./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:11,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:11,942 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:54:11,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:11,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:11,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:11,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:11,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:11,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:11,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:11,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:11,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:11,978 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:11,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:11,979 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:54:11,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:54:11,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:54:11,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:11,982 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:54:11,982 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:54:11,983 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:54:11,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:11,984 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:54:11,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:54:11,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:54:11,986 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:11,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:11,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:11,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:11,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:11,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:11,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:11,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:54:11,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:54:11,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:11,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:11,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:11,991 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:11,992 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_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2023-11-06 21:54:12,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:12,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:12,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:12,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:12,310 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:12,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-06 21:54:15,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:54:15,709 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:54:15,710 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-06 21:54:15,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/data/c01f4c301/bc100260f7424e2cbd9c342858f59f5d/FLAG4fb3fa223 [2023-11-06 21:54:15,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/data/c01f4c301/bc100260f7424e2cbd9c342858f59f5d [2023-11-06 21:54:15,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:54:15,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:54:15,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:15,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:54:15,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:54:15,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:15" (1/1) ... [2023-11-06 21:54:15,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60702f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:15, skipping insertion in model container [2023-11-06 21:54:15,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:15" (1/1) ... [2023-11-06 21:54:15,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:15,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:15,973 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:15,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:16,012 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:16,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16 WrapperNode [2023-11-06 21:54:16,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:16,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:16,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:16,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:16,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,080 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 127 [2023-11-06 21:54:16,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:16,082 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:16,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:16,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:16,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:16,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:16,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:16,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:16,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (1/1) ... [2023-11-06 21:54:16,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:16,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:16,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:54:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:54:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:54:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:54:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:54:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:54:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:54:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:54:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:54:16,212 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:54:16,357 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:16,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:16,703 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:16,714 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:16,714 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:54:16,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:16 BoogieIcfgContainer [2023-11-06 21:54:16,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:16,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:16,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:16,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:16,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:54:15" (1/3) ... [2023-11-06 21:54:16,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ade51bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:16, skipping insertion in model container [2023-11-06 21:54:16,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:16" (2/3) ... [2023-11-06 21:54:16,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ade51bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:16, skipping insertion in model container [2023-11-06 21:54:16,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:16" (3/3) ... [2023-11-06 21:54:16,728 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2023-11-06 21:54:16,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:16,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 21:54:16,747 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:54:16,874 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:54:16,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 181 transitions, 376 flow [2023-11-06 21:54:17,013 INFO L124 PetriNetUnfolderBase]: 11/179 cut-off events. [2023-11-06 21:54:17,013 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:54:17,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 179 events. 11/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 285 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-11-06 21:54:17,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 181 transitions, 376 flow [2023-11-06 21:54:17,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 174 transitions, 360 flow [2023-11-06 21:54:17,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:17,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 174 transitions, 360 flow [2023-11-06 21:54:17,054 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 174 transitions, 360 flow [2023-11-06 21:54:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 174 transitions, 360 flow [2023-11-06 21:54:17,113 INFO L124 PetriNetUnfolderBase]: 11/174 cut-off events. [2023-11-06 21:54:17,113 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:54:17,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 11/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-11-06 21:54:17,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 5040 [2023-11-06 21:54:23,545 INFO L134 LiptonReduction]: Checked pairs total: 4792 [2023-11-06 21:54:23,545 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-11-06 21:54:23,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:23,584 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;@3af62097, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:23,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 21:54:23,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:23,587 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 21:54:23,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:23,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:23,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:54:23,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:23,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash 736, now seen corresponding path program 1 times [2023-11-06 21:54:23,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:23,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19707367] [2023-11-06 21:54:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:23,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:23,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:23,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19707367] [2023-11-06 21:54:23,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19707367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:23,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:23,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:54:23,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587808185] [2023-11-06 21:54:23,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:54:23,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:23,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:54:23,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:54:23,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 401 [2023-11-06 21:54:23,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 169.5) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:23,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 401 [2023-11-06 21:54:23,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:23,896 INFO L124 PetriNetUnfolderBase]: 21/56 cut-off events. [2023-11-06 21:54:23,897 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 21:54:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 56 events. 21/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 123 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 84. Up to 57 conditions per place. [2023-11-06 21:54:23,899 INFO L140 encePairwiseOnDemand]: 398/401 looper letters, 17 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-11-06 21:54:23,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 80 flow [2023-11-06 21:54:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:54:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:54:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 358 transitions. [2023-11-06 21:54:23,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463840399002494 [2023-11-06 21:54:23,925 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 358 transitions. [2023-11-06 21:54:23,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 358 transitions. [2023-11-06 21:54:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:23,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 358 transitions. [2023-11-06 21:54:23,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 401.0) internal successors, (1203), 3 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,948 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 401.0) internal successors, (1203), 3 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,950 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 52 flow. Second operand 2 states and 358 transitions. [2023-11-06 21:54:23,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 80 flow [2023-11-06 21:54:23,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:54:23,956 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 38 flow [2023-11-06 21:54:23,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-11-06 21:54:23,963 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-11-06 21:54:23,964 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 38 flow [2023-11-06 21:54:23,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.5) internal successors, (339), 2 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:23,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:54:23,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:23,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:23,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 724099, now seen corresponding path program 1 times [2023-11-06 21:54:23,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:23,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237995059] [2023-11-06 21:54:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:24,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237995059] [2023-11-06 21:54:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237995059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:54:24,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951884580] [2023-11-06 21:54:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:24,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:24,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:24,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 401 [2023-11-06 21:54:24,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:24,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 401 [2023-11-06 21:54:24,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,339 INFO L124 PetriNetUnfolderBase]: 19/50 cut-off events. [2023-11-06 21:54:24,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 50 events. 19/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 105 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 103. Up to 50 conditions per place. [2023-11-06 21:54:24,342 INFO L140 encePairwiseOnDemand]: 398/401 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-06 21:54:24,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 64 flow [2023-11-06 21:54:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-11-06 21:54:24,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42061512884455526 [2023-11-06 21:54:24,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-11-06 21:54:24,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-11-06 21:54:24,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-11-06 21:54:24,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,357 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 38 flow. Second operand 3 states and 506 transitions. [2023-11-06 21:54:24,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 64 flow [2023-11-06 21:54:24,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:24,359 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 36 flow [2023-11-06 21:54:24,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-06 21:54:24,361 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-11-06 21:54:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 36 flow [2023-11-06 21:54:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:54:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:24,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:24,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 724098, now seen corresponding path program 1 times [2023-11-06 21:54:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731515979] [2023-11-06 21:54:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731515979] [2023-11-06 21:54:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731515979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:54:24,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49380665] [2023-11-06 21:54:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:24,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 401 [2023-11-06 21:54:24,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:24,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 401 [2023-11-06 21:54:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,543 INFO L124 PetriNetUnfolderBase]: 17/44 cut-off events. [2023-11-06 21:54:24,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:24,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 44 events. 17/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 91 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 92. Up to 44 conditions per place. [2023-11-06 21:54:24,544 INFO L140 encePairwiseOnDemand]: 398/401 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-11-06 21:54:24,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 58 flow [2023-11-06 21:54:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-06 21:54:24,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089775561097257 [2023-11-06 21:54:24,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-06 21:54:24,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-06 21:54:24,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-06 21:54:24,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,555 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 36 flow. Second operand 3 states and 492 transitions. [2023-11-06 21:54:24,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 58 flow [2023-11-06 21:54:24,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:24,557 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 33 flow [2023-11-06 21:54:24,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=33, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-06 21:54:24,558 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 21:54:24,558 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 33 flow [2023-11-06 21:54:24,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:54:24,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:54:24,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:24,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash 695872928, now seen corresponding path program 1 times [2023-11-06 21:54:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844859248] [2023-11-06 21:54:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844859248] [2023-11-06 21:54:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844859248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:24,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191317657] [2023-11-06 21:54:24,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:24,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:24,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:24,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 401 [2023-11-06 21:54:24,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:24,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 401 [2023-11-06 21:54:24,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,850 INFO L124 PetriNetUnfolderBase]: 13/36 cut-off events. [2023-11-06 21:54:24,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 36 events. 13/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 77. Up to 36 conditions per place. [2023-11-06 21:54:24,852 INFO L140 encePairwiseOnDemand]: 399/401 looper letters, 11 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-11-06 21:54:24,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 55 flow [2023-11-06 21:54:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-11-06 21:54:24,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39733998337489607 [2023-11-06 21:54:24,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-11-06 21:54:24,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-11-06 21:54:24,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-11-06 21:54:24,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,864 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 33 flow. Second operand 3 states and 478 transitions. [2023-11-06 21:54:24,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 55 flow [2023-11-06 21:54:24,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:24,866 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 32 flow [2023-11-06 21:54:24,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-11-06 21:54:24,868 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 21:54:24,868 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 32 flow [2023-11-06 21:54:24,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.25) internal successors, (625), 4 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:54:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:24,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:24,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 695872929, now seen corresponding path program 1 times [2023-11-06 21:54:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717254580] [2023-11-06 21:54:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:24,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717254580] [2023-11-06 21:54:24,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717254580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:54:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311497331] [2023-11-06 21:54:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:25,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 401 [2023-11-06 21:54:25,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 401 [2023-11-06 21:54:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:25,053 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-11-06 21:54:25,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:25,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 28 events. 9/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 62. Up to 28 conditions per place. [2023-11-06 21:54:25,056 INFO L140 encePairwiseOnDemand]: 399/401 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-06 21:54:25,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 52 flow [2023-11-06 21:54:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-06 21:54:25,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089775561097257 [2023-11-06 21:54:25,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-06 21:54:25,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-06 21:54:25,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:25,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-06 21:54:25,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,067 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 32 flow. Second operand 3 states and 492 transitions. [2023-11-06 21:54:25,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 52 flow [2023-11-06 21:54:25,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 51 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:25,068 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 31 flow [2023-11-06 21:54:25,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-11-06 21:54:25,069 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 21:54:25,069 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 31 flow [2023-11-06 21:54:25,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:25,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:25,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:54:25,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:25,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 441627043, now seen corresponding path program 1 times [2023-11-06 21:54:25,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:25,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107140322] [2023-11-06 21:54:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107140322] [2023-11-06 21:54:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107140322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843568680] [2023-11-06 21:54:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:25,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:25,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 401 [2023-11-06 21:54:26,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:26,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 401 [2023-11-06 21:54:26,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:26,120 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-11-06 21:54:26,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:54:26,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 32 events. 8/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 71. Up to 16 conditions per place. [2023-11-06 21:54:26,121 INFO L140 encePairwiseOnDemand]: 397/401 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions. [2023-11-06 21:54:26,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 96 flow [2023-11-06 21:54:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:54:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2023-11-06 21:54:26,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024937655860349 [2023-11-06 21:54:26,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2023-11-06 21:54:26,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2023-11-06 21:54:26,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:26,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2023-11-06 21:54:26,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,140 INFO L175 Difference]: Start difference. First operand has 20 places, 11 transitions, 31 flow. Second operand 5 states and 807 transitions. [2023-11-06 21:54:26,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 96 flow [2023-11-06 21:54:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:26,142 INFO L231 Difference]: Finished difference. Result has 24 places, 11 transitions, 38 flow [2023-11-06 21:54:26,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2023-11-06 21:54:26,143 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-11-06 21:54:26,143 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 38 flow [2023-11-06 21:54:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:26,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:26,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:26,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:54:26,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2130627389, now seen corresponding path program 2 times [2023-11-06 21:54:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:26,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001887897] [2023-11-06 21:54:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001887897] [2023-11-06 21:54:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001887897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:26,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:26,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427322988] [2023-11-06 21:54:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:26,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:26,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 401 [2023-11-06 21:54:26,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:26,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 401 [2023-11-06 21:54:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:26,802 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-06 21:54:26,802 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:54:26,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2023-11-06 21:54:26,802 INFO L140 encePairwiseOnDemand]: 397/401 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-11-06 21:54:26,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 12 transitions, 62 flow [2023-11-06 21:54:26,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:54:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2023-11-06 21:54:26,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980049875311721 [2023-11-06 21:54:26,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2023-11-06 21:54:26,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2023-11-06 21:54:26,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:26,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2023-11-06 21:54:26,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,817 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,817 INFO L175 Difference]: Start difference. First operand has 24 places, 11 transitions, 38 flow. Second operand 5 states and 798 transitions. [2023-11-06 21:54:26,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 12 transitions, 62 flow [2023-11-06 21:54:26,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 12 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:26,818 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-11-06 21:54:26,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-11-06 21:54:26,819 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-11-06 21:54:26,819 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-11-06 21:54:26,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-06 21:54:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-06 21:54:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-06 21:54:26,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-06 21:54:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-06 21:54:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-06 21:54:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-06 21:54:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-06 21:54:26,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-06 21:54:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-06 21:54:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-06 21:54:26,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-06 21:54:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:26,826 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-06 21:54:26,829 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:54:26,829 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:54:26,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:54:26 BasicIcfg [2023-11-06 21:54:26,834 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:54:26,835 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:54:26,835 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:54:26,835 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:54:26,835 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:16" (3/4) ... [2023-11-06 21:54:26,838 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:54:26,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 21:54:26,843 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 21:54:26,848 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-06 21:54:26,849 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:54:26,849 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:54:26,849 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:54:26,907 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:54:26,907 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:54:26,907 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:54:26,908 INFO L158 Benchmark]: Toolchain (without parser) took 11169.22ms. Allocated memory was 144.7MB in the beginning and 209.7MB in the end (delta: 65.0MB). Free memory was 118.9MB in the beginning and 168.9MB in the end (delta: -50.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-11-06 21:54:26,908 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 96.5MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:54:26,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.85ms. Allocated memory is still 144.7MB. Free memory was 118.7MB in the beginning and 109.0MB in the end (delta: 9.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-11-06 21:54:26,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.64ms. Allocated memory is still 144.7MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:54:26,909 INFO L158 Benchmark]: Boogie Preprocessor took 30.33ms. Allocated memory is still 144.7MB. Free memory was 106.9MB in the beginning and 106.0MB in the end (delta: 899.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:54:26,910 INFO L158 Benchmark]: RCFGBuilder took 604.46ms. Allocated memory is still 144.7MB. Free memory was 106.0MB in the beginning and 88.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 21:54:26,910 INFO L158 Benchmark]: TraceAbstraction took 10113.46ms. Allocated memory was 144.7MB in the beginning and 209.7MB in the end (delta: 65.0MB). Free memory was 88.0MB in the beginning and 172.0MB in the end (delta: -84.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:54:26,910 INFO L158 Benchmark]: Witness Printer took 72.83ms. Allocated memory is still 209.7MB. Free memory was 172.0MB in the beginning and 168.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:54:26,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 96.5MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.85ms. Allocated memory is still 144.7MB. Free memory was 118.7MB in the beginning and 109.0MB in the end (delta: 9.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.64ms. Allocated memory is still 144.7MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.33ms. Allocated memory is still 144.7MB. Free memory was 106.9MB in the beginning and 106.0MB in the end (delta: 899.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 604.46ms. Allocated memory is still 144.7MB. Free memory was 106.0MB in the beginning and 88.0MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10113.46ms. Allocated memory was 144.7MB in the beginning and 209.7MB in the end (delta: 65.0MB). Free memory was 88.0MB in the beginning and 172.0MB in the end (delta: -84.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.83ms. Allocated memory is still 209.7MB. Free memory was 172.0MB in the beginning and 168.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 170 PlacesBefore, 27 PlacesAfterwards, 174 TransitionsBefore, 20 TransitionsAfterwards, 5040 CoEnabledTransitionPairs, 7 FixpointIterations, 82 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 33 ConcurrentYvCompositions, 11 ChoiceCompositions, 220 TotalNumberOfCompositions, 4792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4792, independent: 4792, independent conditional: 0, independent unconditional: 4792, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3013, independent: 3013, independent conditional: 0, independent unconditional: 3013, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4792, independent: 1779, independent conditional: 0, independent unconditional: 1779, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3013, unknown conditional: 0, unknown unconditional: 3013] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 54]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 247 locations, 12 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: 9.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 410 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 410 IncrementalHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 44 mSDtfsCounter, 410 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 1.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 501 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:54:26,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6bc1f74-d3ed-4918-a267-380ca8481323/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE