./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl --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 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:33:47,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:33:47,373 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:33:47,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:33:47,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:33:47,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:33:47,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:33:47,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:33:47,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:33:47,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:33:47,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:33:47,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:33:47,437 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:33:47,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:33:47,439 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:33:47,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:33:47,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:33:47,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:33:47,441 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:33:47,441 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:33:47,442 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:33:47,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:33:47,443 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:33:47,443 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:33:47,444 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:33:47,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:33:47,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:33:47,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:33:47,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:33:47,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:47,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:33:47,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:33:47,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:33:47,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:33:47,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:33:47,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:33:47,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:33:47,449 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:33:47,450 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_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 [2023-11-12 02:33:47,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:33:47,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:33:47,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:33:47,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:33:47,770 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:33:47,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2023-11-12 02:33:50,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:51,301 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:51,302 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2023-11-12 02:33:51,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/data/4f5a94b41/fcaa62e0e9b2456f9fe15e32b4a8b0d6/FLAG7adb746d8 [2023-11-12 02:33:51,334 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/data/4f5a94b41/fcaa62e0e9b2456f9fe15e32b4a8b0d6 [2023-11-12 02:33:51,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:51,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:51,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:51,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:51,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:51,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:51" (1/1) ... [2023-11-12 02:33:51,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb322e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:51, skipping insertion in model container [2023-11-12 02:33:51,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:51" (1/1) ... [2023-11-12 02:33:51,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:51,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:51,925 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:52,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:52,102 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:52,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52 WrapperNode [2023-11-12 02:33:52,103 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:52,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:52,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:52,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:52,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,166 INFO L138 Inliner]: procedures = 266, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-11-12 02:33:52,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:52,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:52,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:52,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:52,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:52,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:52,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:52,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:52,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:52,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:52,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:52,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:33:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:33:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:33:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:33:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:33:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:33:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:33:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:33:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:52,284 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:33:52,428 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:52,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:52,616 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:52,623 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:52,624 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:33:52,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:52 BoogieIcfgContainer [2023-11-12 02:33:52,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:52,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:33:52,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:33:52,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:33:52,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:33:51" (1/3) ... [2023-11-12 02:33:52,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e1b88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:52, skipping insertion in model container [2023-11-12 02:33:52,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (2/3) ... [2023-11-12 02:33:52,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e1b88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:52, skipping insertion in model container [2023-11-12 02:33:52,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:52" (3/3) ... [2023-11-12 02:33:52,637 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_13-equ_proc_nr.i [2023-11-12 02:33:52,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:33:52,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-12 02:33:52,658 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:33:52,712 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:33:52,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 75 transitions, 154 flow [2023-11-12 02:33:52,803 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-12 02:33:52,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:52,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-11-12 02:33:52,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 75 transitions, 154 flow [2023-11-12 02:33:52,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 74 transitions, 151 flow [2023-11-12 02:33:52,817 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:33:52,864 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 74 transitions, 151 flow [2023-11-12 02:33:52,867 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 74 transitions, 151 flow [2023-11-12 02:33:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 74 transitions, 151 flow [2023-11-12 02:33:52,947 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-12 02:33:52,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:52,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-11-12 02:33:52,949 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-11-12 02:33:57,977 INFO L134 LiptonReduction]: Checked pairs total: 888 [2023-11-12 02:33:57,977 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-11-12 02:33:57,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:33:57,999 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;@56d37cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:33:58,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-12 02:33:58,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:33:58,002 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:33:58,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:58,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:58,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:33:58,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:33:58,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 271, now seen corresponding path program 1 times [2023-11-12 02:33:58,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797823842] [2023-11-12 02:33:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797823842] [2023-11-12 02:33:58,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797823842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:58,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:33:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990501264] [2023-11-12 02:33:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:33:58,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:33:58,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:33:58,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 152 [2023-11-12 02:33:58,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 35 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:58,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 152 [2023-11-12 02:33:58,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:58,254 INFO L124 PetriNetUnfolderBase]: 30/78 cut-off events. [2023-11-12 02:33:58,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:58,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 78 events. 30/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 269 event pairs, 30 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 147. Up to 74 conditions per place. [2023-11-12 02:33:58,257 INFO L140 encePairwiseOnDemand]: 150/152 looper letters, 13 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-11-12 02:33:58,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 57 flow [2023-11-12 02:33:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:33:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:33:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-11-12 02:33:58,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361842105263158 [2023-11-12 02:33:58,273 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-11-12 02:33:58,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-11-12 02:33:58,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:58,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-11-12 02:33:58,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,287 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,290 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 35 flow. Second operand 2 states and 163 transitions. [2023-11-12 02:33:58,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 57 flow [2023-11-12 02:33:58,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:33:58,296 INFO L231 Difference]: Finished difference. Result has 18 places, 14 transitions, 30 flow [2023-11-12 02:33:58,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2023-11-12 02:33:58,302 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-11-12 02:33:58,303 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 30 flow [2023-11-12 02:33:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:58,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:33:58,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:33:58,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:33:58,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 267686, now seen corresponding path program 1 times [2023-11-12 02:33:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164097099] [2023-11-12 02:33:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:58,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164097099] [2023-11-12 02:33:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164097099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:58,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:33:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907776195] [2023-11-12 02:33:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:58,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:58,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 152 [2023-11-12 02:33:58,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:58,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 152 [2023-11-12 02:33:58,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:58,940 INFO L124 PetriNetUnfolderBase]: 24/64 cut-off events. [2023-11-12 02:33:58,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:58,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 64 events. 24/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 199 event pairs, 24 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 126. Up to 60 conditions per place. [2023-11-12 02:33:58,944 INFO L140 encePairwiseOnDemand]: 150/152 looper letters, 11 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-11-12 02:33:58,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 52 flow [2023-11-12 02:33:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:33:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:33:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-11-12 02:33:58,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2023-11-12 02:33:58,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-11-12 02:33:58,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-11-12 02:33:58,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:58,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-11-12 02:33:58,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:33:58,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:33:58,961 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 30 flow. Second operand 3 states and 226 transitions. [2023-11-12 02:33:58,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 52 flow [2023-11-12 02:33:58,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 52 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:33:58,962 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 30 flow [2023-11-12 02:33:58,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-11-12 02:33:58,963 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-12 02:33:58,965 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 30 flow [2023-11-12 02:33:58,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:58,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:58,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:33:58,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:33:58,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:33:58,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash 267702, now seen corresponding path program 1 times [2023-11-12 02:33:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:58,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233646468] [2023-11-12 02:33:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:58,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:59,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:59,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233646468] [2023-11-12 02:33:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233646468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:59,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:59,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:33:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708930693] [2023-11-12 02:33:59,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:59,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:59,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 152 [2023-11-12 02:33:59,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:59,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 152 [2023-11-12 02:33:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:59,343 INFO L124 PetriNetUnfolderBase]: 20/55 cut-off events. [2023-11-12 02:33:59,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:59,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 55 events. 20/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 157 event pairs, 12 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 109. Up to 33 conditions per place. [2023-11-12 02:33:59,345 INFO L140 encePairwiseOnDemand]: 148/152 looper letters, 12 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2023-11-12 02:33:59,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 66 flow [2023-11-12 02:33:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:33:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:33:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-12 02:33:59,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2023-11-12 02:33:59,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-12 02:33:59,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-12 02:33:59,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:59,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-12 02:33:59,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:33:59,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:33:59,353 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 30 flow. Second operand 3 states and 223 transitions. [2023-11-12 02:33:59,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 66 flow [2023-11-12 02:33:59,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:33:59,354 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 33 flow [2023-11-12 02:33:59,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-11-12 02:33:59,356 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-12 02:33:59,359 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 33 flow [2023-11-12 02:33:59,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:59,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:33:59,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:33:59,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:33:59,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash 267703, now seen corresponding path program 1 times [2023-11-12 02:33:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:59,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644560250] [2023-11-12 02:33:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644560250] [2023-11-12 02:33:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644560250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:59,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:33:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098149116] [2023-11-12 02:33:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:59,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 152 [2023-11-12 02:33:59,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:59,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 152 [2023-11-12 02:33:59,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:33:59,811 INFO L124 PetriNetUnfolderBase]: 16/46 cut-off events. [2023-11-12 02:33:59,811 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-12 02:33:59,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 46 events. 16/46 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 event pairs, 12 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 102. Up to 33 conditions per place. [2023-11-12 02:33:59,812 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 10 selfloop transitions, 2 changer transitions 2/15 dead transitions. [2023-11-12 02:33:59,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 15 transitions, 67 flow [2023-11-12 02:33:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:33:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:33:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-11-12 02:33:59,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2023-11-12 02:33:59,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-11-12 02:33:59,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-11-12 02:33:59,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:59,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-11-12 02:33:59,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:33:59,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:33:59,819 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 33 flow. Second operand 3 states and 222 transitions. [2023-11-12 02:33:59,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 15 transitions, 67 flow [2023-11-12 02:33:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:33:59,820 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 29 flow [2023-11-12 02:33:59,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-11-12 02:33:59,823 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-11-12 02:33:59,823 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 29 flow [2023-11-12 02:33:59,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:33:59,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:33:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:33:59,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:33:59,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash 8297312, now seen corresponding path program 1 times [2023-11-12 02:33:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:59,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612670382] [2023-11-12 02:33:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:59,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612670382] [2023-11-12 02:33:59,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612670382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:59,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:59,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:33:59,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868186097] [2023-11-12 02:33:59,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:59,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:33:59,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:59,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:33:59,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:33:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 152 [2023-11-12 02:33:59,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:59,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:33:59,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 152 [2023-11-12 02:33:59,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:00,016 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2023-11-12 02:34:00,017 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:34:00,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 40 events. 10/40 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 101 event pairs, 6 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 85. Up to 23 conditions per place. [2023-11-12 02:34:00,017 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 9 selfloop transitions, 4 changer transitions 0/14 dead transitions. [2023-11-12 02:34:00,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 61 flow [2023-11-12 02:34:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:34:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:34:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-12 02:34:00,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2023-11-12 02:34:00,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-12 02:34:00,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-12 02:34:00,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:00,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-12 02:34:00,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:34:00,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:34:00,024 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 29 flow. Second operand 3 states and 224 transitions. [2023-11-12 02:34:00,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 61 flow [2023-11-12 02:34:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:34:00,025 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 47 flow [2023-11-12 02:34:00,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-11-12 02:34:00,026 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-11-12 02:34:00,026 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 47 flow [2023-11-12 02:34:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:00,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:34:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:34:00,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:34:00,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash -615063235, now seen corresponding path program 1 times [2023-11-12 02:34:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338611491] [2023-11-12 02:34:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:34:00,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:00,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338611491] [2023-11-12 02:34:00,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338611491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:00,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:34:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918966002] [2023-11-12 02:34:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:00,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:34:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:34:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:34:00,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 152 [2023-11-12 02:34:00,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:00,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 152 [2023-11-12 02:34:00,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:00,164 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-11-12 02:34:00,164 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-12 02:34:00,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 31 events. 8/31 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 6 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 78. Up to 19 conditions per place. [2023-11-12 02:34:00,165 INFO L140 encePairwiseOnDemand]: 149/152 looper letters, 6 selfloop transitions, 2 changer transitions 4/13 dead transitions. [2023-11-12 02:34:00,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 69 flow [2023-11-12 02:34:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:34:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:34:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-11-12 02:34:00,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-12 02:34:00,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-11-12 02:34:00,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-11-12 02:34:00,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:00,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-11-12 02:34:00,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:34:00,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:34:00,171 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 47 flow. Second operand 3 states and 220 transitions. [2023-11-12 02:34:00,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 69 flow [2023-11-12 02:34:00,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 63 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:34:00,172 INFO L231 Difference]: Finished difference. Result has 19 places, 8 transitions, 29 flow [2023-11-12 02:34:00,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=19, PETRI_TRANSITIONS=8} [2023-11-12 02:34:00,173 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-12 02:34:00,173 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 8 transitions, 29 flow [2023-11-12 02:34:00,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:00,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:00,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:34:00,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-12 02:34:00,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:00,175 INFO L85 PathProgramCache]: Analyzing trace with hash 550677801, now seen corresponding path program 1 times [2023-11-12 02:34:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:00,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142262247] [2023-11-12 02:34:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:34:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142262247] [2023-11-12 02:34:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142262247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:34:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51257129] [2023-11-12 02:34:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:00,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:34:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:34:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:34:00,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 152 [2023-11-12 02:34:00,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 8 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:00,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 152 [2023-11-12 02:34:00,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:00,368 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-11-12 02:34:00,369 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:34:00,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 14 events. 3/14 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 3 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2023-11-12 02:34:00,369 INFO L140 encePairwiseOnDemand]: 150/152 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-11-12 02:34:00,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 7 transitions, 37 flow [2023-11-12 02:34:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:34:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:34:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-12 02:34:00,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2023-11-12 02:34:00,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-12 02:34:00,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-12 02:34:00,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:00,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-12 02:34:00,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:34:00,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 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) [2023-11-12 02:34:00,375 INFO L175 Difference]: Start difference. First operand has 19 places, 8 transitions, 29 flow. Second operand 3 states and 208 transitions. [2023-11-12 02:34:00,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 7 transitions, 37 flow [2023-11-12 02:34:00,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 29 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:34:00,376 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2023-11-12 02:34:00,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2023-11-12 02:34:00,377 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -6 predicate places. [2023-11-12 02:34:00,377 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2023-11-12 02:34:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:00,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-12 02:34:00,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-12 02:34:00,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-12 02:34:00,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-12 02:34:00,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-11-12 02:34:00,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-11-12 02:34:00,382 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-12 02:34:00,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-12 02:34:00,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2023-11-12 02:34:00,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-11-12 02:34:00,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:34:00,384 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:00,389 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:34:00,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:34:00,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:34:00 BasicIcfg [2023-11-12 02:34:00,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:34:00,395 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:34:00,395 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:34:00,395 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:34:00,396 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:52" (3/4) ... [2023-11-12 02:34:00,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:34:00,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-12 02:34:00,406 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-12 02:34:00,407 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:34:00,407 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:34:00,486 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:34:00,486 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:34:00,487 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:34:00,487 INFO L158 Benchmark]: Toolchain (without parser) took 9148.71ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 136.1MB in the beginning and 125.8MB in the end (delta: 10.3MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2023-11-12 02:34:00,488 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:34:00,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 763.50ms. Allocated memory is still 184.5MB. Free memory was 135.4MB in the beginning and 108.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 02:34:00,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.32ms. Allocated memory is still 184.5MB. Free memory was 108.1MB in the beginning and 106.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:34:00,489 INFO L158 Benchmark]: Boogie Preprocessor took 40.80ms. Allocated memory is still 184.5MB. Free memory was 106.1MB in the beginning and 104.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:34:00,490 INFO L158 Benchmark]: RCFGBuilder took 417.29ms. Allocated memory is still 184.5MB. Free memory was 104.6MB in the beginning and 90.7MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:34:00,490 INFO L158 Benchmark]: TraceAbstraction took 7764.83ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 90.0MB in the beginning and 129.9MB in the end (delta: -40.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:34:00,490 INFO L158 Benchmark]: Witness Printer took 92.02ms. Allocated memory is still 222.3MB. Free memory was 129.9MB in the beginning and 125.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:34:00,493 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 763.50ms. Allocated memory is still 184.5MB. Free memory was 135.4MB in the beginning and 108.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.32ms. Allocated memory is still 184.5MB. Free memory was 108.1MB in the beginning and 106.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.80ms. Allocated memory is still 184.5MB. Free memory was 106.1MB in the beginning and 104.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.29ms. Allocated memory is still 184.5MB. Free memory was 104.6MB in the beginning and 90.7MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7764.83ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 90.0MB in the beginning and 129.9MB in the end (delta: -40.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 92.02ms. Allocated memory is still 222.3MB. Free memory was 129.9MB in the beginning and 125.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 77 PlacesBefore, 20 PlacesAfterwards, 74 TransitionsBefore, 16 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 888 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 470, independent: 384, independent conditional: 0, independent unconditional: 384, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 213, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 470, independent: 186, independent conditional: 0, independent unconditional: 186, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 213, unknown conditional: 0, unknown unconditional: 213] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1001]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 86 locations, 10 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: 7.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 401 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 50 mSDtfsCounter, 401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:34:00,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbdb8920-0b26-4a20-bfce-79a65ca470c5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE