnfolderBase]: 1689/3412 cut-off events. [2023-11-29 03:42:24,139 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2023-11-29 03:42:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6521 conditions, 3412 events. 1689/3412 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 19072 event pairs, 466 based on Foata normal form. 12/3226 useless extension candidates. Maximal degree in co-relation 6515. Up to 2056 conditions per place. [2023-11-29 03:42:24,152 INFO L140 encePairwiseOnDemand]: 170/185 looper letters, 127 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2023-11-29 03:42:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 686 flow [2023-11-29 03:42:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:42:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:42:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1185 transitions. [2023-11-29 03:42:24,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337837837837838 [2023-11-29 03:42:24,156 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1185 transitions. [2023-11-29 03:42:24,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1185 transitions. [2023-11-29 03:42:24,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:24,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1185 transitions. [2023-11-29 03:42:24,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 98.75) internal successors, (1185), 12 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:24,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:24,163 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:24,163 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 247 flow. Second operand 12 states and 1185 transitions. [2023-11-29 03:42:24,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 686 flow [2023-11-29 03:42:24,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 664 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 03:42:24,167 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 273 flow [2023-11-29 03:42:24,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=273, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-11-29 03:42:24,167 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-29 03:42:24,167 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 273 flow [2023-11-29 03:42:24,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 89.23076923076923) internal successors, (1160), 13 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:24,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:24,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:24,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 03:42:24,168 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:24,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1281849037, now seen corresponding path program 1 times [2023-11-29 03:42:24,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059194708] [2023-11-29 03:42:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:24,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:25,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:25,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059194708] [2023-11-29 03:42:25,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059194708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:25,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:25,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 03:42:25,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240273835] [2023-11-29 03:42:25,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:25,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:42:25,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:42:25,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:42:26,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:42:26,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 273 flow. Second operand has 15 states, 15 states have (on average 106.33333333333333) internal successors, (1595), 15 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:26,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:26,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:42:26,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:26,907 INFO L124 PetriNetUnfolderBase]: 1846/3643 cut-off events. [2023-11-29 03:42:26,907 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2023-11-29 03:42:26,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7215 conditions, 3643 events. 1846/3643 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 19963 event pairs, 496 based on Foata normal form. 0/3447 useless extension candidates. Maximal degree in co-relation 7206. Up to 1990 conditions per place. [2023-11-29 03:42:26,922 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 162 selfloop transitions, 23 changer transitions 0/217 dead transitions. [2023-11-29 03:42:26,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 217 transitions, 891 flow [2023-11-29 03:42:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:42:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 03:42:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1745 transitions. [2023-11-29 03:42:26,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6288288288288288 [2023-11-29 03:42:26,926 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1745 transitions. [2023-11-29 03:42:26,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1745 transitions. [2023-11-29 03:42:26,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:26,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1745 transitions. [2023-11-29 03:42:26,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.33333333333333) internal successors, (1745), 15 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:26,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:26,935 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:26,935 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 273 flow. Second operand 15 states and 1745 transitions. [2023-11-29 03:42:26,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 217 transitions, 891 flow [2023-11-29 03:42:26,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 217 transitions, 869 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 03:42:26,940 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 333 flow [2023-11-29 03:42:26,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=333, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2023-11-29 03:42:26,940 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -53 predicate places. [2023-11-29 03:42:26,941 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 333 flow [2023-11-29 03:42:26,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 106.33333333333333) internal successors, (1595), 15 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:26,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:26,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:26,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 03:42:26,942 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:26,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1081538355, now seen corresponding path program 1 times [2023-11-29 03:42:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:26,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153421687] [2023-11-29 03:42:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:26,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:27,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:27,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153421687] [2023-11-29 03:42:27,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153421687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:27,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:27,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392812362] [2023-11-29 03:42:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:42:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:42:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:42:27,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:42:27,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:27,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:27,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:42:27,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:27,898 INFO L124 PetriNetUnfolderBase]: 1931/3835 cut-off events. [2023-11-29 03:42:27,898 INFO L125 PetriNetUnfolderBase]: For 616/616 co-relation queries the response was YES. [2023-11-29 03:42:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8344 conditions, 3835 events. 1931/3835 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 21817 event pairs, 1037 based on Foata normal form. 24/3700 useless extension candidates. Maximal degree in co-relation 8333. Up to 2635 conditions per place. [2023-11-29 03:42:27,913 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 96 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2023-11-29 03:42:27,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 140 transitions, 629 flow [2023-11-29 03:42:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:42:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2023-11-29 03:42:27,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962162162162162 [2023-11-29 03:42:27,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2023-11-29 03:42:27,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2023-11-29 03:42:27,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:27,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2023-11-29 03:42:27,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:27,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:27,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:27,919 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 333 flow. Second operand 5 states and 644 transitions. [2023-11-29 03:42:27,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 140 transitions, 629 flow [2023-11-29 03:42:27,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 140 transitions, 589 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 03:42:27,924 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 315 flow [2023-11-29 03:42:27,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2023-11-29 03:42:27,925 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -60 predicate places. [2023-11-29 03:42:27,925 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 315 flow [2023-11-29 03:42:27,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:27,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:27,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 03:42:27,926 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:27,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1971407052, now seen corresponding path program 1 times [2023-11-29 03:42:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834071330] [2023-11-29 03:42:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834071330] [2023-11-29 03:42:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834071330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070883079] [2023-11-29 03:42:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:27,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:27,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:42:27,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:27,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:27,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:42:27,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:28,352 INFO L124 PetriNetUnfolderBase]: 1283/2737 cut-off events. [2023-11-29 03:42:28,352 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-11-29 03:42:28,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5636 conditions, 2737 events. 1283/2737 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 14507 event pairs, 669 based on Foata normal form. 56/2686 useless extension candidates. Maximal degree in co-relation 5624. Up to 1143 conditions per place. [2023-11-29 03:42:28,362 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 80 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2023-11-29 03:42:28,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 516 flow [2023-11-29 03:42:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-11-29 03:42:28,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2023-11-29 03:42:28,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-11-29 03:42:28,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-11-29 03:42:28,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:28,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-11-29 03:42:28,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:28,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:28,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:28,366 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 315 flow. Second operand 3 states and 410 transitions. [2023-11-29 03:42:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 516 flow [2023-11-29 03:42:28,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 123 transitions, 502 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 03:42:28,370 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 311 flow [2023-11-29 03:42:28,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2023-11-29 03:42:28,370 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-29 03:42:28,371 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 311 flow [2023-11-29 03:42:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:28,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:28,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:28,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 03:42:28,371 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:28,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1482005885, now seen corresponding path program 1 times [2023-11-29 03:42:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:28,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748622081] [2023-11-29 03:42:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:28,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:42:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748622081] [2023-11-29 03:42:28,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748622081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:28,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:28,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166493360] [2023-11-29 03:42:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:28,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:42:28,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:28,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:28,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:42:28,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:29,120 INFO L124 PetriNetUnfolderBase]: 1863/4131 cut-off events. [2023-11-29 03:42:29,120 INFO L125 PetriNetUnfolderBase]: For 724/728 co-relation queries the response was YES. [2023-11-29 03:42:29,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8326 conditions, 4131 events. 1863/4131 cut-off events. For 724/728 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 25985 event pairs, 959 based on Foata normal form. 80/4025 useless extension candidates. Maximal degree in co-relation 8313. Up to 1980 conditions per place. [2023-11-29 03:42:29,144 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 116 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2023-11-29 03:42:29,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 160 transitions, 720 flow [2023-11-29 03:42:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-29 03:42:29,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7981981981981981 [2023-11-29 03:42:29,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-29 03:42:29,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-29 03:42:29,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:29,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-29 03:42:29,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,148 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 311 flow. Second operand 3 states and 443 transitions. [2023-11-29 03:42:29,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 160 transitions, 720 flow [2023-11-29 03:42:29,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 160 transitions, 710 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:42:29,155 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 317 flow [2023-11-29 03:42:29,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2023-11-29 03:42:29,155 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -58 predicate places. [2023-11-29 03:42:29,155 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 317 flow [2023-11-29 03:42:29,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:29,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:29,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 03:42:29,156 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:29,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:29,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1950535336, now seen corresponding path program 1 times [2023-11-29 03:42:29,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:29,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883974207] [2023-11-29 03:42:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:29,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883974207] [2023-11-29 03:42:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883974207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:29,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578313799] [2023-11-29 03:42:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:29,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:42:29,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:29,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:42:29,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:29,670 INFO L124 PetriNetUnfolderBase]: 1242/2988 cut-off events. [2023-11-29 03:42:29,670 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2023-11-29 03:42:29,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 2988 events. 1242/2988 cut-off events. For 1003/1003 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 16783 event pairs, 291 based on Foata normal form. 186/3057 useless extension candidates. Maximal degree in co-relation 6582. Up to 1569 conditions per place. [2023-11-29 03:42:29,680 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 73 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-11-29 03:42:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 521 flow [2023-11-29 03:42:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:42:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-11-29 03:42:29,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.736936936936937 [2023-11-29 03:42:29,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-11-29 03:42:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-11-29 03:42:29,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:29,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-11-29 03:42:29,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,682 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 317 flow. Second operand 3 states and 409 transitions. [2023-11-29 03:42:29,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 521 flow [2023-11-29 03:42:29,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:42:29,686 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 327 flow [2023-11-29 03:42:29,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2023-11-29 03:42:29,686 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -57 predicate places. [2023-11-29 03:42:29,686 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 327 flow [2023-11-29 03:42:29,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:29,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:29,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:29,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 03:42:29,687 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:29,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1179189450, now seen corresponding path program 1 times [2023-11-29 03:42:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:29,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677226123] [2023-11-29 03:42:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:29,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677226123] [2023-11-29 03:42:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677226123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:29,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:29,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:29,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754721630] [2023-11-29 03:42:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:29,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:29,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:30,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-29 03:42:30,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:30,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:30,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-29 03:42:30,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:30,506 INFO L124 PetriNetUnfolderBase]: 1242/2858 cut-off events. [2023-11-29 03:42:30,506 INFO L125 PetriNetUnfolderBase]: For 1049/1049 co-relation queries the response was YES. [2023-11-29 03:42:30,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6647 conditions, 2858 events. 1242/2858 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 15578 event pairs, 870 based on Foata normal form. 54/2839 useless extension candidates. Maximal degree in co-relation 6633. Up to 1887 conditions per place. [2023-11-29 03:42:30,515 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 66 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2023-11-29 03:42:30,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 476 flow [2023-11-29 03:42:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:42:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 603 transitions. [2023-11-29 03:42:30,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6518918918918919 [2023-11-29 03:42:30,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 603 transitions. [2023-11-29 03:42:30,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 603 transitions. [2023-11-29 03:42:30,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:30,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 603 transitions. [2023-11-29 03:42:30,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.6) internal successors, (603), 5 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:30,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:30,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:30,519 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 327 flow. Second operand 5 states and 603 transitions. [2023-11-29 03:42:30,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 476 flow [2023-11-29 03:42:30,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:42:30,523 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 321 flow [2023-11-29 03:42:30,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2023-11-29 03:42:30,523 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-29 03:42:30,523 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 321 flow [2023-11-29 03:42:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:30,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:30,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:30,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 03:42:30,524 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:30,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash 162408743, now seen corresponding path program 1 times [2023-11-29 03:42:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:30,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839145050] [2023-11-29 03:42:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:32,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839145050] [2023-11-29 03:42:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839145050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:32,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:32,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 03:42:32,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317834419] [2023-11-29 03:42:32,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:32,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:42:32,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:32,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:42:32,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:42:34,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 185 [2023-11-29 03:42:34,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 321 flow. Second operand has 18 states, 18 states have (on average 78.44444444444444) internal successors, (1412), 18 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:34,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:34,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 185 [2023-11-29 03:42:34,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:35,719 INFO L124 PetriNetUnfolderBase]: 1516/3263 cut-off events. [2023-11-29 03:42:35,719 INFO L125 PetriNetUnfolderBase]: For 1155/1157 co-relation queries the response was YES. [2023-11-29 03:42:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7632 conditions, 3263 events. 1516/3263 cut-off events. For 1155/1157 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 16455 event pairs, 226 based on Foata normal form. 0/3166 useless extension candidates. Maximal degree in co-relation 7617. Up to 975 conditions per place. [2023-11-29 03:42:35,733 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 172 selfloop transitions, 20 changer transitions 0/217 dead transitions. [2023-11-29 03:42:35,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 217 transitions, 1073 flow [2023-11-29 03:42:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:42:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 03:42:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1394 transitions. [2023-11-29 03:42:35,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47094594594594597 [2023-11-29 03:42:35,735 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1394 transitions. [2023-11-29 03:42:35,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1394 transitions. [2023-11-29 03:42:35,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:35,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1394 transitions. [2023-11-29 03:42:35,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.125) internal successors, (1394), 16 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:35,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 185.0) internal successors, (3145), 17 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:35,741 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 185.0) internal successors, (3145), 17 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:35,741 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 321 flow. Second operand 16 states and 1394 transitions. [2023-11-29 03:42:35,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 217 transitions, 1073 flow [2023-11-29 03:42:35,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 217 transitions, 1061 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:42:35,748 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 396 flow [2023-11-29 03:42:35,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=396, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2023-11-29 03:42:35,749 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -44 predicate places. [2023-11-29 03:42:35,749 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 396 flow [2023-11-29 03:42:35,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 78.44444444444444) internal successors, (1412), 18 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:35,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:35,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:35,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 03:42:35,750 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:35,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash -913711358, now seen corresponding path program 1 times [2023-11-29 03:42:35,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:35,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960036416] [2023-11-29 03:42:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:42:35,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960036416] [2023-11-29 03:42:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960036416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272969916] [2023-11-29 03:42:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:35,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:35,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:35,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:35,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:42:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:35,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:42:35,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:42:36,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:42:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272969916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:36,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:42:36,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-29 03:42:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372945865] [2023-11-29 03:42:36,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:42:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:42:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:42:36,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:42:36,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 396 flow. Second operand has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:36,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:36,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:42:36,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:37,251 INFO L124 PetriNetUnfolderBase]: 3346/6916 cut-off events. [2023-11-29 03:42:37,251 INFO L125 PetriNetUnfolderBase]: For 3226/3243 co-relation queries the response was YES. [2023-11-29 03:42:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 6916 events. 3346/6916 cut-off events. For 3226/3243 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 42951 event pairs, 388 based on Foata normal form. 392/7111 useless extension candidates. Maximal degree in co-relation 16711. Up to 1421 conditions per place. [2023-11-29 03:42:37,279 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 275 selfloop transitions, 6 changer transitions 0/319 dead transitions. [2023-11-29 03:42:37,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 319 transitions, 1808 flow [2023-11-29 03:42:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:42:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:42:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 906 transitions. [2023-11-29 03:42:37,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8162162162162162 [2023-11-29 03:42:37,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 906 transitions. [2023-11-29 03:42:37,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 906 transitions. [2023-11-29 03:42:37,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:37,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 906 transitions. [2023-11-29 03:42:37,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:37,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:37,284 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:37,284 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 396 flow. Second operand 6 states and 906 transitions. [2023-11-29 03:42:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 319 transitions, 1808 flow [2023-11-29 03:42:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 319 transitions, 1708 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-29 03:42:37,293 INFO L231 Difference]: Finished difference. Result has 129 places, 112 transitions, 407 flow [2023-11-29 03:42:37,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=129, PETRI_TRANSITIONS=112} [2023-11-29 03:42:37,294 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -46 predicate places. [2023-11-29 03:42:37,294 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 112 transitions, 407 flow [2023-11-29 03:42:37,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:37,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:37,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:37,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:42:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:37,495 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:37,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1660877036, now seen corresponding path program 1 times [2023-11-29 03:42:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475650629] [2023-11-29 03:42:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475650629] [2023-11-29 03:42:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475650629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467232782] [2023-11-29 03:42:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:42:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:42:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:42:37,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:42:37,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 112 transitions, 407 flow. Second operand has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:37,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:37,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:42:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:38,654 INFO L124 PetriNetUnfolderBase]: 2730/6237 cut-off events. [2023-11-29 03:42:38,654 INFO L125 PetriNetUnfolderBase]: For 5263/5287 co-relation queries the response was YES. [2023-11-29 03:42:38,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16073 conditions, 6237 events. 2730/6237 cut-off events. For 5263/5287 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 40048 event pairs, 1882 based on Foata normal form. 13/6042 useless extension candidates. Maximal degree in co-relation 16051. Up to 4046 conditions per place. [2023-11-29 03:42:38,688 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 125 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-11-29 03:42:38,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 166 transitions, 860 flow [2023-11-29 03:42:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:42:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:42:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-11-29 03:42:38,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7378378378378379 [2023-11-29 03:42:38,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-11-29 03:42:38,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-11-29 03:42:38,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:38,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-11-29 03:42:38,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 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) [2023-11-29 03:42:38,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:38,692 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:38,692 INFO L175 Difference]: Start difference. First operand has 129 places, 112 transitions, 407 flow. Second operand 4 states and 546 transitions. [2023-11-29 03:42:38,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 166 transitions, 860 flow [2023-11-29 03:42:38,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 166 transitions, 852 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-29 03:42:38,708 INFO L231 Difference]: Finished difference. Result has 132 places, 112 transitions, 409 flow [2023-11-29 03:42:38,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2023-11-29 03:42:38,709 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -43 predicate places. [2023-11-29 03:42:38,709 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 409 flow [2023-11-29 03:42:38,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:38,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:38,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 03:42:38,710 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:38,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1165428318, now seen corresponding path program 1 times [2023-11-29 03:42:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475465196] [2023-11-29 03:42:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:40,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475465196] [2023-11-29 03:42:40,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475465196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:40,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:40,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 03:42:40,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034127] [2023-11-29 03:42:40,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:40,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:42:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:42:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:42:42,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 185 [2023-11-29 03:42:42,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 409 flow. Second operand has 20 states, 20 states have (on average 104.6) internal successors, (2092), 20 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:42,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:42,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 185 [2023-11-29 03:42:42,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:43,497 INFO L124 PetriNetUnfolderBase]: 2820/6264 cut-off events. [2023-11-29 03:42:43,497 INFO L125 PetriNetUnfolderBase]: For 5438/5438 co-relation queries the response was YES. [2023-11-29 03:42:43,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16408 conditions, 6264 events. 2820/6264 cut-off events. For 5438/5438 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 38378 event pairs, 512 based on Foata normal form. 0/6174 useless extension candidates. Maximal degree in co-relation 16384. Up to 2048 conditions per place. [2023-11-29 03:42:43,525 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 198 selfloop transitions, 22 changer transitions 0/248 dead transitions. [2023-11-29 03:42:43,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 248 transitions, 1543 flow [2023-11-29 03:42:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:42:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 03:42:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1913 transitions. [2023-11-29 03:42:43,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6082670906200318 [2023-11-29 03:42:43,527 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1913 transitions. [2023-11-29 03:42:43,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1913 transitions. [2023-11-29 03:42:43,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:43,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1913 transitions. [2023-11-29 03:42:43,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 112.52941176470588) internal successors, (1913), 17 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:43,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:43,533 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:43,533 INFO L175 Difference]: Start difference. First operand has 132 places, 112 transitions, 409 flow. Second operand 17 states and 1913 transitions. [2023-11-29 03:42:43,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 248 transitions, 1543 flow [2023-11-29 03:42:43,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 248 transitions, 1493 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 03:42:43,549 INFO L231 Difference]: Finished difference. Result has 147 places, 113 transitions, 457 flow [2023-11-29 03:42:43,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=457, PETRI_PLACES=147, PETRI_TRANSITIONS=113} [2023-11-29 03:42:43,550 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -28 predicate places. [2023-11-29 03:42:43,550 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 113 transitions, 457 flow [2023-11-29 03:42:43,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.6) internal successors, (2092), 20 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:43,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 03:42:43,551 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:43,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1593475317, now seen corresponding path program 1 times [2023-11-29 03:42:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320444693] [2023-11-29 03:42:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:47,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:47,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320444693] [2023-11-29 03:42:47,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320444693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:47,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:47,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:42:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034455656] [2023-11-29 03:42:47,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:47,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:42:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:42:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:42:51,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:42:51,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 113 transitions, 457 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:51,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:42:51,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:42:51,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:42:54,861 INFO L124 PetriNetUnfolderBase]: 3063/6881 cut-off events. [2023-11-29 03:42:54,861 INFO L125 PetriNetUnfolderBase]: For 5859/5863 co-relation queries the response was YES. [2023-11-29 03:42:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18389 conditions, 6881 events. 3063/6881 cut-off events. For 5859/5863 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 44023 event pairs, 877 based on Foata normal form. 0/6769 useless extension candidates. Maximal degree in co-relation 18363. Up to 4701 conditions per place. [2023-11-29 03:42:54,899 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 182 selfloop transitions, 50 changer transitions 0/262 dead transitions. [2023-11-29 03:42:54,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 262 transitions, 1532 flow [2023-11-29 03:42:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:42:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:42:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3096 transitions. [2023-11-29 03:42:54,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976833976833977 [2023-11-29 03:42:54,905 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3096 transitions. [2023-11-29 03:42:54,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3096 transitions. [2023-11-29 03:42:54,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:42:54,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3096 transitions. [2023-11-29 03:42:54,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 110.57142857142857) internal successors, (3096), 28 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:54,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:54,919 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:54,919 INFO L175 Difference]: Start difference. First operand has 147 places, 113 transitions, 457 flow. Second operand 28 states and 3096 transitions. [2023-11-29 03:42:54,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 262 transitions, 1532 flow [2023-11-29 03:42:54,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 262 transitions, 1461 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-29 03:42:54,938 INFO L231 Difference]: Finished difference. Result has 175 places, 162 transitions, 892 flow [2023-11-29 03:42:54,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=892, PETRI_PLACES=175, PETRI_TRANSITIONS=162} [2023-11-29 03:42:54,939 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 0 predicate places. [2023-11-29 03:42:54,939 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 162 transitions, 892 flow [2023-11-29 03:42:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:42:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:42:54,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 03:42:54,940 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:42:54,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash 840630573, now seen corresponding path program 2 times [2023-11-29 03:42:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247729778] [2023-11-29 03:42:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:42:58,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:58,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247729778] [2023-11-29 03:42:58,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247729778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:58,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:58,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-29 03:42:58,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782023591] [2023-11-29 03:42:58,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:58,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:42:58,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:58,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:42:58,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:43:04,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:43:04,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 162 transitions, 892 flow. Second operand has 28 states, 28 states have (on average 104.85714285714286) internal successors, (2936), 28 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:04,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:04,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:43:04,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:43:07,353 INFO L124 PetriNetUnfolderBase]: 3382/7489 cut-off events. [2023-11-29 03:43:07,353 INFO L125 PetriNetUnfolderBase]: For 7920/7926 co-relation queries the response was YES. [2023-11-29 03:43:07,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21317 conditions, 7489 events. 3382/7489 cut-off events. For 7920/7926 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 48625 event pairs, 1163 based on Foata normal form. 6/7366 useless extension candidates. Maximal degree in co-relation 21277. Up to 4987 conditions per place. [2023-11-29 03:43:07,407 INFO L140 encePairwiseOnDemand]: 156/185 looper letters, 231 selfloop transitions, 57 changer transitions 0/318 dead transitions. [2023-11-29 03:43:07,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 318 transitions, 2169 flow [2023-11-29 03:43:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:43:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 03:43:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3614 transitions. [2023-11-29 03:43:07,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591973791973792 [2023-11-29 03:43:07,413 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3614 transitions. [2023-11-29 03:43:07,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3614 transitions. [2023-11-29 03:43:07,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:43:07,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3614 transitions. [2023-11-29 03:43:07,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 109.51515151515152) internal successors, (3614), 33 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:07,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:07,426 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:07,426 INFO L175 Difference]: Start difference. First operand has 175 places, 162 transitions, 892 flow. Second operand 33 states and 3614 transitions. [2023-11-29 03:43:07,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 318 transitions, 2169 flow [2023-11-29 03:43:07,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 318 transitions, 2163 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 03:43:07,458 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 1411 flow [2023-11-29 03:43:07,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1411, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2023-11-29 03:43:07,458 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 42 predicate places. [2023-11-29 03:43:07,458 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 1411 flow [2023-11-29 03:43:07,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 104.85714285714286) internal successors, (2936), 28 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:07,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:07,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:07,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 03:43:07,459 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:43:07,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1485458647, now seen corresponding path program 3 times [2023-11-29 03:43:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744441571] [2023-11-29 03:43:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744441571] [2023-11-29 03:43:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744441571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:09,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:43:09,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615736073] [2023-11-29 03:43:09,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:09,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:43:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:43:09,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:43:14,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:43:14,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 1411 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:14,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:14,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:43:14,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:43:17,204 INFO L124 PetriNetUnfolderBase]: 3612/8103 cut-off events. [2023-11-29 03:43:17,204 INFO L125 PetriNetUnfolderBase]: For 11763/11765 co-relation queries the response was YES. [2023-11-29 03:43:17,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24878 conditions, 8103 events. 3612/8103 cut-off events. For 11763/11765 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 54386 event pairs, 1020 based on Foata normal form. 0/7981 useless extension candidates. Maximal degree in co-relation 24825. Up to 5771 conditions per place. [2023-11-29 03:43:17,274 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 262 selfloop transitions, 51 changer transitions 0/343 dead transitions. [2023-11-29 03:43:17,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 343 transitions, 2729 flow [2023-11-29 03:43:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:43:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:43:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3083 transitions. [2023-11-29 03:43:17,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5951737451737452 [2023-11-29 03:43:17,280 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3083 transitions. [2023-11-29 03:43:17,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3083 transitions. [2023-11-29 03:43:17,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:43:17,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3083 transitions. [2023-11-29 03:43:17,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 110.10714285714286) internal successors, (3083), 28 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:17,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:17,291 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:17,291 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 1411 flow. Second operand 28 states and 3083 transitions. [2023-11-29 03:43:17,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 343 transitions, 2729 flow [2023-11-29 03:43:17,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 343 transitions, 2638 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-11-29 03:43:17,340 INFO L231 Difference]: Finished difference. Result has 255 places, 255 transitions, 1927 flow [2023-11-29 03:43:17,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1927, PETRI_PLACES=255, PETRI_TRANSITIONS=255} [2023-11-29 03:43:17,341 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 80 predicate places. [2023-11-29 03:43:17,341 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 255 transitions, 1927 flow [2023-11-29 03:43:17,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:17,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:17,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:17,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 03:43:17,342 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:43:17,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1751706305, now seen corresponding path program 4 times [2023-11-29 03:43:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624965802] [2023-11-29 03:43:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624965802] [2023-11-29 03:43:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624965802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:20,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:20,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:43:20,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686801589] [2023-11-29 03:43:20,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:20,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:43:20,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:43:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:43:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:43:24,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 255 transitions, 1927 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:24,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:24,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:43:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:43:28,519 INFO L124 PetriNetUnfolderBase]: 3930/8701 cut-off events. [2023-11-29 03:43:28,519 INFO L125 PetriNetUnfolderBase]: For 16924/16930 co-relation queries the response was YES. [2023-11-29 03:43:28,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28587 conditions, 8701 events. 3930/8701 cut-off events. For 16924/16930 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 59048 event pairs, 1267 based on Foata normal form. 6/8566 useless extension candidates. Maximal degree in co-relation 28519. Up to 5973 conditions per place. [2023-11-29 03:43:28,585 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 312 selfloop transitions, 58 changer transitions 0/400 dead transitions. [2023-11-29 03:43:28,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 400 transitions, 3511 flow [2023-11-29 03:43:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 03:43:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 03:43:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3405 transitions. [2023-11-29 03:43:28,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5937227550130776 [2023-11-29 03:43:28,590 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3405 transitions. [2023-11-29 03:43:28,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3405 transitions. [2023-11-29 03:43:28,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:43:28,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3405 transitions. [2023-11-29 03:43:28,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 109.83870967741936) internal successors, (3405), 31 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:28,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 185.0) internal successors, (5920), 32 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:28,601 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 185.0) internal successors, (5920), 32 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:28,601 INFO L175 Difference]: Start difference. First operand has 255 places, 255 transitions, 1927 flow. Second operand 31 states and 3405 transitions. [2023-11-29 03:43:28,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 400 transitions, 3511 flow [2023-11-29 03:43:28,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 400 transitions, 3351 flow, removed 76 selfloop flow, removed 3 redundant places. [2023-11-29 03:43:28,662 INFO L231 Difference]: Finished difference. Result has 294 places, 293 transitions, 2407 flow [2023-11-29 03:43:28,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2407, PETRI_PLACES=294, PETRI_TRANSITIONS=293} [2023-11-29 03:43:28,663 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 119 predicate places. [2023-11-29 03:43:28,663 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 293 transitions, 2407 flow [2023-11-29 03:43:28,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:28,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:28,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:28,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 03:43:28,664 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:43:28,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1868097919, now seen corresponding path program 5 times [2023-11-29 03:43:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:28,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629131461] [2023-11-29 03:43:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629131461] [2023-11-29 03:43:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629131461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:31,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:43:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175786170] [2023-11-29 03:43:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:43:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:43:31,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:43:37,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:43:37,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 293 transitions, 2407 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:37,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:37,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:43:37,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:43:41,286 INFO L124 PetriNetUnfolderBase]: 4155/9298 cut-off events. [2023-11-29 03:43:41,286 INFO L125 PetriNetUnfolderBase]: For 23459/23459 co-relation queries the response was YES. [2023-11-29 03:43:41,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32148 conditions, 9298 events. 4155/9298 cut-off events. For 23459/23459 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 64696 event pairs, 1120 based on Foata normal form. 0/9162 useless extension candidates. Maximal degree in co-relation 32067. Up to 6464 conditions per place. [2023-11-29 03:43:41,386 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 343 selfloop transitions, 63 changer transitions 0/436 dead transitions. [2023-11-29 03:43:41,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 436 transitions, 4139 flow [2023-11-29 03:43:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:43:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:43:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3091 transitions. [2023-11-29 03:43:41,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5967181467181467 [2023-11-29 03:43:41,502 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3091 transitions. [2023-11-29 03:43:41,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3091 transitions. [2023-11-29 03:43:41,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:43:41,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3091 transitions. [2023-11-29 03:43:41,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 110.39285714285714) internal successors, (3091), 28 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:41,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:41,514 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:41,514 INFO L175 Difference]: Start difference. First operand has 294 places, 293 transitions, 2407 flow. Second operand 28 states and 3091 transitions. [2023-11-29 03:43:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 436 transitions, 4139 flow [2023-11-29 03:43:41,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 436 transitions, 3912 flow, removed 98 selfloop flow, removed 8 redundant places. [2023-11-29 03:43:41,603 INFO L231 Difference]: Finished difference. Result has 324 places, 335 transitions, 2942 flow [2023-11-29 03:43:41,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2942, PETRI_PLACES=324, PETRI_TRANSITIONS=335} [2023-11-29 03:43:41,604 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 149 predicate places. [2023-11-29 03:43:41,604 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 335 transitions, 2942 flow [2023-11-29 03:43:41,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:41,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:41,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:41,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 03:43:41,605 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:43:41,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1296386803, now seen corresponding path program 6 times [2023-11-29 03:43:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:41,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47041032] [2023-11-29 03:43:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:44,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:44,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47041032] [2023-11-29 03:43:44,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47041032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:44,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:44,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:43:44,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611595139] [2023-11-29 03:43:44,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:44,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:43:44,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:43:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:43:49,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:43:49,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 335 transitions, 2942 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:49,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:43:49,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:43:49,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:43:53,762 INFO L124 PetriNetUnfolderBase]: 4461/9975 cut-off events. [2023-11-29 03:43:53,762 INFO L125 PetriNetUnfolderBase]: For 32000/32000 co-relation queries the response was YES. [2023-11-29 03:43:53,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36208 conditions, 9975 events. 4461/9975 cut-off events. For 32000/32000 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 70498 event pairs, 1059 based on Foata normal form. 0/9847 useless extension candidates. Maximal degree in co-relation 36115. Up to 5227 conditions per place. [2023-11-29 03:43:53,847 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 402 selfloop transitions, 91 changer transitions 0/523 dead transitions. [2023-11-29 03:43:53,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 523 transitions, 5258 flow [2023-11-29 03:43:53,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 03:43:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 03:43:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3436 transitions. [2023-11-29 03:43:53,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599128160418483 [2023-11-29 03:43:53,852 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3436 transitions. [2023-11-29 03:43:53,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3436 transitions. [2023-11-29 03:43:53,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:43:53,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3436 transitions. [2023-11-29 03:43:53,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 110.83870967741936) internal successors, (3436), 31 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:53,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 185.0) internal successors, (5920), 32 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:54,000 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 185.0) internal successors, (5920), 32 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:54,000 INFO L175 Difference]: Start difference. First operand has 324 places, 335 transitions, 2942 flow. Second operand 31 states and 3436 transitions. [2023-11-29 03:43:54,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 523 transitions, 5258 flow [2023-11-29 03:43:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 523 transitions, 4904 flow, removed 154 selfloop flow, removed 7 redundant places. [2023-11-29 03:43:54,158 INFO L231 Difference]: Finished difference. Result has 362 places, 378 transitions, 3533 flow [2023-11-29 03:43:54,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3533, PETRI_PLACES=362, PETRI_TRANSITIONS=378} [2023-11-29 03:43:54,158 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 187 predicate places. [2023-11-29 03:43:54,158 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 378 transitions, 3533 flow [2023-11-29 03:43:54,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:43:54,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:43:54,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:54,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 03:43:54,159 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:43:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1067038799, now seen corresponding path program 7 times [2023-11-29 03:43:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448145714] [2023-11-29 03:43:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:43:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:56,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448145714] [2023-11-29 03:43:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448145714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:56,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:56,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:43:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865680075] [2023-11-29 03:43:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:56,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:43:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:43:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:44:01,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:44:01,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 378 transitions, 3533 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:01,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:44:01,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:44:01,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:44:06,360 INFO L124 PetriNetUnfolderBase]: 4653/10370 cut-off events. [2023-11-29 03:44:06,361 INFO L125 PetriNetUnfolderBase]: For 60160/60164 co-relation queries the response was YES. [2023-11-29 03:44:06,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41652 conditions, 10370 events. 4653/10370 cut-off events. For 60160/60164 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 74018 event pairs, 1083 based on Foata normal form. 4/10242 useless extension candidates. Maximal degree in co-relation 41543. Up to 5770 conditions per place. [2023-11-29 03:44:06,447 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 438 selfloop transitions, 75 changer transitions 0/543 dead transitions. [2023-11-29 03:44:06,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 543 transitions, 5876 flow [2023-11-29 03:44:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:44:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:44:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3118 transitions. [2023-11-29 03:44:06,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6019305019305019 [2023-11-29 03:44:06,451 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3118 transitions. [2023-11-29 03:44:06,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3118 transitions. [2023-11-29 03:44:06,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:44:06,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3118 transitions. [2023-11-29 03:44:06,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.35714285714286) internal successors, (3118), 28 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:06,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:06,457 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:06,457 INFO L175 Difference]: Start difference. First operand has 362 places, 378 transitions, 3533 flow. Second operand 28 states and 3118 transitions. [2023-11-29 03:44:06,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 543 transitions, 5876 flow [2023-11-29 03:44:06,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 543 transitions, 5430 flow, removed 181 selfloop flow, removed 9 redundant places. [2023-11-29 03:44:06,820 INFO L231 Difference]: Finished difference. Result has 398 places, 411 transitions, 4004 flow [2023-11-29 03:44:06,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4004, PETRI_PLACES=398, PETRI_TRANSITIONS=411} [2023-11-29 03:44:06,821 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 223 predicate places. [2023-11-29 03:44:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 411 transitions, 4004 flow [2023-11-29 03:44:06,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:06,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:44:06,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:44:06,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 03:44:06,822 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:44:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -770560897, now seen corresponding path program 8 times [2023-11-29 03:44:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:06,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242649852] [2023-11-29 03:44:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:06,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:44:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242649852] [2023-11-29 03:44:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242649852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:44:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:44:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-29 03:44:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132374809] [2023-11-29 03:44:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:44:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:44:09,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:44:14,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:44:14,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 411 transitions, 4004 flow. Second operand has 28 states, 28 states have (on average 104.85714285714286) internal successors, (2936), 28 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:14,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:44:14,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:44:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:44:20,360 INFO L124 PetriNetUnfolderBase]: 4821/10747 cut-off events. [2023-11-29 03:44:20,360 INFO L125 PetriNetUnfolderBase]: For 104246/104248 co-relation queries the response was YES. [2023-11-29 03:44:20,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46803 conditions, 10747 events. 4821/10747 cut-off events. For 104246/104248 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 77417 event pairs, 1023 based on Foata normal form. 2/10647 useless extension candidates. Maximal degree in co-relation 46676. Up to 5566 conditions per place. [2023-11-29 03:44:20,486 INFO L140 encePairwiseOnDemand]: 157/185 looper letters, 423 selfloop transitions, 150 changer transitions 0/603 dead transitions. [2023-11-29 03:44:20,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 603 transitions, 6802 flow [2023-11-29 03:44:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 03:44:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-29 03:44:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3759 transitions. [2023-11-29 03:44:20,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976152623211447 [2023-11-29 03:44:20,490 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3759 transitions. [2023-11-29 03:44:20,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3759 transitions. [2023-11-29 03:44:20,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:44:20,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3759 transitions. [2023-11-29 03:44:20,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 110.55882352941177) internal successors, (3759), 34 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:20,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 185.0) internal successors, (6475), 35 states have internal predecessors, (6475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:20,502 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 185.0) internal successors, (6475), 35 states have internal predecessors, (6475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:20,502 INFO L175 Difference]: Start difference. First operand has 398 places, 411 transitions, 4004 flow. Second operand 34 states and 3759 transitions. [2023-11-29 03:44:20,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 603 transitions, 6802 flow [2023-11-29 03:44:21,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 603 transitions, 6278 flow, removed 239 selfloop flow, removed 7 redundant places. [2023-11-29 03:44:21,312 INFO L231 Difference]: Finished difference. Result has 429 places, 454 transitions, 4876 flow [2023-11-29 03:44:21,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4876, PETRI_PLACES=429, PETRI_TRANSITIONS=454} [2023-11-29 03:44:21,312 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 254 predicate places. [2023-11-29 03:44:21,313 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 454 transitions, 4876 flow [2023-11-29 03:44:21,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 104.85714285714286) internal successors, (2936), 28 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:21,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:44:21,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:44:21,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 03:44:21,313 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:44:21,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash 648262883, now seen corresponding path program 9 times [2023-11-29 03:44:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:21,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999141329] [2023-11-29 03:44:21,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:21,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:44:24,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999141329] [2023-11-29 03:44:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999141329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:44:24,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:44:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:44:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73409070] [2023-11-29 03:44:24,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:24,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:44:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:44:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:44:29,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:44:29,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 454 transitions, 4876 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:29,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:44:29,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:44:29,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:44:35,080 INFO L124 PetriNetUnfolderBase]: 4981/11091 cut-off events. [2023-11-29 03:44:35,080 INFO L125 PetriNetUnfolderBase]: For 118127/118129 co-relation queries the response was YES. [2023-11-29 03:44:35,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49744 conditions, 11091 events. 4981/11091 cut-off events. For 118127/118129 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 80689 event pairs, 1015 based on Foata normal form. 2/10989 useless extension candidates. Maximal degree in co-relation 49611. Up to 5006 conditions per place. [2023-11-29 03:44:35,243 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 430 selfloop transitions, 187 changer transitions 0/647 dead transitions. [2023-11-29 03:44:35,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 647 transitions, 7629 flow [2023-11-29 03:44:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:44:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 03:44:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3665 transitions. [2023-11-29 03:44:35,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003276003276004 [2023-11-29 03:44:35,247 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3665 transitions. [2023-11-29 03:44:35,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3665 transitions. [2023-11-29 03:44:35,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:44:35,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3665 transitions. [2023-11-29 03:44:35,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 111.06060606060606) internal successors, (3665), 33 states have internal predecessors, (3665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:35,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:35,256 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:35,256 INFO L175 Difference]: Start difference. First operand has 429 places, 454 transitions, 4876 flow. Second operand 33 states and 3665 transitions. [2023-11-29 03:44:35,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 647 transitions, 7629 flow [2023-11-29 03:44:36,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 647 transitions, 6518 flow, removed 493 selfloop flow, removed 13 redundant places. [2023-11-29 03:44:36,568 INFO L231 Difference]: Finished difference. Result has 460 places, 479 transitions, 5033 flow [2023-11-29 03:44:36,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5033, PETRI_PLACES=460, PETRI_TRANSITIONS=479} [2023-11-29 03:44:36,569 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 285 predicate places. [2023-11-29 03:44:36,569 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 479 transitions, 5033 flow [2023-11-29 03:44:36,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:36,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:44:36,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:44:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 03:44:36,570 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:44:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash -558964371, now seen corresponding path program 10 times [2023-11-29 03:44:36,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:36,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660580839] [2023-11-29 03:44:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:44:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:39,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660580839] [2023-11-29 03:44:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660580839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:44:39,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:44:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-29 03:44:39,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603045724] [2023-11-29 03:44:39,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:39,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:44:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:44:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:44:44,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:44:44,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 479 transitions, 5033 flow. Second operand has 28 states, 28 states have (on average 104.85714285714286) internal successors, (2936), 28 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:44,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:44:44,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:44:44,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:44:50,679 INFO L124 PetriNetUnfolderBase]: 5180/11422 cut-off events. [2023-11-29 03:44:50,679 INFO L125 PetriNetUnfolderBase]: For 85210/85212 co-relation queries the response was YES. [2023-11-29 03:44:50,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49102 conditions, 11422 events. 5180/11422 cut-off events. For 85210/85212 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 83542 event pairs, 610 based on Foata normal form. 2/11326 useless extension candidates. Maximal degree in co-relation 48957. Up to 3501 conditions per place. [2023-11-29 03:44:50,802 INFO L140 encePairwiseOnDemand]: 154/185 looper letters, 493 selfloop transitions, 223 changer transitions 0/746 dead transitions. [2023-11-29 03:44:50,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 746 transitions, 8561 flow [2023-11-29 03:44:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 03:44:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-29 03:44:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4438 transitions. [2023-11-29 03:44:50,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5997297297297297 [2023-11-29 03:44:50,808 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4438 transitions. [2023-11-29 03:44:50,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4438 transitions. [2023-11-29 03:44:50,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:44:50,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4438 transitions. [2023-11-29 03:44:50,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 110.95) internal successors, (4438), 40 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:50,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 185.0) internal successors, (7585), 41 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:50,821 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 185.0) internal successors, (7585), 41 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:50,821 INFO L175 Difference]: Start difference. First operand has 460 places, 479 transitions, 5033 flow. Second operand 40 states and 4438 transitions. [2023-11-29 03:44:50,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 746 transitions, 8561 flow [2023-11-29 03:44:51,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 746 transitions, 7998 flow, removed 172 selfloop flow, removed 17 redundant places. [2023-11-29 03:44:51,580 INFO L231 Difference]: Finished difference. Result has 493 places, 533 transitions, 6234 flow [2023-11-29 03:44:51,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6234, PETRI_PLACES=493, PETRI_TRANSITIONS=533} [2023-11-29 03:44:51,581 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 318 predicate places. [2023-11-29 03:44:51,581 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 533 transitions, 6234 flow [2023-11-29 03:44:51,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 104.85714285714286) internal successors, (2936), 28 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:44:51,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:44:51,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:44:51,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 03:44:51,582 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:44:51,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1931401427, now seen corresponding path program 11 times [2023-11-29 03:44:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:51,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310756660] [2023-11-29 03:44:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:51,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:44:54,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:54,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310756660] [2023-11-29 03:44:54,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310756660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:44:54,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:44:54,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:44:54,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157867274] [2023-11-29 03:44:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:44:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:44:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:45:01,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:45:01,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 533 transitions, 6234 flow. Second operand has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:01,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:01,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:45:01,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:07,793 INFO L124 PetriNetUnfolderBase]: 5131/11343 cut-off events. [2023-11-29 03:45:07,793 INFO L125 PetriNetUnfolderBase]: For 94516/94518 co-relation queries the response was YES. [2023-11-29 03:45:07,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50374 conditions, 11343 events. 5131/11343 cut-off events. For 94516/94518 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 82789 event pairs, 752 based on Foata normal form. 2/11230 useless extension candidates. Maximal degree in co-relation 50217. Up to 4910 conditions per place. [2023-11-29 03:45:07,947 INFO L140 encePairwiseOnDemand]: 158/185 looper letters, 523 selfloop transitions, 210 changer transitions 0/763 dead transitions. [2023-11-29 03:45:07,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 763 transitions, 9687 flow [2023-11-29 03:45:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:45:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 03:45:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3880 transitions. [2023-11-29 03:45:07,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992277992277992 [2023-11-29 03:45:07,952 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3880 transitions. [2023-11-29 03:45:07,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3880 transitions. [2023-11-29 03:45:07,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:07,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3880 transitions. [2023-11-29 03:45:07,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 110.85714285714286) internal successors, (3880), 35 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:07,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 185.0) internal successors, (6660), 36 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:07,962 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 185.0) internal successors, (6660), 36 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:07,962 INFO L175 Difference]: Start difference. First operand has 493 places, 533 transitions, 6234 flow. Second operand 35 states and 3880 transitions. [2023-11-29 03:45:07,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 763 transitions, 9687 flow [2023-11-29 03:45:09,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 763 transitions, 8645 flow, removed 377 selfloop flow, removed 26 redundant places. [2023-11-29 03:45:09,053 INFO L231 Difference]: Finished difference. Result has 506 places, 571 transitions, 6607 flow [2023-11-29 03:45:09,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5296, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6607, PETRI_PLACES=506, PETRI_TRANSITIONS=571} [2023-11-29 03:45:09,054 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 331 predicate places. [2023-11-29 03:45:09,054 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 571 transitions, 6607 flow [2023-11-29 03:45:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 104.92592592592592) internal successors, (2833), 27 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:09,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:09,054 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:09,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 03:45:09,055 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:09,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1969062866, now seen corresponding path program 1 times [2023-11-29 03:45:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:09,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023670836] [2023-11-29 03:45:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:09,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:09,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:09,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023670836] [2023-11-29 03:45:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023670836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:09,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446127394] [2023-11-29 03:45:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:09,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:09,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:09,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:09,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:45:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:09,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:45:09,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:09,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:09,807 INFO L378 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 [2023-11-29 03:45:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:10,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446127394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:10,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:45:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 03:45:10,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728232292] [2023-11-29 03:45:10,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:10,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:45:10,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:45:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:45:10,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:45:10,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 571 transitions, 6607 flow. Second operand has 17 states, 17 states have (on average 117.6470588235294) internal successors, (2000), 17 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:10,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:10,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:45:10,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:15,880 INFO L124 PetriNetUnfolderBase]: 5762/12961 cut-off events. [2023-11-29 03:45:15,881 INFO L125 PetriNetUnfolderBase]: For 84349/84408 co-relation queries the response was YES. [2023-11-29 03:45:15,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54592 conditions, 12961 events. 5762/12961 cut-off events. For 84349/84408 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 98996 event pairs, 1367 based on Foata normal form. 17/12809 useless extension candidates. Maximal degree in co-relation 54435. Up to 3550 conditions per place. [2023-11-29 03:45:16,029 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 658 selfloop transitions, 150 changer transitions 0/883 dead transitions. [2023-11-29 03:45:16,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 883 transitions, 10759 flow [2023-11-29 03:45:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:45:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:45:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1884 transitions. [2023-11-29 03:45:16,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7274131274131274 [2023-11-29 03:45:16,031 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1884 transitions. [2023-11-29 03:45:16,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1884 transitions. [2023-11-29 03:45:16,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:16,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1884 transitions. [2023-11-29 03:45:16,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 134.57142857142858) internal successors, (1884), 14 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:16,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:16,036 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 185.0) internal successors, (2775), 15 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:16,036 INFO L175 Difference]: Start difference. First operand has 506 places, 571 transitions, 6607 flow. Second operand 14 states and 1884 transitions. [2023-11-29 03:45:16,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 883 transitions, 10759 flow [2023-11-29 03:45:16,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 883 transitions, 10251 flow, removed 178 selfloop flow, removed 15 redundant places. [2023-11-29 03:45:16,831 INFO L231 Difference]: Finished difference. Result has 512 places, 605 transitions, 7146 flow [2023-11-29 03:45:16,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6156, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7146, PETRI_PLACES=512, PETRI_TRANSITIONS=605} [2023-11-29 03:45:16,832 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 337 predicate places. [2023-11-29 03:45:16,832 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 605 transitions, 7146 flow [2023-11-29 03:45:16,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 117.6470588235294) internal successors, (2000), 17 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:16,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:16,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:16,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:45:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:17,033 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:17,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1447817014, now seen corresponding path program 2 times [2023-11-29 03:45:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786462321] [2023-11-29 03:45:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786462321] [2023-11-29 03:45:17,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786462321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443235544] [2023-11-29 03:45:17,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:45:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:17,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:17,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:45:17,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:45:17,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:17,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:45:17,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:17,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:17,464 INFO L378 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 [2023-11-29 03:45:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:18,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443235544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:18,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:45:18,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-11-29 03:45:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403942328] [2023-11-29 03:45:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:18,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:45:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:18,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:45:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:45:18,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-29 03:45:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 605 transitions, 7146 flow. Second operand has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:18,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-29 03:45:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:23,618 INFO L124 PetriNetUnfolderBase]: 7281/15457 cut-off events. [2023-11-29 03:45:23,619 INFO L125 PetriNetUnfolderBase]: For 109178/109206 co-relation queries the response was YES. [2023-11-29 03:45:23,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65748 conditions, 15457 events. 7281/15457 cut-off events. For 109178/109206 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 116243 event pairs, 1163 based on Foata normal form. 36/15324 useless extension candidates. Maximal degree in co-relation 65582. Up to 6011 conditions per place. [2023-11-29 03:45:23,807 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 546 selfloop transitions, 114 changer transitions 0/733 dead transitions. [2023-11-29 03:45:23,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 733 transitions, 9693 flow [2023-11-29 03:45:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:45:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:45:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-11-29 03:45:23,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2023-11-29 03:45:23,809 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-11-29 03:45:23,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-11-29 03:45:23,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:23,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-11-29 03:45:23,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:23,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:23,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:23,811 INFO L175 Difference]: Start difference. First operand has 512 places, 605 transitions, 7146 flow. Second operand 6 states and 820 transitions. [2023-11-29 03:45:23,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 733 transitions, 9693 flow [2023-11-29 03:45:25,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 733 transitions, 9142 flow, removed 114 selfloop flow, removed 13 redundant places. [2023-11-29 03:45:25,020 INFO L231 Difference]: Finished difference. Result has 504 places, 605 transitions, 6981 flow [2023-11-29 03:45:25,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6650, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6981, PETRI_PLACES=504, PETRI_TRANSITIONS=605} [2023-11-29 03:45:25,021 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 329 predicate places. [2023-11-29 03:45:25,021 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 605 transitions, 6981 flow [2023-11-29 03:45:25,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:25,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:25,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:25,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:45:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:25,222 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:25,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1612628902, now seen corresponding path program 1 times [2023-11-29 03:45:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216142917] [2023-11-29 03:45:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:45:25,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:45:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:45:25,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:45:25,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:45:25,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (141 of 142 remaining) [2023-11-29 03:45:25,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 142 remaining) [2023-11-29 03:45:25,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 142 remaining) [2023-11-29 03:45:25,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 142 remaining) [2023-11-29 03:45:25,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 142 remaining) [2023-11-29 03:45:25,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 142 remaining) [2023-11-29 03:45:25,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 142 remaining) [2023-11-29 03:45:25,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 142 remaining) [2023-11-29 03:45:25,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 142 remaining) [2023-11-29 03:45:25,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 142 remaining) [2023-11-29 03:45:25,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 142 remaining) [2023-11-29 03:45:25,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 142 remaining) [2023-11-29 03:45:25,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 142 remaining) [2023-11-29 03:45:25,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (128 of 142 remaining) [2023-11-29 03:45:25,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (121 of 142 remaining) [2023-11-29 03:45:25,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 142 remaining) [2023-11-29 03:45:25,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (119 of 142 remaining) [2023-11-29 03:45:25,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 142 remaining) [2023-11-29 03:45:25,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 142 remaining) [2023-11-29 03:45:25,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 142 remaining) [2023-11-29 03:45:25,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 142 remaining) [2023-11-29 03:45:25,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 142 remaining) [2023-11-29 03:45:25,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 142 remaining) [2023-11-29 03:45:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 142 remaining) [2023-11-29 03:45:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 142 remaining) [2023-11-29 03:45:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 142 remaining) [2023-11-29 03:45:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 142 remaining) [2023-11-29 03:45:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 142 remaining) [2023-11-29 03:45:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (98 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 142 remaining) [2023-11-29 03:45:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 142 remaining) [2023-11-29 03:45:25,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 142 remaining) [2023-11-29 03:45:25,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 142 remaining) [2023-11-29 03:45:25,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 142 remaining) [2023-11-29 03:45:25,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 142 remaining) [2023-11-29 03:45:25,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 142 remaining) [2023-11-29 03:45:25,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 142 remaining) [2023-11-29 03:45:25,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 142 remaining) [2023-11-29 03:45:25,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 142 remaining) [2023-11-29 03:45:25,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 142 remaining) [2023-11-29 03:45:25,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (59 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 142 remaining) [2023-11-29 03:45:25,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 142 remaining) [2023-11-29 03:45:25,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 142 remaining) [2023-11-29 03:45:25,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 142 remaining) [2023-11-29 03:45:25,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 142 remaining) [2023-11-29 03:45:25,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 142 remaining) [2023-11-29 03:45:25,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 142 remaining) [2023-11-29 03:45:25,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 142 remaining) [2023-11-29 03:45:25,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (38 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 142 remaining) [2023-11-29 03:45:25,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 142 remaining) [2023-11-29 03:45:25,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 142 remaining) [2023-11-29 03:45:25,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 142 remaining) [2023-11-29 03:45:25,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 142 remaining) [2023-11-29 03:45:25,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 142 remaining) [2023-11-29 03:45:25,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 142 remaining) [2023-11-29 03:45:25,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 142 remaining) [2023-11-29 03:45:25,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 142 remaining) [2023-11-29 03:45:25,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 142 remaining) [2023-11-29 03:45:25,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 142 remaining) [2023-11-29 03:45:25,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 142 remaining) [2023-11-29 03:45:25,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 142 remaining) [2023-11-29 03:45:25,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 142 remaining) [2023-11-29 03:45:25,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 142 remaining) [2023-11-29 03:45:25,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 142 remaining) [2023-11-29 03:45:25,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 142 remaining) [2023-11-29 03:45:25,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-29 03:45:25,398 INFO L445 BasicCegarLoop]: Path program histogram: [11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:25,405 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 03:45:25,406 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:45:25,498 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated [2023-11-29 03:45:25,499 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated [2023-11-29 03:45:25,501 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-29 03:45:25,501 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-29 03:45:25,502 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-29 03:45:25,502 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-29 03:45:25,504 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-29 03:45:25,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-29 03:45:25,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-29 03:45:25,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-29 03:45:25,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-11-29 03:45:25,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated [2023-11-29 03:45:25,508 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-11-29 03:45:25,508 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated [2023-11-29 03:45:25,508 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated [2023-11-29 03:45:25,509 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-11-29 03:45:25,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:45:25 BasicIcfg [2023-11-29 03:45:25,523 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:45:25,523 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:45:25,524 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:45:25,524 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:45:25,525 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:41:57" (3/4) ... [2023-11-29 03:45:25,527 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 03:45:25,528 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:45:25,529 INFO L158 Benchmark]: Toolchain (without parser) took 209975.72ms. Allocated memory was 144.7MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 106.0MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2023-11-29 03:45:25,529 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory is still 114.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:45:25,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.09ms. Allocated memory is still 144.7MB. Free memory was 106.0MB in the beginning and 75.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-29 03:45:25,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.60ms. Allocated memory is still 144.7MB. Free memory was 75.4MB in the beginning and 72.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:45:25,530 INFO L158 Benchmark]: Boogie Preprocessor took 78.15ms. Allocated memory is still 144.7MB. Free memory was 72.1MB in the beginning and 68.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:45:25,531 INFO L158 Benchmark]: RCFGBuilder took 1024.51ms. Allocated memory was 144.7MB in the beginning and 186.6MB in the end (delta: 41.9MB). Free memory was 68.7MB in the beginning and 105.5MB in the end (delta: -36.8MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2023-11-29 03:45:25,531 INFO L158 Benchmark]: TraceAbstraction took 208224.27ms. Allocated memory was 186.6MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 105.5MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2023-11-29 03:45:25,531 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 5.2GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:45:25,533 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory is still 114.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.09ms. Allocated memory is still 144.7MB. Free memory was 106.0MB in the beginning and 75.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.60ms. Allocated memory is still 144.7MB. Free memory was 75.4MB in the beginning and 72.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.15ms. Allocated memory is still 144.7MB. Free memory was 72.1MB in the beginning and 68.7MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1024.51ms. Allocated memory was 144.7MB in the beginning and 186.6MB in the end (delta: 41.9MB). Free memory was 68.7MB in the beginning and 105.5MB in the end (delta: -36.8MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * TraceAbstraction took 208224.27ms. Allocated memory was 186.6MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 105.5MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 5.2GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(400)]; [L949] 0 int stored_elements[(400)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L955] 0 q->tail=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1062] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={6:0}, id2={7:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1063] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={6:0}, id2={7:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1007] 1 int value, i; VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1036] 2 int i; [L1037] 2 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(400) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L982] COND FALSE 1 !(q->tail == (400)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1018] 1 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1018] COND TRUE 1 i<((400)-1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L1037] 2 i++ VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(400) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=1, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=1] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L982] COND FALSE 1 !(q->tail == (400)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=1, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=1] [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L996] 2 q->amount-- [L997] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L997] COND FALSE 2 !(q->head == (400)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] CALL 2 reach_error() [L21] COND FALSE 2 !(0) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L21] 2 __assert_fail ("0", "queue_longer.c", 4, __extension__ __PRETTY_FUNCTION__) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 301 locations, 142 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 207.9s, OverallIterations: 46, TraceHistogramMax: 2, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 161.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39968 SdHoareTripleChecker+Valid, 96.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34961 mSDsluCounter, 150103 SdHoareTripleChecker+Invalid, 84.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148692 mSDsCounter, 569 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179503 IncrementalHoareTripleChecker+Invalid, 180072 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 569 mSolverCounterUnsat, 1411 mSDtfsCounter, 179503 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1084 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 686 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5559 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7146occurred in iteration=44, InterpolantAutomatonStates: 558, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 43.1s InterpolantComputationTime, 2002 NumberOfCodeBlocks, 2002 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 2005 ConstructedInterpolants, 0 QuantifiedInterpolants, 31782 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1431 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 50 InterpolantComputations, 43 PerfectInterpolantSequences, 12/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 03:45:25,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:45:27,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:45:27,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 03:45:27,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:45:27,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:45:27,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:45:27,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:45:27,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:45:27,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:45:27,858 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:45:27,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:45:27,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:45:27,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:45:27,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:45:27,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:45:27,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:45:27,863 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:45:27,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:45:27,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:45:27,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:45:27,865 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:45:27,866 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:45:27,866 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:45:27,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:45:27,867 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:45:27,868 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 03:45:27,868 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 03:45:27,868 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:45:27,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:45:27,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:45:27,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:45:27,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:45:27,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:45:27,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:45:27,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:45:27,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:45:27,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:45:27,872 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 03:45:27,872 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 03:45:27,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:45:27,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:45:27,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:45:27,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:45:27,873 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 03:45:27,874 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_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-29 03:45:28,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:45:28,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:45:28,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:45:28,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:45:28,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:45:28,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-29 03:45:31,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:45:31,321 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:45:31,322 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/sv-benchmarks/c/pthread/queue_longer.i [2023-11-29 03:45:31,338 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data/c990e02ce/ecedb92e75f040f4b93fd9aa6db887ab/FLAGc77ee1c24 [2023-11-29 03:45:31,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/data/c990e02ce/ecedb92e75f040f4b93fd9aa6db887ab [2023-11-29 03:45:31,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:45:31,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:45:31,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:45:31,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:45:31,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:45:31,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:31,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cbfba71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31, skipping insertion in model container [2023-11-29 03:45:31,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:31,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:45:31,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:45:31,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:45:31,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:45:31,993 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:45:31,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31 WrapperNode [2023-11-29 03:45:31,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:45:31,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:45:31,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:45:31,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:45:32,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,055 INFO L138 Inliner]: procedures = 279, calls = 66, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 254 [2023-11-29 03:45:32,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:45:32,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:45:32,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:45:32,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:45:32,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,094 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 5, 4, 2, 32, 2]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0, 0]. The 20 writes are split as follows [0, 0, 3, 1, 15, 1]. [2023-11-29 03:45:32,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:45:32,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:45:32,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:45:32,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:45:32,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (1/1) ... [2023-11-29 03:45:32,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:45:32,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:32,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:45:32,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:45:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 03:45:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 03:45:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 03:45:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 03:45:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 03:45:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-11-29 03:45:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 03:45:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 03:45:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 03:45:32,191 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 03:45:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:45:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:45:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 03:45:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 03:45:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 03:45:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 03:45:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 03:45:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-11-29 03:45:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 03:45:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 03:45:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 03:45:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 03:45:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 03:45:32,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-29 03:45:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-29 03:45:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-29 03:45:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-29 03:45:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-29 03:45:32,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-29 03:45:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-11-29 03:45:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 03:45:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 03:45:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:45:32,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:45:32,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:45:32,214 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:45:32,385 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:45:32,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:45:33,117 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:45:33,343 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:45:33,343 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:45:33,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:45:33 BoogieIcfgContainer [2023-11-29 03:45:33,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:45:33,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:45:33,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:45:33,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:45:33,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:45:31" (1/3) ... [2023-11-29 03:45:33,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ac844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:45:33, skipping insertion in model container [2023-11-29 03:45:33,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:45:31" (2/3) ... [2023-11-29 03:45:33,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ac844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:45:33, skipping insertion in model container [2023-11-29 03:45:33,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:45:33" (3/3) ... [2023-11-29 03:45:33,351 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-29 03:45:33,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:45:33,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2023-11-29 03:45:33,367 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:45:33,504 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:45:33,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 185 transitions, 384 flow [2023-11-29 03:45:33,599 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-29 03:45:33,599 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:45:33,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 14/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 586 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-11-29 03:45:33,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 185 transitions, 384 flow [2023-11-29 03:45:33,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 182 transitions, 376 flow [2023-11-29 03:45:33,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:45:33,648 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;@6892303f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:45:33,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 142 error locations. [2023-11-29 03:45:33,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:45:33,651 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 03:45:33,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:45:33,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:33,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:45:33,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:33,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:33,659 INFO L85 PathProgramCache]: Analyzing trace with hash 22516, now seen corresponding path program 1 times [2023-11-29 03:45:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209539556] [2023-11-29 03:45:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:33,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:33,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:33,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 03:45:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:33,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:45:33,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:33,976 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 03:45:33,977 INFO L378 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 27 [2023-11-29 03:45:34,030 INFO L349 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2023-11-29 03:45:34,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 27 [2023-11-29 03:45:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:34,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:34,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209539556] [2023-11-29 03:45:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209539556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:34,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:34,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:34,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394087924] [2023-11-29 03:45:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:34,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:34,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:34,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:45:34,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 182 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:45:34,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:35,623 INFO L124 PetriNetUnfolderBase]: 1802/4901 cut-off events. [2023-11-29 03:45:35,623 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-29 03:45:35,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7846 conditions, 4901 events. 1802/4901 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 39712 event pairs, 1441 based on Foata normal form. 188/3766 useless extension candidates. Maximal degree in co-relation 7652. Up to 2863 conditions per place. [2023-11-29 03:45:35,667 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2023-11-29 03:45:35,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 167 transitions, 470 flow [2023-11-29 03:45:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:35,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-29 03:45:35,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7153153153153153 [2023-11-29 03:45:35,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-29 03:45:35,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-29 03:45:35,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:35,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-29 03:45:35,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:35,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:35,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:35,699 INFO L175 Difference]: Start difference. First operand has 175 places, 182 transitions, 376 flow. Second operand 3 states and 397 transitions. [2023-11-29 03:45:35,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 167 transitions, 470 flow [2023-11-29 03:45:35,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 167 transitions, 462 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:45:35,710 INFO L231 Difference]: Finished difference. Result has 164 places, 167 transitions, 342 flow [2023-11-29 03:45:35,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=164, PETRI_TRANSITIONS=167} [2023-11-29 03:45:35,714 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -11 predicate places. [2023-11-29 03:45:35,715 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 167 transitions, 342 flow [2023-11-29 03:45:35,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:35,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:35,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:45:35,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:35,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:35,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:35,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 22517, now seen corresponding path program 1 times [2023-11-29 03:45:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:35,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230026168] [2023-11-29 03:45:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:35,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:35,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:35,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:35,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 03:45:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:36,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:45:36,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:36,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:36,081 INFO L378 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 [2023-11-29 03:45:36,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:36,110 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-11-29 03:45:36,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 03:45:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:36,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:36,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230026168] [2023-11-29 03:45:36,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230026168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:36,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126360082] [2023-11-29 03:45:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:36,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:36,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:36,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:45:36,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 167 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:36,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:36,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:45:36,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:37,298 INFO L124 PetriNetUnfolderBase]: 1802/4898 cut-off events. [2023-11-29 03:45:37,298 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 03:45:37,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7796 conditions, 4898 events. 1802/4898 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39699 event pairs, 1441 based on Foata normal form. 3/3580 useless extension candidates. Maximal degree in co-relation 7785. Up to 2863 conditions per place. [2023-11-29 03:45:37,352 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2023-11-29 03:45:37,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 164 transitions, 460 flow [2023-11-29 03:45:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-29 03:45:37,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063063063063063 [2023-11-29 03:45:37,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-29 03:45:37,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-29 03:45:37,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:37,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-29 03:45:37,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:37,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:37,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:37,363 INFO L175 Difference]: Start difference. First operand has 164 places, 167 transitions, 342 flow. Second operand 3 states and 392 transitions. [2023-11-29 03:45:37,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 164 transitions, 460 flow [2023-11-29 03:45:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 164 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:37,370 INFO L231 Difference]: Finished difference. Result has 161 places, 164 transitions, 336 flow [2023-11-29 03:45:37,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=161, PETRI_TRANSITIONS=164} [2023-11-29 03:45:37,371 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -14 predicate places. [2023-11-29 03:45:37,372 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 164 transitions, 336 flow [2023-11-29 03:45:37,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:37,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:37,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:45:37,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:37,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:37,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:37,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:37,574 INFO L85 PathProgramCache]: Analyzing trace with hash 671459682, now seen corresponding path program 1 times [2023-11-29 03:45:37,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:37,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274077977] [2023-11-29 03:45:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:37,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:37,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:37,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:37,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 03:45:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:37,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:45:37,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:37,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:37,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:37,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274077977] [2023-11-29 03:45:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274077977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:37,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:45:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696279975] [2023-11-29 03:45:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:37,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:45:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:45:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:45:37,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:45:37,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 164 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:37,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:37,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:45:37,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:38,770 INFO L124 PetriNetUnfolderBase]: 1802/4896 cut-off events. [2023-11-29 03:45:38,770 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 03:45:38,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7795 conditions, 4896 events. 1802/4896 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39706 event pairs, 1441 based on Foata normal form. 0/3578 useless extension candidates. Maximal degree in co-relation 7784. Up to 2862 conditions per place. [2023-11-29 03:45:38,813 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 60 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2023-11-29 03:45:38,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 458 flow [2023-11-29 03:45:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:45:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:45:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 501 transitions. [2023-11-29 03:45:38,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.677027027027027 [2023-11-29 03:45:38,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 501 transitions. [2023-11-29 03:45:38,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 501 transitions. [2023-11-29 03:45:38,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:38,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 501 transitions. [2023-11-29 03:45:38,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:38,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:38,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:38,822 INFO L175 Difference]: Start difference. First operand has 161 places, 164 transitions, 336 flow. Second operand 4 states and 501 transitions. [2023-11-29 03:45:38,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 458 flow [2023-11-29 03:45:38,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:38,826 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 334 flow [2023-11-29 03:45:38,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-11-29 03:45:38,828 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -15 predicate places. [2023-11-29 03:45:38,828 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 334 flow [2023-11-29 03:45:38,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:38,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:38,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:45:38,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 03:45:39,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:39,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:39,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 671459683, now seen corresponding path program 1 times [2023-11-29 03:45:39,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:39,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632553013] [2023-11-29 03:45:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:39,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:39,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:39,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:39,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 03:45:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:39,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:45:39,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:39,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:39,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632553013] [2023-11-29 03:45:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632553013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:39,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:45:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294497312] [2023-11-29 03:45:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:39,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:45:39,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:45:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:45:40,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-29 03:45:40,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:40,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:40,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-29 03:45:40,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:41,127 INFO L124 PetriNetUnfolderBase]: 1802/4894 cut-off events. [2023-11-29 03:45:41,127 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 03:45:41,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7795 conditions, 4894 events. 1802/4894 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 39686 event pairs, 1441 based on Foata normal form. 2/3578 useless extension candidates. Maximal degree in co-relation 7778. Up to 2861 conditions per place. [2023-11-29 03:45:41,151 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 61 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2023-11-29 03:45:41,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 160 transitions, 458 flow [2023-11-29 03:45:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:45:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:45:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-11-29 03:45:41,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6497297297297298 [2023-11-29 03:45:41,154 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-11-29 03:45:41,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-11-29 03:45:41,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:41,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-11-29 03:45:41,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:41,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:41,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:41,159 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 334 flow. Second operand 5 states and 601 transitions. [2023-11-29 03:45:41,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 160 transitions, 458 flow [2023-11-29 03:45:41,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 160 transitions, 452 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:45:41,162 INFO L231 Difference]: Finished difference. Result has 159 places, 160 transitions, 330 flow [2023-11-29 03:45:41,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=159, PETRI_TRANSITIONS=160} [2023-11-29 03:45:41,163 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -16 predicate places. [2023-11-29 03:45:41,163 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 160 transitions, 330 flow [2023-11-29 03:45:41,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:41,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:41,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:41,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 03:45:41,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:41,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:41,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash -241994613, now seen corresponding path program 1 times [2023-11-29 03:45:41,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:41,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092102684] [2023-11-29 03:45:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:41,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:41,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:41,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:41,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 03:45:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:41,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:45:41,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:41,602 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 03:45:41,603 INFO L378 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 03:45:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:41,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:41,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092102684] [2023-11-29 03:45:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092102684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:41,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441536162] [2023-11-29 03:45:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:41,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:41,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:41,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:41,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-29 03:45:41,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 160 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:41,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:41,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-29 03:45:41,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:42,719 INFO L124 PetriNetUnfolderBase]: 2911/7283 cut-off events. [2023-11-29 03:45:42,719 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-29 03:45:42,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11784 conditions, 7283 events. 2911/7283 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 61435 event pairs, 2376 based on Foata normal form. 0/5470 useless extension candidates. Maximal degree in co-relation 11769. Up to 4464 conditions per place. [2023-11-29 03:45:42,777 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 62 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-29 03:45:42,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 158 transitions, 454 flow [2023-11-29 03:45:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-29 03:45:42,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 03:45:42,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-29 03:45:42,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-29 03:45:42,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:42,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-29 03:45:42,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:42,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:42,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:42,785 INFO L175 Difference]: Start difference. First operand has 159 places, 160 transitions, 330 flow. Second operand 3 states and 390 transitions. [2023-11-29 03:45:42,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 158 transitions, 454 flow [2023-11-29 03:45:42,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 158 transitions, 449 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 03:45:42,789 INFO L231 Difference]: Finished difference. Result has 156 places, 158 transitions, 325 flow [2023-11-29 03:45:42,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=156, PETRI_TRANSITIONS=158} [2023-11-29 03:45:42,791 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -19 predicate places. [2023-11-29 03:45:42,791 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 158 transitions, 325 flow [2023-11-29 03:45:42,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:42,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:42,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:42,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 03:45:42,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:42,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:42,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash -241994612, now seen corresponding path program 1 times [2023-11-29 03:45:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246708387] [2023-11-29 03:45:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:42,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:42,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:43,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 03:45:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:43,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:45:43,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:43,178 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 03:45:43,178 INFO L378 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 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 03:45:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:43,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:43,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246708387] [2023-11-29 03:45:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246708387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:43,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895332088] [2023-11-29 03:45:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:43,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:43,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:45:43,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 158 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:43,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:43,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:45:43,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:44,144 INFO L124 PetriNetUnfolderBase]: 1802/4832 cut-off events. [2023-11-29 03:45:44,144 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:45:44,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 4832 events. 1802/4832 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 38902 event pairs, 1441 based on Foata normal form. 493/4069 useless extension candidates. Maximal degree in co-relation 7721. Up to 2862 conditions per place. [2023-11-29 03:45:44,166 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2023-11-29 03:45:44,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 445 flow [2023-11-29 03:45:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-29 03:45:44,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7099099099099099 [2023-11-29 03:45:44,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-29 03:45:44,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-29 03:45:44,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:44,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-29 03:45:44,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:44,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:44,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:44,173 INFO L175 Difference]: Start difference. First operand has 156 places, 158 transitions, 325 flow. Second operand 3 states and 394 transitions. [2023-11-29 03:45:44,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 445 flow [2023-11-29 03:45:44,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 156 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:44,175 INFO L231 Difference]: Finished difference. Result has 154 places, 156 transitions, 321 flow [2023-11-29 03:45:44,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=154, PETRI_TRANSITIONS=156} [2023-11-29 03:45:44,176 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -21 predicate places. [2023-11-29 03:45:44,177 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 156 transitions, 321 flow [2023-11-29 03:45:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:44,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:44,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:44,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 03:45:44,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:44,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:44,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1989489951, now seen corresponding path program 1 times [2023-11-29 03:45:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862457011] [2023-11-29 03:45:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:44,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:44,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:44,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 03:45:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:44,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:45:44,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:44,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:45:44,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:44,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:45:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:44,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:44,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:44,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862457011] [2023-11-29 03:45:44,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862457011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:44,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:44,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652002490] [2023-11-29 03:45:44,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:44,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:44,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:45:44,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 156 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:44,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:44,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:45:44,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:45,352 INFO L124 PetriNetUnfolderBase]: 1802/4814 cut-off events. [2023-11-29 03:45:45,352 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:45:45,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 4814 events. 1802/4814 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 38675 event pairs, 1441 based on Foata normal form. 46/3622 useless extension candidates. Maximal degree in co-relation 7703. Up to 2862 conditions per place. [2023-11-29 03:45:45,373 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 60 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-11-29 03:45:45,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 441 flow [2023-11-29 03:45:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-29 03:45:45,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7099099099099099 [2023-11-29 03:45:45,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-29 03:45:45,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-29 03:45:45,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:45,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-29 03:45:45,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:45,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:45,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:45,379 INFO L175 Difference]: Start difference. First operand has 154 places, 156 transitions, 321 flow. Second operand 3 states and 394 transitions. [2023-11-29 03:45:45,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 441 flow [2023-11-29 03:45:45,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:45,383 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 317 flow [2023-11-29 03:45:45,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2023-11-29 03:45:45,384 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -23 predicate places. [2023-11-29 03:45:45,384 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 317 flow [2023-11-29 03:45:45,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:45,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:45,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:45,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 03:45:45,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:45,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:45,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1989489950, now seen corresponding path program 1 times [2023-11-29 03:45:45,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:45,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525969691] [2023-11-29 03:45:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:45,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:45,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:45,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:45,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 03:45:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:45,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:45:45,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:45,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 03:45:45,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:45,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:45:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:45,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:45,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:45,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525969691] [2023-11-29 03:45:45,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525969691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:45,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:45,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:45,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50697162] [2023-11-29 03:45:45,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:45,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:45,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:45,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 185 [2023-11-29 03:45:45,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:45,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:45,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 185 [2023-11-29 03:45:45,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:46,479 INFO L124 PetriNetUnfolderBase]: 1854/4930 cut-off events. [2023-11-29 03:45:46,479 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-29 03:45:46,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7927 conditions, 4930 events. 1854/4930 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 39424 event pairs, 1485 based on Foata normal form. 0/3678 useless extension candidates. Maximal degree in co-relation 7917. Up to 2960 conditions per place. [2023-11-29 03:45:46,495 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 62 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-11-29 03:45:46,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 152 transitions, 441 flow [2023-11-29 03:45:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-29 03:45:46,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 03:45:46,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-29 03:45:46,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-29 03:45:46,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:46,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-29 03:45:46,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:46,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:46,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:46,501 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 317 flow. Second operand 3 states and 390 transitions. [2023-11-29 03:45:46,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 152 transitions, 441 flow [2023-11-29 03:45:46,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:46,503 INFO L231 Difference]: Finished difference. Result has 150 places, 152 transitions, 313 flow [2023-11-29 03:45:46,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=150, PETRI_TRANSITIONS=152} [2023-11-29 03:45:46,504 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -25 predicate places. [2023-11-29 03:45:46,504 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 152 transitions, 313 flow [2023-11-29 03:45:46,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:46,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:46,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:46,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 03:45:46,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:46,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:46,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:46,706 INFO L85 PathProgramCache]: Analyzing trace with hash 644429435, now seen corresponding path program 1 times [2023-11-29 03:45:46,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:46,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902596595] [2023-11-29 03:45:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:46,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:46,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:46,707 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:46,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 03:45:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:46,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:45:46,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:46,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:46,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902596595] [2023-11-29 03:45:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902596595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:46,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:46,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:45:46,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618662423] [2023-11-29 03:45:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:45:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:45:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:45:47,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 185 [2023-11-29 03:45:47,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 152 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:47,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:47,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 185 [2023-11-29 03:45:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:47,900 INFO L124 PetriNetUnfolderBase]: 2139/4727 cut-off events. [2023-11-29 03:45:47,900 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 03:45:47,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8184 conditions, 4727 events. 2139/4727 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 33824 event pairs, 751 based on Foata normal form. 0/4153 useless extension candidates. Maximal degree in co-relation 8174. Up to 1929 conditions per place. [2023-11-29 03:45:47,918 INFO L140 encePairwiseOnDemand]: 162/185 looper letters, 83 selfloop transitions, 7 changer transitions 0/156 dead transitions. [2023-11-29 03:45:47,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 156 transitions, 502 flow [2023-11-29 03:45:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:45:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:45:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2023-11-29 03:45:47,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902702702702702 [2023-11-29 03:45:47,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2023-11-29 03:45:47,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2023-11-29 03:45:47,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:47,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2023-11-29 03:45:47,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 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) [2023-11-29 03:45:47,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:47,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:47,925 INFO L175 Difference]: Start difference. First operand has 150 places, 152 transitions, 313 flow. Second operand 5 states and 546 transitions. [2023-11-29 03:45:47,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 156 transitions, 502 flow [2023-11-29 03:45:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 156 transitions, 498 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:47,929 INFO L231 Difference]: Finished difference. Result has 136 places, 136 transitions, 291 flow [2023-11-29 03:45:47,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=136, PETRI_TRANSITIONS=136} [2023-11-29 03:45:47,929 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -39 predicate places. [2023-11-29 03:45:47,929 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 136 transitions, 291 flow [2023-11-29 03:45:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:47,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:47,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:47,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:48,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:48,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:48,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 644429436, now seen corresponding path program 1 times [2023-11-29 03:45:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373994679] [2023-11-29 03:45:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:48,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:48,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:48,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:48,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 03:45:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:45:48,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:48,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:48,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373994679] [2023-11-29 03:45:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373994679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:48,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:48,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:45:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113722273] [2023-11-29 03:45:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:45:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:45:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:45:49,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 185 [2023-11-29 03:45:49,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 136 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 185 [2023-11-29 03:45:49,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:49,677 INFO L124 PetriNetUnfolderBase]: 1802/4039 cut-off events. [2023-11-29 03:45:49,677 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-29 03:45:49,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7085 conditions, 4039 events. 1802/4039 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 28225 event pairs, 742 based on Foata normal form. 216/3706 useless extension candidates. Maximal degree in co-relation 7068. Up to 1486 conditions per place. [2023-11-29 03:45:49,692 INFO L140 encePairwiseOnDemand]: 169/185 looper letters, 78 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2023-11-29 03:45:49,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 146 transitions, 480 flow [2023-11-29 03:45:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:45:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:45:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 589 transitions. [2023-11-29 03:45:49,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6367567567567568 [2023-11-29 03:45:49,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 589 transitions. [2023-11-29 03:45:49,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 589 transitions. [2023-11-29 03:45:49,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:49,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 589 transitions. [2023-11-29 03:45:49,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:49,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:49,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:49,698 INFO L175 Difference]: Start difference. First operand has 136 places, 136 transitions, 291 flow. Second operand 5 states and 589 transitions. [2023-11-29 03:45:49,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 146 transitions, 480 flow [2023-11-29 03:45:49,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 146 transitions, 466 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:45:49,702 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 269 flow [2023-11-29 03:45:49,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2023-11-29 03:45:49,703 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -49 predicate places. [2023-11-29 03:45:49,703 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 269 flow [2023-11-29 03:45:49,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:49,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:49,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:49,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 03:45:49,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:49,904 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:49,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:49,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1497523195, now seen corresponding path program 1 times [2023-11-29 03:45:49,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:49,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482150771] [2023-11-29 03:45:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:49,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:49,906 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:49,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 03:45:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:50,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:45:50,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:50,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:45:50,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:45:50,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:45:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:50,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:50,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:50,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482150771] [2023-11-29 03:45:50,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482150771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:50,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:45:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164034699] [2023-11-29 03:45:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:50,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:45:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:50,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:45:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:45:51,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2023-11-29 03:45:51,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 269 flow. Second operand has 7 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:51,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:51,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2023-11-29 03:45:51,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:51,913 INFO L124 PetriNetUnfolderBase]: 2502/5536 cut-off events. [2023-11-29 03:45:51,913 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-29 03:45:51,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9696 conditions, 5536 events. 2502/5536 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 40737 event pairs, 536 based on Foata normal form. 0/4539 useless extension candidates. Maximal degree in co-relation 9680. Up to 3437 conditions per place. [2023-11-29 03:45:51,934 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 126 selfloop transitions, 11 changer transitions 0/193 dead transitions. [2023-11-29 03:45:51,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 193 transitions, 682 flow [2023-11-29 03:45:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:45:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 03:45:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 797 transitions. [2023-11-29 03:45:51,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6154440154440154 [2023-11-29 03:45:51,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 797 transitions. [2023-11-29 03:45:51,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 797 transitions. [2023-11-29 03:45:51,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:51,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 797 transitions. [2023-11-29 03:45:51,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:51,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:51,942 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:51,942 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 269 flow. Second operand 7 states and 797 transitions. [2023-11-29 03:45:51,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 193 transitions, 682 flow [2023-11-29 03:45:51,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 193 transitions, 668 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:45:51,946 INFO L231 Difference]: Finished difference. Result has 132 places, 136 transitions, 331 flow [2023-11-29 03:45:51,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=132, PETRI_TRANSITIONS=136} [2023-11-29 03:45:51,947 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -43 predicate places. [2023-11-29 03:45:51,947 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 136 transitions, 331 flow [2023-11-29 03:45:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:51,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:51,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:51,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 03:45:52,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:52,148 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 821422076, now seen corresponding path program 1 times [2023-11-29 03:45:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546568311] [2023-11-29 03:45:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:52,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:52,150 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:52,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 03:45:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:52,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:45:52,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:52,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:52,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546568311] [2023-11-29 03:45:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546568311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:52,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:45:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909280437] [2023-11-29 03:45:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:45:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:45:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:45:52,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 185 [2023-11-29 03:45:52,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 136 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:52,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:52,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 185 [2023-11-29 03:45:52,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:53,637 INFO L124 PetriNetUnfolderBase]: 2060/4737 cut-off events. [2023-11-29 03:45:53,638 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-29 03:45:53,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 4737 events. 2060/4737 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 34952 event pairs, 891 based on Foata normal form. 0/3922 useless extension candidates. Maximal degree in co-relation 8462. Up to 1703 conditions per place. [2023-11-29 03:45:53,658 INFO L140 encePairwiseOnDemand]: 175/185 looper letters, 83 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2023-11-29 03:45:53,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 152 transitions, 546 flow [2023-11-29 03:45:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:45:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:45:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-11-29 03:45:53,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6227027027027027 [2023-11-29 03:45:53,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-11-29 03:45:53,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-11-29 03:45:53,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:53,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-11-29 03:45:53,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:53,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:53,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:53,664 INFO L175 Difference]: Start difference. First operand has 132 places, 136 transitions, 331 flow. Second operand 5 states and 576 transitions. [2023-11-29 03:45:53,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 152 transitions, 546 flow [2023-11-29 03:45:53,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 152 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:45:53,669 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 335 flow [2023-11-29 03:45:53,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2023-11-29 03:45:53,670 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -44 predicate places. [2023-11-29 03:45:53,670 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 335 flow [2023-11-29 03:45:53,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:53,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:53,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:53,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 03:45:53,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:53,877 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:53,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash -917992404, now seen corresponding path program 1 times [2023-11-29 03:45:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:53,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814614820] [2023-11-29 03:45:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:53,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:53,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:53,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:53,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 03:45:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:54,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:45:54,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:54,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:54,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814614820] [2023-11-29 03:45:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814614820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:45:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419099058] [2023-11-29 03:45:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:54,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:45:54,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:45:54,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:54,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:54,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:45:54,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:54,640 INFO L124 PetriNetUnfolderBase]: 1446/3395 cut-off events. [2023-11-29 03:45:54,640 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-29 03:45:54,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 3395 events. 1446/3395 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 21362 event pairs, 781 based on Foata normal form. 0/2823 useless extension candidates. Maximal degree in co-relation 6062. Up to 1225 conditions per place. [2023-11-29 03:45:54,652 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 85 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2023-11-29 03:45:54,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 147 transitions, 519 flow [2023-11-29 03:45:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-29 03:45:54,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7621621621621621 [2023-11-29 03:45:54,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-29 03:45:54,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-29 03:45:54,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:54,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-29 03:45:54,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:54,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:54,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:54,659 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 335 flow. Second operand 3 states and 423 transitions. [2023-11-29 03:45:54,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 147 transitions, 519 flow [2023-11-29 03:45:54,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 147 transitions, 480 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-29 03:45:54,663 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 273 flow [2023-11-29 03:45:54,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2023-11-29 03:45:54,664 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -53 predicate places. [2023-11-29 03:45:54,665 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 273 flow [2023-11-29 03:45:54,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:54,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:54,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:54,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 03:45:54,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:54,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:54,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1951444364, now seen corresponding path program 1 times [2023-11-29 03:45:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:54,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684317094] [2023-11-29 03:45:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:54,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:54,867 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:54,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 03:45:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:55,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:45:55,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:55,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-11-29 03:45:55,062 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:45:55,135 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 03:45:55,145 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:45:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:55,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:55,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:55,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684317094] [2023-11-29 03:45:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684317094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:55,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:45:55,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600757972] [2023-11-29 03:45:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:55,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:45:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:45:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:45:55,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:45:55,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 106.375) internal successors, (851), 8 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:55,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:55,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:45:55,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:56,734 INFO L124 PetriNetUnfolderBase]: 1653/3798 cut-off events. [2023-11-29 03:45:56,735 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-29 03:45:56,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6721 conditions, 3798 events. 1653/3798 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 24289 event pairs, 404 based on Foata normal form. 0/3176 useless extension candidates. Maximal degree in co-relation 6716. Up to 2373 conditions per place. [2023-11-29 03:45:56,751 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 101 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2023-11-29 03:45:56,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 161 transitions, 572 flow [2023-11-29 03:45:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:45:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:45:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 941 transitions. [2023-11-29 03:45:56,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358108108108108 [2023-11-29 03:45:56,755 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 941 transitions. [2023-11-29 03:45:56,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 941 transitions. [2023-11-29 03:45:56,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:56,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 941 transitions. [2023-11-29 03:45:56,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:56,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:56,762 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:56,762 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 273 flow. Second operand 8 states and 941 transitions. [2023-11-29 03:45:56,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 161 transitions, 572 flow [2023-11-29 03:45:56,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 161 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:45:56,767 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 277 flow [2023-11-29 03:45:56,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2023-11-29 03:45:56,768 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -49 predicate places. [2023-11-29 03:45:56,768 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 277 flow [2023-11-29 03:45:56,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.375) internal successors, (851), 8 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:56,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:56,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:56,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:56,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:56,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:56,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -331901021, now seen corresponding path program 1 times [2023-11-29 03:45:56,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:56,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339455507] [2023-11-29 03:45:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:56,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:56,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:56,971 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:56,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 03:45:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:57,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:45:57,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:57,135 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2023-11-29 03:45:57,136 INFO L378 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 1 case distinctions, treesize of input 19 treesize of output 24 [2023-11-29 03:45:57,156 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 03:45:57,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 03:45:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:57,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:57,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:57,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339455507] [2023-11-29 03:45:57,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339455507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:57,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:57,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:45:57,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678662709] [2023-11-29 03:45:57,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:45:57,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:57,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:45:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:45:58,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 185 [2023-11-29 03:45:58,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:58,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:45:58,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 185 [2023-11-29 03:45:58,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:45:58,707 INFO L124 PetriNetUnfolderBase]: 2274/5018 cut-off events. [2023-11-29 03:45:58,707 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-29 03:45:58,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 5018 events. 2274/5018 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 33589 event pairs, 1834 based on Foata normal form. 73/4356 useless extension candidates. Maximal degree in co-relation 8864. Up to 3539 conditions per place. [2023-11-29 03:45:58,725 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 63 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-29 03:45:58,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 401 flow [2023-11-29 03:45:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:45:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:45:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-29 03:45:58,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2023-11-29 03:45:58,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-29 03:45:58,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-29 03:45:58,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:45:58,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-29 03:45:58,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:58,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:58,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:58,730 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 277 flow. Second operand 3 states and 385 transitions. [2023-11-29 03:45:58,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 401 flow [2023-11-29 03:45:58,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 385 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 03:45:58,733 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 259 flow [2023-11-29 03:45:58,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2023-11-29 03:45:58,733 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -57 predicate places. [2023-11-29 03:45:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 259 flow [2023-11-29 03:45:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:45:58,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:45:58,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:58,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:58,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:58,934 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:45:58,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:58,935 INFO L85 PathProgramCache]: Analyzing trace with hash -331901020, now seen corresponding path program 1 times [2023-11-29 03:45:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:45:58,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181435993] [2023-11-29 03:45:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:58,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:45:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:45:58,936 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:45:58,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 03:45:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:59,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:45:59,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:59,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:59,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-11-29 03:45:59,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:59,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 03:45:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:45:59,154 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 03:45:59,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2023-11-29 03:45:59,166 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 03:45:59,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 03:45:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:45:59,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:59,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:45:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181435993] [2023-11-29 03:45:59,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181435993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:59,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:59,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:45:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78336952] [2023-11-29 03:45:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:59,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:45:59,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:45:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:45:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:00,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:46:00,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:00,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:00,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:46:00,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:00,545 INFO L124 PetriNetUnfolderBase]: 1381/3298 cut-off events. [2023-11-29 03:46:00,545 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-29 03:46:00,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5700 conditions, 3298 events. 1381/3298 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21070 event pairs, 1086 based on Foata normal form. 0/2770 useless extension candidates. Maximal degree in co-relation 5695. Up to 2234 conditions per place. [2023-11-29 03:46:00,559 INFO L140 encePairwiseOnDemand]: 183/185 looper letters, 61 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2023-11-29 03:46:00,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 117 transitions, 381 flow [2023-11-29 03:46:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:46:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-29 03:46:00,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2023-11-29 03:46:00,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-29 03:46:00,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-29 03:46:00,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:00,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-29 03:46:00,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:00,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:00,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:00,564 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 259 flow. Second operand 3 states and 395 transitions. [2023-11-29 03:46:00,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 117 transitions, 381 flow [2023-11-29 03:46:00,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:46:00,566 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 255 flow [2023-11-29 03:46:00,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2023-11-29 03:46:00,567 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -58 predicate places. [2023-11-29 03:46:00,567 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 255 flow [2023-11-29 03:46:00,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:00,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:00,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:00,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 03:46:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:00,768 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:00,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1698996134, now seen corresponding path program 1 times [2023-11-29 03:46:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432570176] [2023-11-29 03:46:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:00,770 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 03:46:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:00,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:46:00,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:00,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:00,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:00,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432570176] [2023-11-29 03:46:00,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432570176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:00,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:00,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:46:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574843532] [2023-11-29 03:46:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:00,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:46:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:46:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:46:01,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-29 03:46:01,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:01,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:01,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-29 03:46:01,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:01,793 INFO L124 PetriNetUnfolderBase]: 1398/3291 cut-off events. [2023-11-29 03:46:01,793 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-29 03:46:01,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5723 conditions, 3291 events. 1398/3291 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20864 event pairs, 1071 based on Foata normal form. 0/2799 useless extension candidates. Maximal degree in co-relation 5718. Up to 2202 conditions per place. [2023-11-29 03:46:01,803 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 68 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2023-11-29 03:46:01,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 414 flow [2023-11-29 03:46:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:46:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:46:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 609 transitions. [2023-11-29 03:46:01,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583783783783784 [2023-11-29 03:46:01,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 609 transitions. [2023-11-29 03:46:01,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 609 transitions. [2023-11-29 03:46:01,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:01,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 609 transitions. [2023-11-29 03:46:01,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:01,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:01,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:01,810 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 255 flow. Second operand 5 states and 609 transitions. [2023-11-29 03:46:01,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 414 flow [2023-11-29 03:46:01,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:46:01,812 INFO L231 Difference]: Finished difference. Result has 118 places, 115 transitions, 260 flow [2023-11-29 03:46:01,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=118, PETRI_TRANSITIONS=115} [2023-11-29 03:46:01,812 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -57 predicate places. [2023-11-29 03:46:01,813 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 115 transitions, 260 flow [2023-11-29 03:46:01,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:01,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:01,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:01,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 03:46:02,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:02,014 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1698996133, now seen corresponding path program 1 times [2023-11-29 03:46:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736808570] [2023-11-29 03:46:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:02,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:02,015 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:02,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 03:46:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:02,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:46:02,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:02,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:02,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:02,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736808570] [2023-11-29 03:46:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736808570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:02,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:02,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:46:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582526222] [2023-11-29 03:46:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:46:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:46:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:46:03,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2023-11-29 03:46:03,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:03,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:03,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2023-11-29 03:46:03,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:03,678 INFO L124 PetriNetUnfolderBase]: 1381/3250 cut-off events. [2023-11-29 03:46:03,678 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-29 03:46:03,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5680 conditions, 3250 events. 1381/3250 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20536 event pairs, 1071 based on Foata normal form. 24/2782 useless extension candidates. Maximal degree in co-relation 5675. Up to 2204 conditions per place. [2023-11-29 03:46:03,706 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 68 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-11-29 03:46:03,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 417 flow [2023-11-29 03:46:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:46:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:46:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 608 transitions. [2023-11-29 03:46:03,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6572972972972972 [2023-11-29 03:46:03,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 608 transitions. [2023-11-29 03:46:03,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 608 transitions. [2023-11-29 03:46:03,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:03,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 608 transitions. [2023-11-29 03:46:03,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:03,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:03,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:03,713 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 260 flow. Second operand 5 states and 608 transitions. [2023-11-29 03:46:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 417 flow [2023-11-29 03:46:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 407 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:46:03,716 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 254 flow [2023-11-29 03:46:03,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2023-11-29 03:46:03,716 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-29 03:46:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 254 flow [2023-11-29 03:46:03,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:03,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:03,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:03,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 03:46:03,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:03,917 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:03,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1129304472, now seen corresponding path program 1 times [2023-11-29 03:46:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:03,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014979122] [2023-11-29 03:46:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:03,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:03,919 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:03,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 03:46:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:04,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:46:04,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:04,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:04,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:04,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014979122] [2023-11-29 03:46:04,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014979122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:04,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:04,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:46:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806324335] [2023-11-29 03:46:04,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:04,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:04,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:04,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:46:04,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:04,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:04,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:46:04,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:04,453 INFO L124 PetriNetUnfolderBase]: 1369/3238 cut-off events. [2023-11-29 03:46:04,453 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-29 03:46:04,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5652 conditions, 3238 events. 1369/3238 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20578 event pairs, 1071 based on Foata normal form. 0/2758 useless extension candidates. Maximal degree in co-relation 5647. Up to 2194 conditions per place. [2023-11-29 03:46:04,464 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 67 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-11-29 03:46:04,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 407 flow [2023-11-29 03:46:04,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:46:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-11-29 03:46:04,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2023-11-29 03:46:04,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-11-29 03:46:04,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-11-29 03:46:04,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:04,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-11-29 03:46:04,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:04,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:04,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:04,468 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 254 flow. Second operand 3 states and 405 transitions. [2023-11-29 03:46:04,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 407 flow [2023-11-29 03:46:04,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 399 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:46:04,471 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 248 flow [2023-11-29 03:46:04,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2023-11-29 03:46:04,471 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -61 predicate places. [2023-11-29 03:46:04,471 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 248 flow [2023-11-29 03:46:04,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:04,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:04,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:04,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 03:46:04,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:04,672 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:04,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2092772418, now seen corresponding path program 1 times [2023-11-29 03:46:04,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:04,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113443907] [2023-11-29 03:46:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:04,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:04,674 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:04,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 03:46:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:04,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 03:46:04,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:04,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:04,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:46:04,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:04,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:05,101 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-29 03:46:05,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 39 [2023-11-29 03:46:05,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:05,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:05,228 INFO L378 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-11-29 03:46:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:05,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:05,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:05,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113443907] [2023-11-29 03:46:05,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113443907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:05,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:05,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 03:46:05,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648913937] [2023-11-29 03:46:05,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:05,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:46:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:05,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:46:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:46:06,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:46:06,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 248 flow. Second operand has 13 states, 13 states have (on average 105.84615384615384) internal successors, (1376), 13 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:06,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:06,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:46:06,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:07,820 INFO L124 PetriNetUnfolderBase]: 1623/3518 cut-off events. [2023-11-29 03:46:07,820 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-29 03:46:07,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 3518 events. 1623/3518 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21640 event pairs, 422 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 6369. Up to 1930 conditions per place. [2023-11-29 03:46:07,833 INFO L140 encePairwiseOnDemand]: 172/185 looper letters, 129 selfloop transitions, 12 changer transitions 0/182 dead transitions. [2023-11-29 03:46:07,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 182 transitions, 680 flow [2023-11-29 03:46:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:46:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 03:46:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1285 transitions. [2023-11-29 03:46:07,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314496314496314 [2023-11-29 03:46:07,836 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1285 transitions. [2023-11-29 03:46:07,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1285 transitions. [2023-11-29 03:46:07,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:07,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1285 transitions. [2023-11-29 03:46:07,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.81818181818181) internal successors, (1285), 11 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:07,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:07,842 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:07,842 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 248 flow. Second operand 11 states and 1285 transitions. [2023-11-29 03:46:07,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 182 transitions, 680 flow [2023-11-29 03:46:07,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 182 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:46:07,845 INFO L231 Difference]: Finished difference. Result has 119 places, 109 transitions, 268 flow [2023-11-29 03:46:07,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=119, PETRI_TRANSITIONS=109} [2023-11-29 03:46:07,846 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -56 predicate places. [2023-11-29 03:46:07,846 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 109 transitions, 268 flow [2023-11-29 03:46:07,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 105.84615384615384) internal successors, (1376), 13 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:07,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:07,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:07,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 03:46:08,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:08,047 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:08,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2131689562, now seen corresponding path program 1 times [2023-11-29 03:46:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184737967] [2023-11-29 03:46:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:08,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:08,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:08,049 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:08,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 03:46:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:08,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 03:46:08,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:08,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:08,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:46:08,406 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2023-11-29 03:46:08,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 29 [2023-11-29 03:46:08,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:46:08,490 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 03:46:08,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:46:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:08,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:08,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184737967] [2023-11-29 03:46:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184737967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:08,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:08,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:46:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138205045] [2023-11-29 03:46:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:08,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:46:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:46:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:46:10,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 185 [2023-11-29 03:46:10,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 268 flow. Second operand has 11 states, 11 states have (on average 95.63636363636364) internal successors, (1052), 11 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:10,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:10,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 185 [2023-11-29 03:46:10,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:11,220 INFO L124 PetriNetUnfolderBase]: 2426/5091 cut-off events. [2023-11-29 03:46:11,220 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-29 03:46:11,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9548 conditions, 5091 events. 2426/5091 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 34303 event pairs, 320 based on Foata normal form. 66/4647 useless extension candidates. Maximal degree in co-relation 9542. Up to 2053 conditions per place. [2023-11-29 03:46:11,238 INFO L140 encePairwiseOnDemand]: 170/185 looper letters, 153 selfloop transitions, 18 changer transitions 0/212 dead transitions. [2023-11-29 03:46:11,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 212 transitions, 841 flow [2023-11-29 03:46:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:46:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 03:46:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1193 transitions. [2023-11-29 03:46:11,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862407862407862 [2023-11-29 03:46:11,242 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1193 transitions. [2023-11-29 03:46:11,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1193 transitions. [2023-11-29 03:46:11,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:11,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1193 transitions. [2023-11-29 03:46:11,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.45454545454545) internal successors, (1193), 11 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:11,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:11,248 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:11,248 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 268 flow. Second operand 11 states and 1193 transitions. [2023-11-29 03:46:11,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 212 transitions, 841 flow [2023-11-29 03:46:11,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 212 transitions, 821 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 03:46:11,252 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 341 flow [2023-11-29 03:46:11,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=341, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2023-11-29 03:46:11,253 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-29 03:46:11,253 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 341 flow [2023-11-29 03:46:11,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 95.63636363636364) internal successors, (1052), 11 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:11,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:11,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:11,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-29 03:46:11,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:11,454 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:11,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 488031645, now seen corresponding path program 1 times [2023-11-29 03:46:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502595060] [2023-11-29 03:46:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:11,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:11,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:11,456 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:11,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 03:46:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:11,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 03:46:11,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:11,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-11-29 03:46:11,700 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:46:11,794 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:46:11,808 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-11-29 03:46:11,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 35 [2023-11-29 03:46:11,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:46:11,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:46:11,921 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 03:46:12,022 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:46:12,030 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:46:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:12,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:12,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502595060] [2023-11-29 03:46:12,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502595060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:12,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 03:46:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123492068] [2023-11-29 03:46:12,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:12,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:46:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:46:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:46:13,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:46:13,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 341 flow. Second operand has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:13,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:13,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:46:13,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:15,226 INFO L124 PetriNetUnfolderBase]: 1827/3774 cut-off events. [2023-11-29 03:46:15,226 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-29 03:46:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 3774 events. 1827/3774 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22762 event pairs, 481 based on Foata normal form. 0/3397 useless extension candidates. Maximal degree in co-relation 7576. Up to 1982 conditions per place. [2023-11-29 03:46:15,242 INFO L140 encePairwiseOnDemand]: 166/185 looper letters, 152 selfloop transitions, 18 changer transitions 0/210 dead transitions. [2023-11-29 03:46:15,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 210 transitions, 859 flow [2023-11-29 03:46:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:46:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:46:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1406 transitions. [2023-11-29 03:46:15,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-29 03:46:15,246 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1406 transitions. [2023-11-29 03:46:15,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1406 transitions. [2023-11-29 03:46:15,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:15,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1406 transitions. [2023-11-29 03:46:15,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:15,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:15,252 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:15,252 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 341 flow. Second operand 12 states and 1406 transitions. [2023-11-29 03:46:15,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 210 transitions, 859 flow [2023-11-29 03:46:15,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 210 transitions, 831 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-29 03:46:15,257 INFO L231 Difference]: Finished difference. Result has 128 places, 117 transitions, 348 flow [2023-11-29 03:46:15,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=128, PETRI_TRANSITIONS=117} [2023-11-29 03:46:15,257 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -47 predicate places. [2023-11-29 03:46:15,257 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 117 transitions, 348 flow [2023-11-29 03:46:15,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:15,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:15,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:15,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-29 03:46:15,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:15,458 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:15,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2049812073, now seen corresponding path program 1 times [2023-11-29 03:46:15,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:15,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366473629] [2023-11-29 03:46:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:15,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:15,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:15,460 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:15,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 03:46:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:15,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:46:15,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:15,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:46:15,749 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 03:46:15,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 20 [2023-11-29 03:46:15,755 INFO L378 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 [2023-11-29 03:46:15,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:46:15,766 INFO L378 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 [2023-11-29 03:46:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:16,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:16,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366473629] [2023-11-29 03:46:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366473629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:16,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:16,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:46:16,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201277929] [2023-11-29 03:46:16,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:16,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:46:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:46:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:46:16,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:46:16,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 117 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:16,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:16,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:46:16,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:16,994 INFO L124 PetriNetUnfolderBase]: 1928/3862 cut-off events. [2023-11-29 03:46:16,995 INFO L125 PetriNetUnfolderBase]: For 645/647 co-relation queries the response was YES. [2023-11-29 03:46:17,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 3862 events. 1928/3862 cut-off events. For 645/647 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23155 event pairs, 1038 based on Foata normal form. 26/3676 useless extension candidates. Maximal degree in co-relation 8373. Up to 2633 conditions per place. [2023-11-29 03:46:17,010 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 97 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2023-11-29 03:46:17,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 650 flow [2023-11-29 03:46:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:46:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:46:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 534 transitions. [2023-11-29 03:46:17,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216216216216216 [2023-11-29 03:46:17,012 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 534 transitions. [2023-11-29 03:46:17,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 534 transitions. [2023-11-29 03:46:17,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:17,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 534 transitions. [2023-11-29 03:46:17,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,014 INFO L175 Difference]: Start difference. First operand has 128 places, 117 transitions, 348 flow. Second operand 4 states and 534 transitions. [2023-11-29 03:46:17,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 650 flow [2023-11-29 03:46:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 149 transitions, 625 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 03:46:17,019 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 342 flow [2023-11-29 03:46:17,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2023-11-29 03:46:17,020 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-29 03:46:17,020 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 342 flow [2023-11-29 03:46:17,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:17,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:17,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 03:46:17,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:17,221 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:17,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1359864830, now seen corresponding path program 1 times [2023-11-29 03:46:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089562789] [2023-11-29 03:46:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:17,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:17,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:17,223 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:17,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 03:46:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:17,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:46:17,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:17,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:17,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089562789] [2023-11-29 03:46:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089562789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:46:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484539592] [2023-11-29 03:46:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:17,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:46:17,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:17,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:46:17,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:17,934 INFO L124 PetriNetUnfolderBase]: 1876/4150 cut-off events. [2023-11-29 03:46:17,934 INFO L125 PetriNetUnfolderBase]: For 529/547 co-relation queries the response was YES. [2023-11-29 03:46:17,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8554 conditions, 4150 events. 1876/4150 cut-off events. For 529/547 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 27488 event pairs, 953 based on Foata normal form. 34/3704 useless extension candidates. Maximal degree in co-relation 8542. Up to 1886 conditions per place. [2023-11-29 03:46:17,949 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 93 selfloop transitions, 3 changer transitions 0/145 dead transitions. [2023-11-29 03:46:17,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 145 transitions, 614 flow [2023-11-29 03:46:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:46:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-11-29 03:46:17,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7549549549549549 [2023-11-29 03:46:17,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-11-29 03:46:17,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-11-29 03:46:17,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:17,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-11-29 03:46:17,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,952 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 342 flow. Second operand 3 states and 419 transitions. [2023-11-29 03:46:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 145 transitions, 614 flow [2023-11-29 03:46:17,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 145 transitions, 609 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:46:17,955 INFO L231 Difference]: Finished difference. Result has 125 places, 119 transitions, 355 flow [2023-11-29 03:46:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=125, PETRI_TRANSITIONS=119} [2023-11-29 03:46:17,956 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -50 predicate places. [2023-11-29 03:46:17,956 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 119 transitions, 355 flow [2023-11-29 03:46:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:17,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:17,956 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:17,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-29 03:46:18,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:18,157 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:18,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1785705765, now seen corresponding path program 1 times [2023-11-29 03:46:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668021184] [2023-11-29 03:46:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:18,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:18,159 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:18,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 03:46:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:18,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:46:18,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:18,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:18,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:18,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668021184] [2023-11-29 03:46:18,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668021184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:18,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:18,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:46:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490287254] [2023-11-29 03:46:18,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:18,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:18,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:46:18,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:18,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:18,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:46:18,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:18,706 INFO L124 PetriNetUnfolderBase]: 1164/2622 cut-off events. [2023-11-29 03:46:18,706 INFO L125 PetriNetUnfolderBase]: For 418/420 co-relation queries the response was YES. [2023-11-29 03:46:18,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5391 conditions, 2622 events. 1164/2622 cut-off events. For 418/420 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14950 event pairs, 721 based on Foata normal form. 42/2424 useless extension candidates. Maximal degree in co-relation 5378. Up to 1143 conditions per place. [2023-11-29 03:46:18,716 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 80 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-29 03:46:18,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 540 flow [2023-11-29 03:46:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:46:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-11-29 03:46:18,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.736936936936937 [2023-11-29 03:46:18,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-11-29 03:46:18,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-11-29 03:46:18,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:18,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-11-29 03:46:18,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:18,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:18,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:18,719 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 355 flow. Second operand 3 states and 409 transitions. [2023-11-29 03:46:18,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 540 flow [2023-11-29 03:46:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 528 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 03:46:18,724 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 331 flow [2023-11-29 03:46:18,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2023-11-29 03:46:18,725 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -49 predicate places. [2023-11-29 03:46:18,725 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 331 flow [2023-11-29 03:46:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:18,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:18,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:18,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 03:46:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:18,926 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1310521359, now seen corresponding path program 1 times [2023-11-29 03:46:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008241144] [2023-11-29 03:46:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:18,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:18,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:18,927 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:18,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 03:46:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:19,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:46:19,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:19,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 9 [2023-11-29 03:46:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:19,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:19,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008241144] [2023-11-29 03:46:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008241144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:19,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:46:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619909433] [2023-11-29 03:46:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:19,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:19,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:19,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:46:19,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:19,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:19,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:46:19,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:19,397 INFO L124 PetriNetUnfolderBase]: 746/1822 cut-off events. [2023-11-29 03:46:19,397 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2023-11-29 03:46:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 1822 events. 746/1822 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9093 event pairs, 141 based on Foata normal form. 102/1788 useless extension candidates. Maximal degree in co-relation 3750. Up to 988 conditions per place. [2023-11-29 03:46:19,404 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 71 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2023-11-29 03:46:19,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 127 transitions, 519 flow [2023-11-29 03:46:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:46:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-11-29 03:46:19,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.736936936936937 [2023-11-29 03:46:19,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-11-29 03:46:19,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-11-29 03:46:19,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:19,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-11-29 03:46:19,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:19,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:19,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:19,407 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 331 flow. Second operand 3 states and 409 transitions. [2023-11-29 03:46:19,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 127 transitions, 519 flow [2023-11-29 03:46:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 127 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:46:19,410 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 339 flow [2023-11-29 03:46:19,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2023-11-29 03:46:19,411 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -49 predicate places. [2023-11-29 03:46:19,411 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 339 flow [2023-11-29 03:46:19,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:19,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:19,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:19,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 03:46:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:19,612 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:19,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1907657161, now seen corresponding path program 1 times [2023-11-29 03:46:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:19,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2266230] [2023-11-29 03:46:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:19,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:19,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:19,613 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:19,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 03:46:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:19,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:46:19,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:20,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:20,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:20,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2266230] [2023-11-29 03:46:20,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2266230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:20,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:20,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:46:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188163555] [2023-11-29 03:46:20,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:20,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:46:20,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:20,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:46:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:46:20,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:46:20,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:20,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:20,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:46:20,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:21,367 INFO L124 PetriNetUnfolderBase]: 741/1752 cut-off events. [2023-11-29 03:46:21,367 INFO L125 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2023-11-29 03:46:21,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 1752 events. 741/1752 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8496 event pairs, 529 based on Foata normal form. 27/1683 useless extension candidates. Maximal degree in co-relation 3782. Up to 1167 conditions per place. [2023-11-29 03:46:21,373 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 68 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-11-29 03:46:21,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 115 transitions, 490 flow [2023-11-29 03:46:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:46:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:46:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-11-29 03:46:21,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6378378378378379 [2023-11-29 03:46:21,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-11-29 03:46:21,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-11-29 03:46:21,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:21,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-11-29 03:46:21,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:21,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:21,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:21,378 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 339 flow. Second operand 5 states and 590 transitions. [2023-11-29 03:46:21,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 115 transitions, 490 flow [2023-11-29 03:46:21,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 115 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:46:21,381 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 331 flow [2023-11-29 03:46:21,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2023-11-29 03:46:21,382 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -51 predicate places. [2023-11-29 03:46:21,382 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 331 flow [2023-11-29 03:46:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:21,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:21,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:21,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 03:46:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:21,583 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:21,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -310661006, now seen corresponding path program 1 times [2023-11-29 03:46:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:21,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259613244] [2023-11-29 03:46:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:21,584 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:21,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 03:46:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:21,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:46:21,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:21,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:21,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:21,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259613244] [2023-11-29 03:46:21,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259613244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:21,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:21,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:46:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815461299] [2023-11-29 03:46:21,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:21,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:46:21,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:21,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:46:21,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:46:22,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 185 [2023-11-29 03:46:22,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:22,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:22,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 185 [2023-11-29 03:46:22,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:22,562 INFO L124 PetriNetUnfolderBase]: 774/1713 cut-off events. [2023-11-29 03:46:22,563 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 03:46:22,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 1713 events. 774/1713 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7730 event pairs, 529 based on Foata normal form. 0/1671 useless extension candidates. Maximal degree in co-relation 3764. Up to 1164 conditions per place. [2023-11-29 03:46:22,569 INFO L140 encePairwiseOnDemand]: 172/185 looper letters, 70 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2023-11-29 03:46:22,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 482 flow [2023-11-29 03:46:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:46:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:46:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2023-11-29 03:46:22,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6172972972972973 [2023-11-29 03:46:22,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2023-11-29 03:46:22,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2023-11-29 03:46:22,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:22,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2023-11-29 03:46:22,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:22,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:22,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:22,573 INFO L175 Difference]: Start difference. First operand has 124 places, 110 transitions, 331 flow. Second operand 5 states and 571 transitions. [2023-11-29 03:46:22,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 482 flow [2023-11-29 03:46:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 107 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:46:22,577 INFO L231 Difference]: Finished difference. Result has 116 places, 102 transitions, 317 flow [2023-11-29 03:46:22,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=116, PETRI_TRANSITIONS=102} [2023-11-29 03:46:22,577 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -59 predicate places. [2023-11-29 03:46:22,577 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 102 transitions, 317 flow [2023-11-29 03:46:22,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:22,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:22,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:22,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-11-29 03:46:22,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:22,779 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:22,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:22,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1040555698, now seen corresponding path program 1 times [2023-11-29 03:46:22,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:22,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870877371] [2023-11-29 03:46:22,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:22,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:22,780 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:22,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 03:46:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:23,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 03:46:23,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:23,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:23,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:46:23,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:23,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:23,337 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-29 03:46:23,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 39 [2023-11-29 03:46:23,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:23,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:23,457 INFO L378 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-11-29 03:46:23,628 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-29 03:46:23,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 39 [2023-11-29 03:46:23,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:23,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:23,709 INFO L378 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-29 03:46:23,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 03:46:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:23,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:23,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870877371] [2023-11-29 03:46:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870877371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 03:46:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786714706] [2023-11-29 03:46:23,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:46:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:46:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:46:26,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 185 [2023-11-29 03:46:26,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 102 transitions, 317 flow. Second operand has 15 states, 15 states have (on average 100.93333333333334) internal successors, (1514), 15 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:26,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:26,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 185 [2023-11-29 03:46:26,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:28,111 INFO L124 PetriNetUnfolderBase]: 989/2129 cut-off events. [2023-11-29 03:46:28,111 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-11-29 03:46:28,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 2129 events. 989/2129 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 9333 event pairs, 210 based on Foata normal form. 0/2073 useless extension candidates. Maximal degree in co-relation 4675. Up to 671 conditions per place. [2023-11-29 03:46:28,119 INFO L140 encePairwiseOnDemand]: 167/185 looper letters, 142 selfloop transitions, 17 changer transitions 0/187 dead transitions. [2023-11-29 03:46:28,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 187 transitions, 855 flow [2023-11-29 03:46:28,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:46:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 03:46:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1429 transitions. [2023-11-29 03:46:28,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941787941787942 [2023-11-29 03:46:28,121 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1429 transitions. [2023-11-29 03:46:28,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1429 transitions. [2023-11-29 03:46:28,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:28,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1429 transitions. [2023-11-29 03:46:28,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 109.92307692307692) internal successors, (1429), 13 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:28,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:28,125 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:28,125 INFO L175 Difference]: Start difference. First operand has 116 places, 102 transitions, 317 flow. Second operand 13 states and 1429 transitions. [2023-11-29 03:46:28,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 187 transitions, 855 flow [2023-11-29 03:46:28,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 187 transitions, 841 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:46:28,130 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 374 flow [2023-11-29 03:46:28,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=374, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2023-11-29 03:46:28,130 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -48 predicate places. [2023-11-29 03:46:28,130 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 374 flow [2023-11-29 03:46:28,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.93333333333334) internal successors, (1514), 15 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:28,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:28,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:28,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-29 03:46:28,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:28,332 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:28,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1950143277, now seen corresponding path program 1 times [2023-11-29 03:46:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:28,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742188998] [2023-11-29 03:46:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:28,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:28,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:28,334 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:28,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 03:46:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:28,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:46:28,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:28,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:28,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:28,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742188998] [2023-11-29 03:46:28,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742188998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:28,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:28,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:46:28,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735397487] [2023-11-29 03:46:28,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:28,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:46:28,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:46:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:46:29,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 185 [2023-11-29 03:46:29,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:29,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:29,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 185 [2023-11-29 03:46:29,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:29,972 INFO L124 PetriNetUnfolderBase]: 903/2039 cut-off events. [2023-11-29 03:46:29,972 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-11-29 03:46:29,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 2039 events. 903/2039 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9246 event pairs, 613 based on Foata normal form. 0/1988 useless extension candidates. Maximal degree in co-relation 4595. Up to 1329 conditions per place. [2023-11-29 03:46:29,980 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 69 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2023-11-29 03:46:29,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 110 transitions, 535 flow [2023-11-29 03:46:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:46:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:46:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-11-29 03:46:29,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6227027027027027 [2023-11-29 03:46:29,982 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-11-29 03:46:29,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-11-29 03:46:29,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:29,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-11-29 03:46:29,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:29,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:29,984 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:29,984 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 374 flow. Second operand 5 states and 576 transitions. [2023-11-29 03:46:29,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 110 transitions, 535 flow [2023-11-29 03:46:29,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 510 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 03:46:29,987 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 355 flow [2023-11-29 03:46:29,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2023-11-29 03:46:29,988 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -55 predicate places. [2023-11-29 03:46:29,988 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 355 flow [2023-11-29 03:46:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:29,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:29,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:29,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 03:46:30,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:30,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:30,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1153422644, now seen corresponding path program 1 times [2023-11-29 03:46:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:30,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158008435] [2023-11-29 03:46:30,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:30,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:30,191 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:30,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 03:46:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:30,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:46:30,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:46:30,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:30,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158008435] [2023-11-29 03:46:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158008435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:30,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:46:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973188596] [2023-11-29 03:46:30,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:30,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:46:30,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:46:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:46:30,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2023-11-29 03:46:30,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:30,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:30,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2023-11-29 03:46:30,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:30,905 INFO L124 PetriNetUnfolderBase]: 1278/2942 cut-off events. [2023-11-29 03:46:30,905 INFO L125 PetriNetUnfolderBase]: For 880/885 co-relation queries the response was YES. [2023-11-29 03:46:30,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 2942 events. 1278/2942 cut-off events. For 880/885 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 15507 event pairs, 642 based on Foata normal form. 68/2921 useless extension candidates. Maximal degree in co-relation 6473. Up to 1642 conditions per place. [2023-11-29 03:46:30,916 INFO L140 encePairwiseOnDemand]: 182/185 looper letters, 119 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-29 03:46:30,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 788 flow [2023-11-29 03:46:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:46:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:46:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-29 03:46:30,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7981981981981981 [2023-11-29 03:46:30,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-29 03:46:30,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-29 03:46:30,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:30,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-29 03:46:30,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:30,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:30,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:30,919 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 355 flow. Second operand 3 states and 443 transitions. [2023-11-29 03:46:30,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 788 flow [2023-11-29 03:46:30,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 158 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:46:30,924 INFO L231 Difference]: Finished difference. Result has 119 places, 106 transitions, 357 flow [2023-11-29 03:46:30,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=357, PETRI_PLACES=119, PETRI_TRANSITIONS=106} [2023-11-29 03:46:30,924 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -56 predicate places. [2023-11-29 03:46:30,924 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 106 transitions, 357 flow [2023-11-29 03:46:30,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:30,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:30,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:30,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 03:46:31,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:31,125 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:31,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:31,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2107774119, now seen corresponding path program 1 times [2023-11-29 03:46:31,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:31,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449695723] [2023-11-29 03:46:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:31,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:31,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:31,127 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:31,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 03:46:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:31,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:46:31,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:31,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:31,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449695723] [2023-11-29 03:46:31,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449695723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:31,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:46:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751171954] [2023-11-29 03:46:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:46:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:46:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:46:32,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2023-11-29 03:46:32,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 106 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:32,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:32,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2023-11-29 03:46:32,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:32,736 INFO L124 PetriNetUnfolderBase]: 1291/2920 cut-off events. [2023-11-29 03:46:32,736 INFO L125 PetriNetUnfolderBase]: For 1277/1281 co-relation queries the response was YES. [2023-11-29 03:46:32,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7012 conditions, 2920 events. 1291/2920 cut-off events. For 1277/1281 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 15013 event pairs, 485 based on Foata normal form. 10/2867 useless extension candidates. Maximal degree in co-relation 6993. Up to 1319 conditions per place. [2023-11-29 03:46:32,750 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 164 selfloop transitions, 9 changer transitions 0/209 dead transitions. [2023-11-29 03:46:32,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 209 transitions, 1053 flow [2023-11-29 03:46:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:46:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:46:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 830 transitions. [2023-11-29 03:46:32,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2023-11-29 03:46:32,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 830 transitions. [2023-11-29 03:46:32,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 830 transitions. [2023-11-29 03:46:32,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:32,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 830 transitions. [2023-11-29 03:46:32,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:32,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:32,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:32,755 INFO L175 Difference]: Start difference. First operand has 119 places, 106 transitions, 357 flow. Second operand 6 states and 830 transitions. [2023-11-29 03:46:32,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 209 transitions, 1053 flow [2023-11-29 03:46:32,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 209 transitions, 1049 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:46:32,760 INFO L231 Difference]: Finished difference. Result has 125 places, 110 transitions, 401 flow [2023-11-29 03:46:32,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=401, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2023-11-29 03:46:32,761 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -50 predicate places. [2023-11-29 03:46:32,761 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 401 flow [2023-11-29 03:46:32,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:32,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:32,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:32,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 03:46:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:32,962 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:32,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1147800897, now seen corresponding path program 1 times [2023-11-29 03:46:32,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141712569] [2023-11-29 03:46:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:32,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:32,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:32,964 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:32,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 03:46:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:33,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 03:46:33,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:33,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:33,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:46:33,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:33,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:33,550 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-29 03:46:33,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 39 [2023-11-29 03:46:33,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:33,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:33,681 INFO L378 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2023-11-29 03:46:33,901 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-29 03:46:33,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 39 [2023-11-29 03:46:33,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:33,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:33,979 INFO L378 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-29 03:46:34,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 03:46:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:34,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:34,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141712569] [2023-11-29 03:46:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141712569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:34,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 03:46:34,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513377059] [2023-11-29 03:46:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:34,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:46:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:46:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:46:35,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 185 [2023-11-29 03:46:35,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 401 flow. Second operand has 15 states, 15 states have (on average 107.33333333333333) internal successors, (1610), 15 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:35,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:35,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 185 [2023-11-29 03:46:35,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:37,007 INFO L124 PetriNetUnfolderBase]: 1353/2908 cut-off events. [2023-11-29 03:46:37,007 INFO L125 PetriNetUnfolderBase]: For 1973/1974 co-relation queries the response was YES. [2023-11-29 03:46:37,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7535 conditions, 2908 events. 1353/2908 cut-off events. For 1973/1974 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 14157 event pairs, 226 based on Foata normal form. 0/2862 useless extension candidates. Maximal degree in co-relation 7514. Up to 865 conditions per place. [2023-11-29 03:46:37,019 INFO L140 encePairwiseOnDemand]: 168/185 looper letters, 161 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2023-11-29 03:46:37,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 205 transitions, 1143 flow [2023-11-29 03:46:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:46:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 03:46:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1504 transitions. [2023-11-29 03:46:37,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253638253638254 [2023-11-29 03:46:37,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1504 transitions. [2023-11-29 03:46:37,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1504 transitions. [2023-11-29 03:46:37,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:37,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1504 transitions. [2023-11-29 03:46:37,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.6923076923077) internal successors, (1504), 13 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:37,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:37,026 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:37,026 INFO L175 Difference]: Start difference. First operand has 125 places, 110 transitions, 401 flow. Second operand 13 states and 1504 transitions. [2023-11-29 03:46:37,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 205 transitions, 1143 flow [2023-11-29 03:46:37,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 205 transitions, 1106 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 03:46:37,032 INFO L231 Difference]: Finished difference. Result has 136 places, 111 transitions, 434 flow [2023-11-29 03:46:37,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=434, PETRI_PLACES=136, PETRI_TRANSITIONS=111} [2023-11-29 03:46:37,032 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -39 predicate places. [2023-11-29 03:46:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 111 transitions, 434 flow [2023-11-29 03:46:37,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.33333333333333) internal successors, (1610), 15 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:37,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:37,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:37,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 03:46:37,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:37,233 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:37,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:37,234 INFO L85 PathProgramCache]: Analyzing trace with hash 966119416, now seen corresponding path program 1 times [2023-11-29 03:46:37,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:37,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261239892] [2023-11-29 03:46:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:37,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:37,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:37,235 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:37,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 03:46:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:37,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:46:37,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:37,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:37,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:46:37,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:37,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:38,012 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:46:38,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:46:38,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:46:38,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:38,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:46:38,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:46:38,748 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:46:38,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:46:38,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:46:38,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:38,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:46:39,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:46:39,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:39,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:46:39,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:46:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:39,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:39,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:39,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261239892] [2023-11-29 03:46:39,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261239892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:39,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:39,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:46:39,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096899080] [2023-11-29 03:46:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:39,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:46:39,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:46:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:46:44,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:46:44,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 111 transitions, 434 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:44,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:44,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:46:44,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:47,657 INFO L124 PetriNetUnfolderBase]: 1644/3564 cut-off events. [2023-11-29 03:46:47,657 INFO L125 PetriNetUnfolderBase]: For 2368/2369 co-relation queries the response was YES. [2023-11-29 03:46:47,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9552 conditions, 3564 events. 1644/3564 cut-off events. For 2368/2369 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 18912 event pairs, 391 based on Foata normal form. 0/3512 useless extension candidates. Maximal degree in co-relation 9529. Up to 2307 conditions per place. [2023-11-29 03:46:47,672 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 175 selfloop transitions, 45 changer transitions 0/247 dead transitions. [2023-11-29 03:46:47,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 247 transitions, 1420 flow [2023-11-29 03:46:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:46:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 03:46:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2776 transitions. [2023-11-29 03:46:47,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6002162162162162 [2023-11-29 03:46:47,676 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2776 transitions. [2023-11-29 03:46:47,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2776 transitions. [2023-11-29 03:46:47,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:47,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2776 transitions. [2023-11-29 03:46:47,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.04) internal successors, (2776), 25 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:47,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:47,684 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:47,684 INFO L175 Difference]: Start difference. First operand has 136 places, 111 transitions, 434 flow. Second operand 25 states and 2776 transitions. [2023-11-29 03:46:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 247 transitions, 1420 flow [2023-11-29 03:46:47,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 247 transitions, 1362 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 03:46:47,692 INFO L231 Difference]: Finished difference. Result has 166 places, 153 transitions, 837 flow [2023-11-29 03:46:47,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=837, PETRI_PLACES=166, PETRI_TRANSITIONS=153} [2023-11-29 03:46:47,693 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -9 predicate places. [2023-11-29 03:46:47,693 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 153 transitions, 837 flow [2023-11-29 03:46:47,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:47,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:47,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:47,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 03:46:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:47,894 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:47,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:47,894 INFO L85 PathProgramCache]: Analyzing trace with hash -894741990, now seen corresponding path program 2 times [2023-11-29 03:46:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085545324] [2023-11-29 03:46:47,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:46:47,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:47,896 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:47,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 03:46:48,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:46:48,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:48,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:46:48,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:48,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:48,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:46:48,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:48,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:48,703 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:46:48,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:46:48,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:46:48,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:48,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:46:49,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:46:49,515 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:46:49,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:46:49,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:46:49,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:49,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:46:49,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:46:50,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:50,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:46:50,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:46:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:46:50,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:50,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:46:50,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085545324] [2023-11-29 03:46:50,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085545324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:50,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:50,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:46:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773128397] [2023-11-29 03:46:50,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:50,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:46:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:46:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:46:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:46:55,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:46:55,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 153 transitions, 837 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:55,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:46:55,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:46:55,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:46:58,635 INFO L124 PetriNetUnfolderBase]: 1892/4104 cut-off events. [2023-11-29 03:46:58,635 INFO L125 PetriNetUnfolderBase]: For 4945/4945 co-relation queries the response was YES. [2023-11-29 03:46:58,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12170 conditions, 4104 events. 1892/4104 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 22916 event pairs, 446 based on Foata normal form. 0/4052 useless extension candidates. Maximal degree in co-relation 12131. Up to 2642 conditions per place. [2023-11-29 03:46:58,656 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 210 selfloop transitions, 43 changer transitions 0/280 dead transitions. [2023-11-29 03:46:58,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 280 transitions, 1948 flow [2023-11-29 03:46:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:46:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 03:46:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2767 transitions. [2023-11-29 03:46:58,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5982702702702702 [2023-11-29 03:46:58,659 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2767 transitions. [2023-11-29 03:46:58,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2767 transitions. [2023-11-29 03:46:58,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:46:58,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2767 transitions. [2023-11-29 03:46:58,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 110.68) internal successors, (2767), 25 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:58,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:58,666 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:58,666 INFO L175 Difference]: Start difference. First operand has 166 places, 153 transitions, 837 flow. Second operand 25 states and 2767 transitions. [2023-11-29 03:46:58,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 280 transitions, 1948 flow [2023-11-29 03:46:58,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 280 transitions, 1946 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:46:58,686 INFO L231 Difference]: Finished difference. Result has 203 places, 184 transitions, 1279 flow [2023-11-29 03:46:58,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1279, PETRI_PLACES=203, PETRI_TRANSITIONS=184} [2023-11-29 03:46:58,687 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 28 predicate places. [2023-11-29 03:46:58,687 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 184 transitions, 1279 flow [2023-11-29 03:46:58,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:46:58,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:46:58,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:58,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-29 03:46:58,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:58,888 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:46:58,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash 269530064, now seen corresponding path program 3 times [2023-11-29 03:46:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:46:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793972701] [2023-11-29 03:46:58,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:46:58,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:46:58,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:46:58,890 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:46:58,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-29 03:46:59,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 03:46:59,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:59,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:46:59,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:59,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:46:59,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:46:59,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:59,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:46:59,583 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:46:59,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:46:59,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:46:59,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:46:59,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:46:59,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:47:00,352 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:47:00,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:47:00,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:47:00,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:00,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:47:00,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:47:00,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:00,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:47:00,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:47:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:47:00,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:00,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:47:00,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793972701] [2023-11-29 03:47:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793972701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:00,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:00,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:47:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271005719] [2023-11-29 03:47:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:47:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:47:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:47:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:07,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:47:07,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 184 transitions, 1279 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:07,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:47:07,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:47:07,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:47:11,161 INFO L124 PetriNetUnfolderBase]: 2140/4647 cut-off events. [2023-11-29 03:47:11,161 INFO L125 PetriNetUnfolderBase]: For 10242/10242 co-relation queries the response was YES. [2023-11-29 03:47:11,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15134 conditions, 4647 events. 2140/4647 cut-off events. For 10242/10242 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 27104 event pairs, 485 based on Foata normal form. 0/4593 useless extension candidates. Maximal degree in co-relation 15080. Up to 3088 conditions per place. [2023-11-29 03:47:11,192 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 242 selfloop transitions, 45 changer transitions 0/314 dead transitions. [2023-11-29 03:47:11,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 314 transitions, 2573 flow [2023-11-29 03:47:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:47:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 03:47:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2772 transitions. [2023-11-29 03:47:11,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993513513513513 [2023-11-29 03:47:11,196 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2772 transitions. [2023-11-29 03:47:11,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2772 transitions. [2023-11-29 03:47:11,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:47:11,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2772 transitions. [2023-11-29 03:47:11,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 110.88) internal successors, (2772), 25 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:11,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:11,203 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:11,203 INFO L175 Difference]: Start difference. First operand has 203 places, 184 transitions, 1279 flow. Second operand 25 states and 2772 transitions. [2023-11-29 03:47:11,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 314 transitions, 2573 flow [2023-11-29 03:47:11,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 314 transitions, 2480 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-11-29 03:47:11,233 INFO L231 Difference]: Finished difference. Result has 238 places, 215 transitions, 1722 flow [2023-11-29 03:47:11,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1722, PETRI_PLACES=238, PETRI_TRANSITIONS=215} [2023-11-29 03:47:11,233 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 63 predicate places. [2023-11-29 03:47:11,233 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 215 transitions, 1722 flow [2023-11-29 03:47:11,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:11,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:47:11,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:11,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:11,434 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:47:11,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1155133010, now seen corresponding path program 4 times [2023-11-29 03:47:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:47:11,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849951589] [2023-11-29 03:47:11,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:47:11,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:11,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:47:11,436 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:47:11,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 03:47:11,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:47:11,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:11,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:47:11,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:11,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:47:11,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:47:11,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:11,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:47:12,152 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:47:12,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:47:12,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:47:12,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:12,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:47:12,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:47:13,017 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:47:13,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:47:13,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:47:13,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:13,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:47:13,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:47:13,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:13,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:47:13,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:47:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:47:13,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:13,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:47:13,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849951589] [2023-11-29 03:47:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849951589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:13,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:13,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:47:13,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691944060] [2023-11-29 03:47:13,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:13,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:47:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:47:13,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:47:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:19,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:47:19,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 215 transitions, 1722 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:19,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:47:19,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:47:19,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:47:22,447 INFO L124 PetriNetUnfolderBase]: 2377/5169 cut-off events. [2023-11-29 03:47:22,447 INFO L125 PetriNetUnfolderBase]: For 18185/18185 co-relation queries the response was YES. [2023-11-29 03:47:22,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18095 conditions, 5169 events. 2377/5169 cut-off events. For 18185/18185 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 31293 event pairs, 519 based on Foata normal form. 0/5109 useless extension candidates. Maximal degree in co-relation 18026. Up to 3525 conditions per place. [2023-11-29 03:47:22,495 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 268 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2023-11-29 03:47:22,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 343 transitions, 3161 flow [2023-11-29 03:47:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:47:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 03:47:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2772 transitions. [2023-11-29 03:47:22,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993513513513513 [2023-11-29 03:47:22,498 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2772 transitions. [2023-11-29 03:47:22,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2772 transitions. [2023-11-29 03:47:22,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:47:22,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2772 transitions. [2023-11-29 03:47:22,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 110.88) internal successors, (2772), 25 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:22,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:22,560 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:22,560 INFO L175 Difference]: Start difference. First operand has 238 places, 215 transitions, 1722 flow. Second operand 25 states and 2772 transitions. [2023-11-29 03:47:22,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 343 transitions, 3161 flow [2023-11-29 03:47:22,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 343 transitions, 2982 flow, removed 82 selfloop flow, removed 4 redundant places. [2023-11-29 03:47:22,628 INFO L231 Difference]: Finished difference. Result has 271 places, 243 transitions, 2139 flow [2023-11-29 03:47:22,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2139, PETRI_PLACES=271, PETRI_TRANSITIONS=243} [2023-11-29 03:47:22,628 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 96 predicate places. [2023-11-29 03:47:22,628 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 243 transitions, 2139 flow [2023-11-29 03:47:22,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:22,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:47:22,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:22,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-11-29 03:47:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:22,829 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:47:22,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -438985760, now seen corresponding path program 5 times [2023-11-29 03:47:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:47:22,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822712311] [2023-11-29 03:47:22,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:47:22,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:22,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:47:22,831 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:47:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-29 03:47:23,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:47:23,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:23,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:47:23,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:23,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:47:23,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:47:23,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:23,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:47:23,618 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:47:23,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:47:23,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:47:23,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:23,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:47:23,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:47:24,437 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:47:24,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:47:24,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:47:24,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:24,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:47:24,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:47:24,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:24,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:47:25,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:47:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:47:25,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:25,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:47:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822712311] [2023-11-29 03:47:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822712311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:25,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:25,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:47:25,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551318714] [2023-11-29 03:47:25,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:25,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:47:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:47:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:47:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:31,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:47:31,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 243 transitions, 2139 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:31,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:47:31,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:47:31,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:47:36,175 INFO L124 PetriNetUnfolderBase]: 2650/5771 cut-off events. [2023-11-29 03:47:36,175 INFO L125 PetriNetUnfolderBase]: For 29230/29234 co-relation queries the response was YES. [2023-11-29 03:47:36,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21392 conditions, 5771 events. 2650/5771 cut-off events. For 29230/29234 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 36269 event pairs, 540 based on Foata normal form. 4/5717 useless extension candidates. Maximal degree in co-relation 21309. Up to 3331 conditions per place. [2023-11-29 03:47:36,221 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 309 selfloop transitions, 70 changer transitions 0/406 dead transitions. [2023-11-29 03:47:36,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 406 transitions, 4049 flow [2023-11-29 03:47:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 03:47:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 03:47:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3007 transitions. [2023-11-29 03:47:36,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.602002002002002 [2023-11-29 03:47:36,225 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3007 transitions. [2023-11-29 03:47:36,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3007 transitions. [2023-11-29 03:47:36,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:47:36,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3007 transitions. [2023-11-29 03:47:36,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 111.37037037037037) internal successors, (3007), 27 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:36,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 185.0) internal successors, (5180), 28 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:36,233 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 185.0) internal successors, (5180), 28 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:36,233 INFO L175 Difference]: Start difference. First operand has 271 places, 243 transitions, 2139 flow. Second operand 27 states and 3007 transitions. [2023-11-29 03:47:36,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 406 transitions, 4049 flow [2023-11-29 03:47:36,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 406 transitions, 3776 flow, removed 120 selfloop flow, removed 6 redundant places. [2023-11-29 03:47:36,324 INFO L231 Difference]: Finished difference. Result has 303 places, 280 transitions, 2719 flow [2023-11-29 03:47:36,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2719, PETRI_PLACES=303, PETRI_TRANSITIONS=280} [2023-11-29 03:47:36,325 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 128 predicate places. [2023-11-29 03:47:36,325 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 280 transitions, 2719 flow [2023-11-29 03:47:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:36,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:47:36,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:36,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-11-29 03:47:36,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:36,526 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:47:36,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1492555934, now seen corresponding path program 6 times [2023-11-29 03:47:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:47:36,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442772764] [2023-11-29 03:47:36,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:47:36,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:36,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:47:36,528 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:47:36,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-29 03:47:36,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 03:47:36,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:36,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:47:36,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:36,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:47:36,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:47:37,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:37,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:47:37,249 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:47:37,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:47:37,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:47:37,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:37,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:47:37,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:47:38,182 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:47:38,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:47:38,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:47:38,419 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:38,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:47:38,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:47:38,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:38,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:47:38,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:47:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:47:38,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:38,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:47:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442772764] [2023-11-29 03:47:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442772764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:38,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:38,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:47:38,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734567615] [2023-11-29 03:47:38,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:38,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:47:38,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:47:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:47:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:45,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:47:45,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 280 transitions, 2719 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:45,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:47:45,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:47:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:47:50,111 INFO L124 PetriNetUnfolderBase]: 2892/6294 cut-off events. [2023-11-29 03:47:50,111 INFO L125 PetriNetUnfolderBase]: For 44322/44326 co-relation queries the response was YES. [2023-11-29 03:47:50,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24699 conditions, 6294 events. 2892/6294 cut-off events. For 44322/44326 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 40640 event pairs, 597 based on Foata normal form. 4/6238 useless extension candidates. Maximal degree in co-relation 24603. Up to 3909 conditions per place. [2023-11-29 03:47:50,174 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 335 selfloop transitions, 61 changer transitions 0/423 dead transitions. [2023-11-29 03:47:50,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 423 transitions, 4604 flow [2023-11-29 03:47:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:47:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 03:47:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2789 transitions. [2023-11-29 03:47:50,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603027027027027 [2023-11-29 03:47:50,177 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2789 transitions. [2023-11-29 03:47:50,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2789 transitions. [2023-11-29 03:47:50,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:47:50,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2789 transitions. [2023-11-29 03:47:50,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.56) internal successors, (2789), 25 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:50,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:50,185 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:50,185 INFO L175 Difference]: Start difference. First operand has 303 places, 280 transitions, 2719 flow. Second operand 25 states and 2789 transitions. [2023-11-29 03:47:50,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 423 transitions, 4604 flow [2023-11-29 03:47:50,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 423 transitions, 4209 flow, removed 170 selfloop flow, removed 8 redundant places. [2023-11-29 03:47:50,396 INFO L231 Difference]: Finished difference. Result has 333 places, 309 transitions, 3151 flow [2023-11-29 03:47:50,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3151, PETRI_PLACES=333, PETRI_TRANSITIONS=309} [2023-11-29 03:47:50,397 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 158 predicate places. [2023-11-29 03:47:50,397 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 309 transitions, 3151 flow [2023-11-29 03:47:50,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:50,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:47:50,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:50,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-11-29 03:47:50,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:50,598 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:47:50,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1789033836, now seen corresponding path program 7 times [2023-11-29 03:47:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:47:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422587020] [2023-11-29 03:47:50,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:47:50,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:47:50,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:47:50,600 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:47:50,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-11-29 03:47:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:50,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:47:50,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:51,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:47:51,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:47:51,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:51,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:47:51,368 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:47:51,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:47:51,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:47:51,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:51,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:47:51,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:47:52,194 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:47:52,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:47:52,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:47:52,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:52,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:47:52,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:47:52,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:47:52,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:47:52,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:47:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:47:52,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:52,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:47:52,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422587020] [2023-11-29 03:47:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422587020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:52,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:47:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286340743] [2023-11-29 03:47:52,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:52,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:47:52,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:47:52,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:47:52,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:59,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:47:59,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 309 transitions, 3151 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:47:59,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:47:59,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:47:59,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:48:04,106 INFO L124 PetriNetUnfolderBase]: 3122/6783 cut-off events. [2023-11-29 03:48:04,106 INFO L125 PetriNetUnfolderBase]: For 61645/61655 co-relation queries the response was YES. [2023-11-29 03:48:04,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27590 conditions, 6783 events. 3122/6783 cut-off events. For 61645/61655 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 44959 event pairs, 579 based on Foata normal form. 10/6743 useless extension candidates. Maximal degree in co-relation 27479. Up to 3750 conditions per place. [2023-11-29 03:48:04,186 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 333 selfloop transitions, 104 changer transitions 0/464 dead transitions. [2023-11-29 03:48:04,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 464 transitions, 5201 flow [2023-11-29 03:48:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:48:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:48:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3115 transitions. [2023-11-29 03:48:04,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2023-11-29 03:48:04,189 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3115 transitions. [2023-11-29 03:48:04,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3115 transitions. [2023-11-29 03:48:04,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:48:04,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3115 transitions. [2023-11-29 03:48:04,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.25) internal successors, (3115), 28 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:04,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:04,196 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:04,196 INFO L175 Difference]: Start difference. First operand has 333 places, 309 transitions, 3151 flow. Second operand 28 states and 3115 transitions. [2023-11-29 03:48:04,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 464 transitions, 5201 flow [2023-11-29 03:48:04,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 464 transitions, 4772 flow, removed 198 selfloop flow, removed 6 redundant places. [2023-11-29 03:48:04,472 INFO L231 Difference]: Finished difference. Result has 364 places, 333 transitions, 3599 flow [2023-11-29 03:48:04,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3599, PETRI_PLACES=364, PETRI_TRANSITIONS=333} [2023-11-29 03:48:04,472 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 189 predicate places. [2023-11-29 03:48:04,473 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 333 transitions, 3599 flow [2023-11-29 03:48:04,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:04,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:48:04,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:04,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-11-29 03:48:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:04,674 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:48:04,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1139114322, now seen corresponding path program 8 times [2023-11-29 03:48:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:48:04,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067434617] [2023-11-29 03:48:04,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:48:04,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:48:04,676 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:48:04,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 03:48:05,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:48:05,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:05,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:48:05,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:05,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:48:05,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:48:05,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:05,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:48:05,410 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:48:05,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:48:05,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:48:05,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:05,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:48:05,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:48:06,090 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:48:06,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:48:06,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:48:06,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:06,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:48:06,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:48:06,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:06,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:48:06,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:48:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:48:06,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:48:06,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:48:06,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067434617] [2023-11-29 03:48:06,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067434617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:06,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:48:06,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:48:06,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850009782] [2023-11-29 03:48:06,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:06,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:48:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:48:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:48:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:48:14,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:48:14,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 333 transitions, 3599 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:14,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:48:14,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:48:14,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:48:20,023 INFO L124 PetriNetUnfolderBase]: 3295/7109 cut-off events. [2023-11-29 03:48:20,024 INFO L125 PetriNetUnfolderBase]: For 80744/80758 co-relation queries the response was YES. [2023-11-29 03:48:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30138 conditions, 7109 events. 3295/7109 cut-off events. For 80744/80758 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 47701 event pairs, 581 based on Foata normal form. 10/7067 useless extension candidates. Maximal degree in co-relation 30016. Up to 3415 conditions per place. [2023-11-29 03:48:20,109 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 324 selfloop transitions, 135 changer transitions 0/486 dead transitions. [2023-11-29 03:48:20,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 486 transitions, 5737 flow [2023-11-29 03:48:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:48:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 03:48:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3118 transitions. [2023-11-29 03:48:20,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6019305019305019 [2023-11-29 03:48:20,113 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3118 transitions. [2023-11-29 03:48:20,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3118 transitions. [2023-11-29 03:48:20,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:48:20,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3118 transitions. [2023-11-29 03:48:20,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 111.35714285714286) internal successors, (3118), 28 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:20,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:20,122 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 185.0) internal successors, (5365), 29 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:20,123 INFO L175 Difference]: Start difference. First operand has 364 places, 333 transitions, 3599 flow. Second operand 28 states and 3118 transitions. [2023-11-29 03:48:20,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 486 transitions, 5737 flow [2023-11-29 03:48:20,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 486 transitions, 5314 flow, removed 189 selfloop flow, removed 7 redundant places. [2023-11-29 03:48:20,401 INFO L231 Difference]: Finished difference. Result has 393 places, 354 transitions, 4158 flow [2023-11-29 03:48:20,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4158, PETRI_PLACES=393, PETRI_TRANSITIONS=354} [2023-11-29 03:48:20,402 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 218 predicate places. [2023-11-29 03:48:20,402 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 354 transitions, 4158 flow [2023-11-29 03:48:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:20,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:48:20,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:20,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-11-29 03:48:20,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:20,603 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:48:20,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2000630362, now seen corresponding path program 9 times [2023-11-29 03:48:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:48:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667924394] [2023-11-29 03:48:20,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:48:20,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:48:20,605 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:48:20,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-11-29 03:48:20,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 03:48:20,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:20,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:48:20,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:21,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:48:21,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:48:21,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:21,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:48:21,393 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:48:21,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:48:21,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:48:21,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:21,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:48:21,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:48:22,086 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:48:22,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:48:22,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:48:22,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:22,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:48:22,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:48:22,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:22,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:48:22,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:48:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:48:22,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:48:22,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:48:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667924394] [2023-11-29 03:48:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667924394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:22,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:48:22,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:48:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774084326] [2023-11-29 03:48:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:48:22,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:48:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:48:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:48:29,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:48:29,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 354 transitions, 4158 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:29,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:48:29,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:48:29,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:48:35,413 INFO L124 PetriNetUnfolderBase]: 3463/7462 cut-off events. [2023-11-29 03:48:35,413 INFO L125 PetriNetUnfolderBase]: For 103033/103045 co-relation queries the response was YES. [2023-11-29 03:48:35,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32748 conditions, 7462 events. 3463/7462 cut-off events. For 103033/103045 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 50999 event pairs, 256 based on Foata normal form. 10/7436 useless extension candidates. Maximal degree in co-relation 32616. Up to 1706 conditions per place. [2023-11-29 03:48:35,506 INFO L140 encePairwiseOnDemand]: 160/185 looper letters, 337 selfloop transitions, 185 changer transitions 0/549 dead transitions. [2023-11-29 03:48:35,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 549 transitions, 6777 flow [2023-11-29 03:48:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:48:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 03:48:35,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3680 transitions. [2023-11-29 03:48:35,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027846027846028 [2023-11-29 03:48:35,510 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3680 transitions. [2023-11-29 03:48:35,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3680 transitions. [2023-11-29 03:48:35,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:48:35,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3680 transitions. [2023-11-29 03:48:35,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 111.51515151515152) internal successors, (3680), 33 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:35,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:35,518 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 185.0) internal successors, (6290), 34 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:35,518 INFO L175 Difference]: Start difference. First operand has 393 places, 354 transitions, 4158 flow. Second operand 33 states and 3680 transitions. [2023-11-29 03:48:35,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 549 transitions, 6777 flow [2023-11-29 03:48:36,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 549 transitions, 6162 flow, removed 233 selfloop flow, removed 13 redundant places. [2023-11-29 03:48:36,047 INFO L231 Difference]: Finished difference. Result has 423 places, 385 transitions, 5061 flow [2023-11-29 03:48:36,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5061, PETRI_PLACES=423, PETRI_TRANSITIONS=385} [2023-11-29 03:48:36,048 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 248 predicate places. [2023-11-29 03:48:36,048 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 385 transitions, 5061 flow [2023-11-29 03:48:36,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:36,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:48:36,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:36,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-11-29 03:48:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:36,249 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:48:36,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -24009304, now seen corresponding path program 10 times [2023-11-29 03:48:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:48:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136055959] [2023-11-29 03:48:36,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:48:36,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:48:36,251 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:48:36,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-11-29 03:48:36,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:48:36,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:36,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:48:36,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:36,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 03:48:36,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 03:48:36,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:36,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 03:48:37,084 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-29 03:48:37,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 33 [2023-11-29 03:48:37,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 03:48:37,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:37,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 03:48:37,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 03:48:37,925 INFO L349 Elim1Store]: treesize reduction 66, result has 25.0 percent of original size [2023-11-29 03:48:37,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 53 [2023-11-29 03:48:37,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2023-11-29 03:48:38,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:38,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 03:48:38,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 03:48:38,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:48:38,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-11-29 03:48:38,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:48:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:48:38,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:48:38,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:48:38,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136055959] [2023-11-29 03:48:38,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136055959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:38,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:48:38,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 03:48:38,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384678963] [2023-11-29 03:48:38,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:38,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:48:38,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:48:38,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:48:38,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:48:44,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 185 [2023-11-29 03:48:44,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 385 transitions, 5061 flow. Second operand has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:44,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:48:44,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 185 [2023-11-29 03:48:44,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:48:48,860 INFO L124 PetriNetUnfolderBase]: 3447/7419 cut-off events. [2023-11-29 03:48:48,861 INFO L125 PetriNetUnfolderBase]: For 83846/83856 co-relation queries the response was YES. [2023-11-29 03:48:48,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32738 conditions, 7419 events. 3447/7419 cut-off events. For 83846/83856 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 50461 event pairs, 749 based on Foata normal form. 10/7372 useless extension candidates. Maximal degree in co-relation 32594. Up to 5685 conditions per place. [2023-11-29 03:48:48,957 INFO L140 encePairwiseOnDemand]: 161/185 looper letters, 433 selfloop transitions, 42 changer transitions 0/502 dead transitions. [2023-11-29 03:48:48,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 502 transitions, 7258 flow [2023-11-29 03:48:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 03:48:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 03:48:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2764 transitions. [2023-11-29 03:48:48,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976216216216216 [2023-11-29 03:48:48,961 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2764 transitions. [2023-11-29 03:48:48,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2764 transitions. [2023-11-29 03:48:48,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:48:48,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2764 transitions. [2023-11-29 03:48:48,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 110.56) internal successors, (2764), 25 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:48,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:48,966 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 185.0) internal successors, (4810), 26 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:48,966 INFO L175 Difference]: Start difference. First operand has 423 places, 385 transitions, 5061 flow. Second operand 25 states and 2764 transitions. [2023-11-29 03:48:48,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 502 transitions, 7258 flow [2023-11-29 03:48:49,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 502 transitions, 6195 flow, removed 419 selfloop flow, removed 17 redundant places. [2023-11-29 03:48:49,484 INFO L231 Difference]: Finished difference. Result has 440 places, 412 transitions, 5066 flow [2023-11-29 03:48:49,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=5066, PETRI_PLACES=440, PETRI_TRANSITIONS=412} [2023-11-29 03:48:49,485 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 265 predicate places. [2023-11-29 03:48:49,485 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 412 transitions, 5066 flow [2023-11-29 03:48:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 105.26086956521739) internal successors, (2421), 23 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:49,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:48:49,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:49,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-11-29 03:48:49,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:49,687 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:48:49,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1289587609, now seen corresponding path program 1 times [2023-11-29 03:48:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:48:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250781846] [2023-11-29 03:48:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:49,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:49,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:48:49,689 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:48:49,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-11-29 03:48:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:48:49,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:48:49,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:48:49,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:48:49,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250781846] [2023-11-29 03:48:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250781846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:49,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 03:48:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390440290] [2023-11-29 03:48:49,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:49,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:48:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:48:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:48:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:48:49,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 185 [2023-11-29 03:48:49,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 412 transitions, 5066 flow. Second operand has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:49,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:48:49,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 185 [2023-11-29 03:48:49,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:48:54,015 INFO L124 PetriNetUnfolderBase]: 5645/11915 cut-off events. [2023-11-29 03:48:54,015 INFO L125 PetriNetUnfolderBase]: For 48933/48987 co-relation queries the response was YES. [2023-11-29 03:48:54,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43247 conditions, 11915 events. 5645/11915 cut-off events. For 48933/48987 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 84267 event pairs, 1216 based on Foata normal form. 423/12196 useless extension candidates. Maximal degree in co-relation 43097. Up to 4713 conditions per place. [2023-11-29 03:48:54,219 INFO L140 encePairwiseOnDemand]: 181/185 looper letters, 456 selfloop transitions, 79 changer transitions 0/612 dead transitions. [2023-11-29 03:48:54,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 612 transitions, 7444 flow [2023-11-29 03:48:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:48:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:48:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 904 transitions. [2023-11-29 03:48:54,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8144144144144144 [2023-11-29 03:48:54,221 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 904 transitions. [2023-11-29 03:48:54,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 904 transitions. [2023-11-29 03:48:54,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:48:54,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 904 transitions. [2023-11-29 03:48:54,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:54,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:54,223 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:54,223 INFO L175 Difference]: Start difference. First operand has 440 places, 412 transitions, 5066 flow. Second operand 6 states and 904 transitions. [2023-11-29 03:48:54,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 612 transitions, 7444 flow [2023-11-29 03:48:54,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 612 transitions, 6800 flow, removed 266 selfloop flow, removed 27 redundant places. [2023-11-29 03:48:54,625 INFO L231 Difference]: Finished difference. Result has 422 places, 415 transitions, 4693 flow [2023-11-29 03:48:54,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4434, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4693, PETRI_PLACES=422, PETRI_TRANSITIONS=415} [2023-11-29 03:48:54,626 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 247 predicate places. [2023-11-29 03:48:54,626 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 415 transitions, 4693 flow [2023-11-29 03:48:54,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:54,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:48:54,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:54,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-11-29 03:48:54,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:54,827 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:48:54,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash -306622803, now seen corresponding path program 1 times [2023-11-29 03:48:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:48:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710815026] [2023-11-29 03:48:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:54,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:48:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:48:54,829 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:48:54,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-11-29 03:48:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:48:55,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:48:55,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:55,612 INFO L378 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 35 treesize of output 31 [2023-11-29 03:48:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:48:56,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:48:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710815026] [2023-11-29 03:48:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710815026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:56,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 03:48:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475982473] [2023-11-29 03:48:56,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:56,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:48:56,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:48:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:48:56,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:48:57,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:48:57,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 415 transitions, 4693 flow. Second operand has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:48:57,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:48:57,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:48:57,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:49:05,018 INFO L124 PetriNetUnfolderBase]: 7573/16991 cut-off events. [2023-11-29 03:49:05,018 INFO L125 PetriNetUnfolderBase]: For 66421/66669 co-relation queries the response was YES. [2023-11-29 03:49:05,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61544 conditions, 16991 events. 7573/16991 cut-off events. For 66421/66669 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 138292 event pairs, 2201 based on Foata normal form. 81/16822 useless extension candidates. Maximal degree in co-relation 61411. Up to 4327 conditions per place. [2023-11-29 03:49:05,318 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 657 selfloop transitions, 193 changer transitions 0/917 dead transitions. [2023-11-29 03:49:05,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 917 transitions, 9973 flow [2023-11-29 03:49:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:49:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 03:49:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2452 transitions. [2023-11-29 03:49:05,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7363363363363363 [2023-11-29 03:49:05,321 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2452 transitions. [2023-11-29 03:49:05,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2452 transitions. [2023-11-29 03:49:05,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:49:05,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2452 transitions. [2023-11-29 03:49:05,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.22222222222223) internal successors, (2452), 18 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:05,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:05,326 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:05,326 INFO L175 Difference]: Start difference. First operand has 422 places, 415 transitions, 4693 flow. Second operand 18 states and 2452 transitions. [2023-11-29 03:49:05,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 917 transitions, 9973 flow [2023-11-29 03:49:06,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 917 transitions, 9831 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-29 03:49:06,053 INFO L231 Difference]: Finished difference. Result has 451 places, 481 transitions, 5991 flow [2023-11-29 03:49:06,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4593, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5991, PETRI_PLACES=451, PETRI_TRANSITIONS=481} [2023-11-29 03:49:06,054 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 276 predicate places. [2023-11-29 03:49:06,054 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 481 transitions, 5991 flow [2023-11-29 03:49:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:49:06,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:06,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-11-29 03:49:06,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:06,255 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:49:06,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1009426555, now seen corresponding path program 2 times [2023-11-29 03:49:06,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:49:06,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994792716] [2023-11-29 03:49:06,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:49:06,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:06,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:49:06,257 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:49:06,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-11-29 03:49:06,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:49:06,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:06,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:49:06,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:06,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:07,120 INFO L378 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 35 treesize of output 31 [2023-11-29 03:49:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:07,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:49:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994792716] [2023-11-29 03:49:07,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994792716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:07,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 03:49:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725574187] [2023-11-29 03:49:07,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:07,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:49:07,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:49:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:49:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:49:09,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:49:09,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 481 transitions, 5991 flow. Second operand has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:09,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:49:09,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:49:09,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:49:17,526 INFO L124 PetriNetUnfolderBase]: 8020/17977 cut-off events. [2023-11-29 03:49:17,526 INFO L125 PetriNetUnfolderBase]: For 93198/93562 co-relation queries the response was YES. [2023-11-29 03:49:17,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70330 conditions, 17977 events. 8020/17977 cut-off events. For 93198/93562 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 148450 event pairs, 2494 based on Foata normal form. 104/17792 useless extension candidates. Maximal degree in co-relation 70182. Up to 4016 conditions per place. [2023-11-29 03:49:17,932 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 526 selfloop transitions, 205 changer transitions 0/798 dead transitions. [2023-11-29 03:49:17,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 798 transitions, 9831 flow [2023-11-29 03:49:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:49:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 03:49:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1757 transitions. [2023-11-29 03:49:17,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7305613305613305 [2023-11-29 03:49:17,934 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1757 transitions. [2023-11-29 03:49:17,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1757 transitions. [2023-11-29 03:49:17,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:49:17,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1757 transitions. [2023-11-29 03:49:17,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.15384615384616) internal successors, (1757), 13 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:17,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:17,937 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:17,937 INFO L175 Difference]: Start difference. First operand has 451 places, 481 transitions, 5991 flow. Second operand 13 states and 1757 transitions. [2023-11-29 03:49:17,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 798 transitions, 9831 flow [2023-11-29 03:49:18,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 798 transitions, 9602 flow, removed 104 selfloop flow, removed 6 redundant places. [2023-11-29 03:49:18,736 INFO L231 Difference]: Finished difference. Result has 466 places, 508 transitions, 6926 flow [2023-11-29 03:49:18,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5836, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6926, PETRI_PLACES=466, PETRI_TRANSITIONS=508} [2023-11-29 03:49:18,737 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 291 predicate places. [2023-11-29 03:49:18,737 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 508 transitions, 6926 flow [2023-11-29 03:49:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:18,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:49:18,737 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:18,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-11-29 03:49:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:18,938 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:49:18,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 457929323, now seen corresponding path program 3 times [2023-11-29 03:49:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:49:18,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781386281] [2023-11-29 03:49:18,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:49:18,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:18,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:49:18,939 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:49:18,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-11-29 03:49:19,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:49:19,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:19,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:49:19,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:19,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:19,832 INFO L378 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 36 treesize of output 32 [2023-11-29 03:49:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:20,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:49:20,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781386281] [2023-11-29 03:49:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781386281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:20,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:20,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 03:49:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662101151] [2023-11-29 03:49:20,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:49:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:49:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:49:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:49:24,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:49:24,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 508 transitions, 6926 flow. Second operand has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:24,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:49:24,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:49:24,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:49:32,208 INFO L124 PetriNetUnfolderBase]: 8571/19415 cut-off events. [2023-11-29 03:49:32,208 INFO L125 PetriNetUnfolderBase]: For 126723/127125 co-relation queries the response was YES. [2023-11-29 03:49:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79397 conditions, 19415 events. 8571/19415 cut-off events. For 126723/127125 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 164570 event pairs, 2803 based on Foata normal form. 120/19247 useless extension candidates. Maximal degree in co-relation 79245. Up to 6214 conditions per place. [2023-11-29 03:49:32,502 INFO L140 encePairwiseOnDemand]: 176/185 looper letters, 539 selfloop transitions, 185 changer transitions 0/791 dead transitions. [2023-11-29 03:49:32,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 791 transitions, 10262 flow [2023-11-29 03:49:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:49:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:49:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1602 transitions. [2023-11-29 03:49:32,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216216216216216 [2023-11-29 03:49:32,504 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1602 transitions. [2023-11-29 03:49:32,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1602 transitions. [2023-11-29 03:49:32,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:49:32,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1602 transitions. [2023-11-29 03:49:32,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 133.5) internal successors, (1602), 12 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:32,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:32,507 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:32,507 INFO L175 Difference]: Start difference. First operand has 466 places, 508 transitions, 6926 flow. Second operand 12 states and 1602 transitions. [2023-11-29 03:49:32,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 791 transitions, 10262 flow [2023-11-29 03:49:33,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 791 transitions, 9979 flow, removed 38 selfloop flow, removed 11 redundant places. [2023-11-29 03:49:33,606 INFO L231 Difference]: Finished difference. Result has 469 places, 525 transitions, 7524 flow [2023-11-29 03:49:33,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6704, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7524, PETRI_PLACES=469, PETRI_TRANSITIONS=525} [2023-11-29 03:49:33,606 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 294 predicate places. [2023-11-29 03:49:33,607 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 525 transitions, 7524 flow [2023-11-29 03:49:33,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:33,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:49:33,607 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:33,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2023-11-29 03:49:33,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:33,807 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:49:33,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1845702105, now seen corresponding path program 4 times [2023-11-29 03:49:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:49:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836409287] [2023-11-29 03:49:33,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:49:33,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:49:33,809 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:49:33,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-11-29 03:49:34,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:49:34,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:34,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:49:34,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:34,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:34,520 INFO L378 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 35 treesize of output 31 [2023-11-29 03:49:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:35,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:49:35,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836409287] [2023-11-29 03:49:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836409287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:35,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:35,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 03:49:35,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880703155] [2023-11-29 03:49:35,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:35,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:49:35,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:49:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:49:35,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:49:37,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:49:37,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 525 transitions, 7524 flow. Second operand has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:37,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:49:37,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:49:37,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:49:48,919 INFO L124 PetriNetUnfolderBase]: 11613/26060 cut-off events. [2023-11-29 03:49:48,919 INFO L125 PetriNetUnfolderBase]: For 187957/188389 co-relation queries the response was YES. [2023-11-29 03:49:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107755 conditions, 26060 events. 11613/26060 cut-off events. For 187957/188389 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 231391 event pairs, 2994 based on Foata normal form. 118/25749 useless extension candidates. Maximal degree in co-relation 107607. Up to 7168 conditions per place. [2023-11-29 03:49:49,514 INFO L140 encePairwiseOnDemand]: 177/185 looper letters, 766 selfloop transitions, 235 changer transitions 0/1068 dead transitions. [2023-11-29 03:49:49,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1068 transitions, 14282 flow [2023-11-29 03:49:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:49:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 03:49:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2423 transitions. [2023-11-29 03:49:49,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7276276276276277 [2023-11-29 03:49:49,517 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2423 transitions. [2023-11-29 03:49:49,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2423 transitions. [2023-11-29 03:49:49,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:49:49,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2423 transitions. [2023-11-29 03:49:49,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 134.61111111111111) internal successors, (2423), 18 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:49,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:49,521 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 185.0) internal successors, (3515), 19 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:49,521 INFO L175 Difference]: Start difference. First operand has 469 places, 525 transitions, 7524 flow. Second operand 18 states and 2423 transitions. [2023-11-29 03:49:49,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1068 transitions, 14282 flow [2023-11-29 03:49:50,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1068 transitions, 14019 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-11-29 03:49:50,901 INFO L231 Difference]: Finished difference. Result has 490 places, 617 transitions, 9277 flow [2023-11-29 03:49:50,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7307, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9277, PETRI_PLACES=490, PETRI_TRANSITIONS=617} [2023-11-29 03:49:50,901 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 315 predicate places. [2023-11-29 03:49:50,901 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 617 transitions, 9277 flow [2023-11-29 03:49:50,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:50,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:49:50,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:50,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2023-11-29 03:49:51,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:51,102 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:49:51,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:51,103 INFO L85 PathProgramCache]: Analyzing trace with hash -783974989, now seen corresponding path program 5 times [2023-11-29 03:49:51,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:49:51,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648631874] [2023-11-29 03:49:51,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:49:51,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:49:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:49:51,104 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:49:51,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-11-29 03:49:51,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:49:51,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:51,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:49:51,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:51,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:51,872 INFO L378 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 36 treesize of output 32 [2023-11-29 03:49:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:49:52,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:49:52,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648631874] [2023-11-29 03:49:52,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648631874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:52,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:52,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 03:49:52,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857399588] [2023-11-29 03:49:52,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:52,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:49:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:49:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:49:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:49:56,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2023-11-29 03:49:56,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 617 transitions, 9277 flow. Second operand has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:49:56,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:49:56,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2023-11-29 03:49:56,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:50:10,003 INFO L124 PetriNetUnfolderBase]: 13284/29907 cut-off events. [2023-11-29 03:50:10,004 INFO L125 PetriNetUnfolderBase]: For 263525/263951 co-relation queries the response was YES. [2023-11-29 03:50:10,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129448 conditions, 29907 events. 13284/29907 cut-off events. For 263525/263951 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 271736 event pairs, 3239 based on Foata normal form. 122/29490 useless extension candidates. Maximal degree in co-relation 129291. Up to 7758 conditions per place. [2023-11-29 03:50:10,742 INFO L140 encePairwiseOnDemand]: 177/185 looper letters, 834 selfloop transitions, 266 changer transitions 0/1167 dead transitions. [2023-11-29 03:50:10,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1167 transitions, 16060 flow [2023-11-29 03:50:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:50:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 03:50:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3028 transitions. [2023-11-29 03:50:10,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7116333725029377 [2023-11-29 03:50:10,746 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3028 transitions. [2023-11-29 03:50:10,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3028 transitions. [2023-11-29 03:50:10,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:50:10,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3028 transitions. [2023-11-29 03:50:10,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 131.65217391304347) internal successors, (3028), 23 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:50:10,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 185.0) internal successors, (4440), 24 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:50:10,754 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 185.0) internal successors, (4440), 24 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:50:10,754 INFO L175 Difference]: Start difference. First operand has 490 places, 617 transitions, 9277 flow. Second operand 23 states and 3028 transitions. [2023-11-29 03:50:10,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1167 transitions, 16060 flow [2023-11-29 03:50:13,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1167 transitions, 15595 flow, removed 149 selfloop flow, removed 5 redundant places. [2023-11-29 03:50:13,121 INFO L231 Difference]: Finished difference. Result has 518 places, 667 transitions, 10739 flow [2023-11-29 03:50:13,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=8932, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=10739, PETRI_PLACES=518, PETRI_TRANSITIONS=667} [2023-11-29 03:50:13,121 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, 343 predicate places. [2023-11-29 03:50:13,122 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 667 transitions, 10739 flow [2023-11-29 03:50:13,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.16666666666667) internal successors, (1406), 12 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:50:13,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:50:13,122 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:50:13,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-11-29 03:50:13,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:50:13,322 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] === [2023-11-29 03:50:13,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:50:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash -963153305, now seen corresponding path program 1 times [2023-11-29 03:50:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:50:13,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042765060] [2023-11-29 03:50:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:50:13,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:50:13,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:50:13,324 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:50:13,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-11-29 03:50:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:50:13,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:50:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:50:14,090 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 03:50:14,090 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:50:14,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (141 of 142 remaining) [2023-11-29 03:50:14,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 142 remaining) [2023-11-29 03:50:14,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 142 remaining) [2023-11-29 03:50:14,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 142 remaining) [2023-11-29 03:50:14,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 142 remaining) [2023-11-29 03:50:14,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 142 remaining) [2023-11-29 03:50:14,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (128 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 142 remaining) [2023-11-29 03:50:14,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (121 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (119 of 142 remaining) [2023-11-29 03:50:14,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 142 remaining) [2023-11-29 03:50:14,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 142 remaining) [2023-11-29 03:50:14,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (98 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 142 remaining) [2023-11-29 03:50:14,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 142 remaining) [2023-11-29 03:50:14,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 142 remaining) [2023-11-29 03:50:14,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 142 remaining) [2023-11-29 03:50:14,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err18ASSERT_VIOLATIONMEMORY_LEAK (59 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 142 remaining) [2023-11-29 03:50:14,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 142 remaining) [2023-11-29 03:50:14,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err40ASSERT_VIOLATIONMEMORY_LEAK (38 of 142 remaining) [2023-11-29 03:50:14,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 142 remaining) [2023-11-29 03:50:14,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 142 remaining) [2023-11-29 03:50:14,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 142 remaining) [2023-11-29 03:50:14,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 142 remaining) [2023-11-29 03:50:14,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 142 remaining) [2023-11-29 03:50:14,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 142 remaining) [2023-11-29 03:50:14,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-11-29 03:50:14,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:50:14,309 INFO L445 BasicCegarLoop]: Path program histogram: [10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:50:14,316 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 03:50:14,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:50:14,388 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated [2023-11-29 03:50:14,389 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated [2023-11-29 03:50:14,391 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-29 03:50:14,391 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-29 03:50:14,392 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-29 03:50:14,392 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-29 03:50:14,394 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated [2023-11-29 03:50:14,394 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-11-29 03:50:14,395 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-11-29 03:50:14,395 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated [2023-11-29 03:50:14,397 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-11-29 03:50:14,397 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated [2023-11-29 03:50:14,398 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-11-29 03:50:14,398 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated [2023-11-29 03:50:14,398 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated [2023-11-29 03:50:14,399 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-11-29 03:50:14,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:50:14 BasicIcfg [2023-11-29 03:50:14,412 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:50:14,412 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:50:14,412 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:50:14,412 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:50:14,413 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:45:33" (3/4) ... [2023-11-29 03:50:14,414 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 03:50:14,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:50:14,415 INFO L158 Benchmark]: Toolchain (without parser) took 283061.33ms. Allocated memory was 83.9MB in the beginning and 6.0GB in the end (delta: 6.0GB). Free memory was 56.0MB in the beginning and 4.5GB in the end (delta: -4.5GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-11-29 03:50:14,415 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 58.7MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:50:14,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.17ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 44.1MB in the end (delta: 11.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-11-29 03:50:14,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.77ms. Allocated memory is still 83.9MB. Free memory was 44.1MB in the beginning and 41.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:50:14,416 INFO L158 Benchmark]: Boogie Preprocessor took 69.60ms. Allocated memory is still 83.9MB. Free memory was 41.0MB in the beginning and 36.5MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:50:14,416 INFO L158 Benchmark]: RCFGBuilder took 1217.99ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 36.5MB in the beginning and 41.5MB in the end (delta: -5.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-11-29 03:50:14,417 INFO L158 Benchmark]: TraceAbstraction took 281065.97ms. Allocated memory was 100.7MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 40.8MB in the beginning and 4.5GB in the end (delta: -4.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-29 03:50:14,417 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 6.0GB. Free memory is still 4.5GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:50:14,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 58.7MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.17ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 44.1MB in the end (delta: 11.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.77ms. Allocated memory is still 83.9MB. Free memory was 44.1MB in the beginning and 41.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.60ms. Allocated memory is still 83.9MB. Free memory was 41.0MB in the beginning and 36.5MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1217.99ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 36.5MB in the beginning and 41.5MB in the end (delta: -5.0MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 281065.97ms. Allocated memory was 100.7MB in the beginning and 6.0GB in the end (delta: 5.9GB). Free memory was 40.8MB in the beginning and 4.5GB in the end (delta: -4.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 6.0GB. Free memory is still 4.5GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(400)]; [L949] 0 int stored_elements[(400)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L955] 0 q->tail=0 VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1062] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={15:0}, id2={7:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1063] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={15:0}, id2={7:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1007] 1 int value, i; VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1036] 2 int i; [L1037] 2 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(400) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] 2 i++ VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L982] COND FALSE 1 !(q->tail == (400)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=0, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1018] 1 i=0 VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1018] COND TRUE 1 i<((400)-1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ VAL [\old(x)=1, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=1] [L981] 1 q->amount++ [L982] EXPR 1 q->tail VAL [arg={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L982] COND FALSE 1 !(q->tail == (400)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ VAL [\old(x)=1, dequeue_flag=0, enqueue_flag=1, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=1] [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L1037] COND TRUE 2 i<(400) VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L996] 2 q->amount-- [L997] EXPR 2 q->head VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L997] COND FALSE 2 !(q->head == (400)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, q={5:0}, q={5:0}, queue={5:0}, stored_elements={4:0}, x=0] [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [arg={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] CALL 2 reach_error() [L21] COND FALSE 2 !(0) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L21] 2 __assert_fail ("0", "queue_longer.c", 4, __extension__ __PRETTY_FUNCTION__) VAL [dequeue_flag=1, enqueue_flag=0, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 301 locations, 142 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 280.8s, OverallIterations: 50, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 227.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34938 SdHoareTripleChecker+Valid, 143.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29757 mSDsluCounter, 75694 SdHoareTripleChecker+Invalid, 126.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74390 mSDsCounter, 488 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110647 IncrementalHoareTripleChecker+Invalid, 111135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 488 mSolverCounterUnsat, 1304 mSDtfsCounter, 110647 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2608 GetRequests, 2004 SyntacticMatches, 1 SemanticMatches, 603 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4228 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10739occurred in iteration=49, InterpolantAutomatonStates: 532, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 2110 NumberOfCodeBlocks, 2110 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 2390 ConstructedInterpolants, 63 QuantifiedInterpolants, 35701 SizeOfPredicates, 580 NumberOfNonLiveVariables, 11831 ConjunctsInSsa, 1133 ConjunctsInUnsatCore, 55 InterpolantComputations, 43 PerfectInterpolantSequences, 13/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 03:50:14,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fb718a1-076a-414c-96d0-9e563385abcb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample