./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:17,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:17,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:03:17,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:17,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:17,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:17,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:17,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:17,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:17,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:17,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:17,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:17,550 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:17,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:17,553 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:17,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:17,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:17,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:17,554 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:03:17,555 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:03:17,555 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:03:17,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:17,556 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:03:17,557 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:17,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:17,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:17,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:17,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:17,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:17,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:17,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:17,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:17,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:17,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:17,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:17,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:17,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:17,563 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:17,563 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_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2023-11-19 08:03:17,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:17,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:17,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:17,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:17,921 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:17,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2023-11-19 08:03:21,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:21,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:21,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2023-11-19 08:03:21,358 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/data/38aba9666/a9f6e233daf34502b549a236cbe2f6f2/FLAG4ba40666c [2023-11-19 08:03:21,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/data/38aba9666/a9f6e233daf34502b549a236cbe2f6f2 [2023-11-19 08:03:21,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:21,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:21,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:21,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:21,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:21,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:21,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbeded2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21, skipping insertion in model container [2023-11-19 08:03:21,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:21,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:21,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:21,932 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:22,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:22,106 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:22,114 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:22,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22 WrapperNode [2023-11-19 08:03:22,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:22,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:22,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:22,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:22,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,195 INFO L138 Inliner]: procedures = 271, calls = 46, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 110 [2023-11-19 08:03:22,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:22,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:22,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:22,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:22,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:22,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:22,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:22,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:22,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (1/1) ... [2023-11-19 08:03:22,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:22,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:22,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:22,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab012d7-2d2f-4a80-bba7-9b4c81e67f9c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-19 08:03:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2023-11-19 08:03:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2023-11-19 08:03:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:03:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2023-11-19 08:03:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2023-11-19 08:03:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure process [2023-11-19 08:03:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2023-11-19 08:03:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:22,393 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:03:22,678 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:22,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:22,972 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:22,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:22,984 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:03:22,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:22 BoogieIcfgContainer [2023-11-19 08:03:22,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:22,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:22,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:22,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:22,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:21" (1/3) ... [2023-11-19 08:03:22,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b074645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:22, skipping insertion in model container [2023-11-19 08:03:22,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:22" (2/3) ... [2023-11-19 08:03:22,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b074645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:22, skipping insertion in model container [2023-11-19 08:03:22,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:22" (3/3) ... [2023-11-19 08:03:22,999 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2023-11-19 08:03:23,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:23,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-19 08:03:23,017 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:23,095 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:03:23,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 175 transitions, 362 flow [2023-11-19 08:03:23,224 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-19 08:03:23,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 172 events. 14/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 407 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-19 08:03:23,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 175 transitions, 362 flow [2023-11-19 08:03:23,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 172 transitions, 353 flow [2023-11-19 08:03:23,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:23,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 172 transitions, 353 flow [2023-11-19 08:03:23,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 172 transitions, 353 flow [2023-11-19 08:03:23,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 172 transitions, 353 flow [2023-11-19 08:03:23,307 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-19 08:03:23,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:23,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 172 events. 14/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-19 08:03:23,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 11610 [2023-11-19 08:03:28,989 INFO L134 LiptonReduction]: Checked pairs total: 26928 [2023-11-19 08:03:28,989 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-19 08:03:29,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:29,026 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;@53bc7b3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:29,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 08:03:29,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:29,029 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:03:29,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:29,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:29,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:03:29,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:29,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash 685, now seen corresponding path program 1 times [2023-11-19 08:03:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:29,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835762230] [2023-11-19 08:03:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:29,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835762230] [2023-11-19 08:03:29,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835762230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:29,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:29,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:03:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288155293] [2023-11-19 08:03:29,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:03:29,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:03:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:03:29,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 343 [2023-11-19 08:03:29,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:29,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:29,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 343 [2023-11-19 08:03:29,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:30,948 INFO L124 PetriNetUnfolderBase]: 10225/14002 cut-off events. [2023-11-19 08:03:30,948 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-19 08:03:30,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27561 conditions, 14002 events. 10225/14002 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 69467 event pairs, 7641 based on Foata normal form. 0/10903 useless extension candidates. Maximal degree in co-relation 27550. Up to 13443 conditions per place. [2023-11-19 08:03:31,114 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 42 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-19 08:03:31,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 189 flow [2023-11-19 08:03:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:03:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:03:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 368 transitions. [2023-11-19 08:03:31,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2023-11-19 08:03:31,133 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 368 transitions. [2023-11-19 08:03:31,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 368 transitions. [2023-11-19 08:03:31,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:31,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 368 transitions. [2023-11-19 08:03:31,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:31,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:31,152 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:31,154 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 121 flow. Second operand 2 states and 368 transitions. [2023-11-19 08:03:31,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 189 flow [2023-11-19 08:03:31,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:03:31,163 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 102 flow [2023-11-19 08:03:31,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-11-19 08:03:31,170 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-19 08:03:31,171 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 102 flow [2023-11-19 08:03:31,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:31,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:31,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:03:31,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:31,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:31,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 674967, now seen corresponding path program 1 times [2023-11-19 08:03:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164529465] [2023-11-19 08:03:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164529465] [2023-11-19 08:03:31,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164529465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:31,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:31,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887752729] [2023-11-19 08:03:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:31,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 343 [2023-11-19 08:03:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:31,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:31,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 343 [2023-11-19 08:03:31,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:33,198 INFO L124 PetriNetUnfolderBase]: 10220/13871 cut-off events. [2023-11-19 08:03:33,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:33,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27418 conditions, 13871 events. 10220/13871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 68487 event pairs, 6117 based on Foata normal form. 0/10728 useless extension candidates. Maximal degree in co-relation 27415. Up to 10872 conditions per place. [2023-11-19 08:03:33,319 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 60 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-19 08:03:33,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 270 flow [2023-11-19 08:03:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-11-19 08:03:33,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024295432458697 [2023-11-19 08:03:33,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-11-19 08:03:33,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-11-19 08:03:33,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:33,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-11-19 08:03:33,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:33,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:33,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:33,335 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 102 flow. Second operand 3 states and 517 transitions. [2023-11-19 08:03:33,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 270 flow [2023-11-19 08:03:33,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:03:33,339 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 106 flow [2023-11-19 08:03:33,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-19 08:03:33,340 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-19 08:03:33,341 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 106 flow [2023-11-19 08:03:33,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:33,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:33,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:03:33,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:03:33,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:33,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash 674968, now seen corresponding path program 1 times [2023-11-19 08:03:33,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:33,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777939903] [2023-11-19 08:03:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:33,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:33,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777939903] [2023-11-19 08:03:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777939903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:33,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:33,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249291698] [2023-11-19 08:03:33,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:33,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:33,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 343 [2023-11-19 08:03:33,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:33,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:33,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 343 [2023-11-19 08:03:33,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:35,024 INFO L124 PetriNetUnfolderBase]: 10215/13860 cut-off events. [2023-11-19 08:03:35,024 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-19 08:03:35,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27999 conditions, 13860 events. 10215/13860 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68501 event pairs, 6113 based on Foata normal form. 0/11023 useless extension candidates. Maximal degree in co-relation 27995. Up to 10862 conditions per place. [2023-11-19 08:03:35,140 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 59 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-19 08:03:35,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 272 flow [2023-11-19 08:03:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-11-19 08:03:35,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2023-11-19 08:03:35,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-11-19 08:03:35,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-11-19 08:03:35,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:35,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-11-19 08:03:35,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:35,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:35,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:35,152 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 106 flow. Second operand 3 states and 528 transitions. [2023-11-19 08:03:35,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 272 flow [2023-11-19 08:03:35,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:35,163 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 104 flow [2023-11-19 08:03:35,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-19 08:03:35,164 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-19 08:03:35,164 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 104 flow [2023-11-19 08:03:35,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:35,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:35,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:03:35,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:03:35,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:35,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash 648657989, now seen corresponding path program 1 times [2023-11-19 08:03:35,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:35,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146769501] [2023-11-19 08:03:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146769501] [2023-11-19 08:03:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146769501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:35,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:35,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:35,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718617136] [2023-11-19 08:03:35,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:35,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:35,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 343 [2023-11-19 08:03:35,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:35,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:35,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 343 [2023-11-19 08:03:35,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:36,813 INFO L124 PetriNetUnfolderBase]: 10114/13694 cut-off events. [2023-11-19 08:03:36,813 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-19 08:03:36,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27682 conditions, 13694 events. 10114/13694 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67260 event pairs, 6032 based on Foata normal form. 0/10924 useless extension candidates. Maximal degree in co-relation 27678. Up to 10711 conditions per place. [2023-11-19 08:03:36,929 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 58 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-11-19 08:03:36,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 268 flow [2023-11-19 08:03:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-11-19 08:03:36,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121477162293488 [2023-11-19 08:03:36,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-11-19 08:03:36,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-11-19 08:03:36,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:36,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-11-19 08:03:36,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:36,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:36,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:36,941 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 104 flow. Second operand 3 states and 527 transitions. [2023-11-19 08:03:36,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 268 flow [2023-11-19 08:03:36,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:36,951 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 102 flow [2023-11-19 08:03:36,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-19 08:03:36,952 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-19 08:03:36,952 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 102 flow [2023-11-19 08:03:36,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:36,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:36,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:03:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:03:36,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:36,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 648657988, now seen corresponding path program 1 times [2023-11-19 08:03:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:36,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691907069] [2023-11-19 08:03:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:37,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691907069] [2023-11-19 08:03:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691907069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:37,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:37,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466145369] [2023-11-19 08:03:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:37,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:37,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:37,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:37,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 343 [2023-11-19 08:03:37,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:37,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:37,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 343 [2023-11-19 08:03:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:38,273 INFO L124 PetriNetUnfolderBase]: 10013/13528 cut-off events. [2023-11-19 08:03:38,273 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-19 08:03:38,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27365 conditions, 13528 events. 10013/13528 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66177 event pairs, 5951 based on Foata normal form. 0/10825 useless extension candidates. Maximal degree in co-relation 27361. Up to 10560 conditions per place. [2023-11-19 08:03:38,371 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 57 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-19 08:03:38,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 264 flow [2023-11-19 08:03:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-11-19 08:03:38,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49951409135082603 [2023-11-19 08:03:38,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-11-19 08:03:38,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-11-19 08:03:38,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:38,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-11-19 08:03:38,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:38,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:38,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:38,381 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 102 flow. Second operand 3 states and 514 transitions. [2023-11-19 08:03:38,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 264 flow [2023-11-19 08:03:38,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:38,390 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 100 flow [2023-11-19 08:03:38,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-19 08:03:38,391 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -10 predicate places. [2023-11-19 08:03:38,391 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 100 flow [2023-11-19 08:03:38,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:38,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:38,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:38,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:03:38,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1112803721, now seen corresponding path program 1 times [2023-11-19 08:03:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365982045] [2023-11-19 08:03:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:38,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:38,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365982045] [2023-11-19 08:03:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365982045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:38,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:38,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786588007] [2023-11-19 08:03:38,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:38,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:38,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 343 [2023-11-19 08:03:38,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:38,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:38,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 343 [2023-11-19 08:03:38,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:40,203 INFO L124 PetriNetUnfolderBase]: 16873/22278 cut-off events. [2023-11-19 08:03:40,203 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-19 08:03:40,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45075 conditions, 22278 events. 16873/22278 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 110869 event pairs, 7471 based on Foata normal form. 300/18230 useless extension candidates. Maximal degree in co-relation 45071. Up to 13121 conditions per place. [2023-11-19 08:03:40,570 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 65 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-19 08:03:40,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 292 flow [2023-11-19 08:03:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-11-19 08:03:40,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2023-11-19 08:03:40,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-11-19 08:03:40,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-11-19 08:03:40,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:40,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-11-19 08:03:40,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:40,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:40,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:40,580 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 100 flow. Second operand 3 states and 531 transitions. [2023-11-19 08:03:40,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 292 flow [2023-11-19 08:03:40,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:40,650 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 108 flow [2023-11-19 08:03:40,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-19 08:03:40,652 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-19 08:03:40,652 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 108 flow [2023-11-19 08:03:40,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:40,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:40,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:40,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:03:40,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:40,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash -42603552, now seen corresponding path program 1 times [2023-11-19 08:03:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643004231] [2023-11-19 08:03:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:41,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:41,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643004231] [2023-11-19 08:03:41,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643004231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:41,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:41,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:41,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390410934] [2023-11-19 08:03:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:41,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 343 [2023-11-19 08:03:41,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:41,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:41,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 343 [2023-11-19 08:03:41,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:45,104 INFO L124 PetriNetUnfolderBase]: 38093/50702 cut-off events. [2023-11-19 08:03:45,104 INFO L125 PetriNetUnfolderBase]: For 2756/2756 co-relation queries the response was YES. [2023-11-19 08:03:45,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105215 conditions, 50702 events. 38093/50702 cut-off events. For 2756/2756 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 282685 event pairs, 10820 based on Foata normal form. 0/42083 useless extension candidates. Maximal degree in co-relation 105210. Up to 30016 conditions per place. [2023-11-19 08:03:45,456 INFO L140 encePairwiseOnDemand]: 334/343 looper letters, 71 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2023-11-19 08:03:45,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 83 transitions, 358 flow [2023-11-19 08:03:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-11-19 08:03:45,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2023-11-19 08:03:45,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-11-19 08:03:45,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-11-19 08:03:45,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:45,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-11-19 08:03:45,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,474 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 108 flow. Second operand 3 states and 534 transitions. [2023-11-19 08:03:45,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 83 transitions, 358 flow [2023-11-19 08:03:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:03:45,485 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 168 flow [2023-11-19 08:03:45,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2023-11-19 08:03:45,487 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-11-19 08:03:45,488 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 168 flow [2023-11-19 08:03:45,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:45,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:45,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:03:45,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:45,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1386240654, now seen corresponding path program 1 times [2023-11-19 08:03:45,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:45,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372263631] [2023-11-19 08:03:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:45,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:45,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:45,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372263631] [2023-11-19 08:03:45,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372263631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:45,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:45,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207214303] [2023-11-19 08:03:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:45,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:45,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 343 [2023-11-19 08:03:45,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:45,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 343 [2023-11-19 08:03:45,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:55,063 INFO L124 PetriNetUnfolderBase]: 87501/118744 cut-off events. [2023-11-19 08:03:55,064 INFO L125 PetriNetUnfolderBase]: For 31242/31341 co-relation queries the response was YES. [2023-11-19 08:03:55,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272683 conditions, 118744 events. 87501/118744 cut-off events. For 31242/31341 co-relation queries the response was YES. Maximal size of possible extension queue 2115. Compared 727615 event pairs, 20621 based on Foata normal form. 1/102418 useless extension candidates. Maximal degree in co-relation 272677. Up to 46870 conditions per place. [2023-11-19 08:03:56,075 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 134 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2023-11-19 08:03:56,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 149 transitions, 750 flow [2023-11-19 08:03:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:03:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 896 transitions. [2023-11-19 08:03:56,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2023-11-19 08:03:56,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 896 transitions. [2023-11-19 08:03:56,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 896 transitions. [2023-11-19 08:03:56,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:56,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 896 transitions. [2023-11-19 08:03:56,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:56,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 343.0) internal successors, (2058), 6 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:56,090 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 343.0) internal successors, (2058), 6 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:56,091 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 168 flow. Second operand 5 states and 896 transitions. [2023-11-19 08:03:56,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 149 transitions, 750 flow [2023-11-19 08:03:56,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 149 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:56,192 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 228 flow [2023-11-19 08:03:56,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-11-19 08:03:56,193 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-11-19 08:03:56,193 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 228 flow [2023-11-19 08:03:56,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:56,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:56,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:03:56,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 08:03:56,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2022995406, now seen corresponding path program 1 times [2023-11-19 08:03:56,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:56,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349972460] [2023-11-19 08:03:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:56,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349972460] [2023-11-19 08:03:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349972460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:56,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:03:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537143952] [2023-11-19 08:03:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:56,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:56,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:56,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:56,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 343 [2023-11-19 08:03:56,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:56,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:56,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 343 [2023-11-19 08:03:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:07,378 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][75], [37#L1210true, Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, Black: 198#true, 108#L1173true, 215#true, processThread1of1ForFork0InUse, 174#true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-19 08:04:07,378 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][68], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, Black: 198#true, 108#L1173true, processThread1of1ForFork0InUse, 174#true, 217#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), Black: 206#(= 5 ~B~0), 74#L19-5true, 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-19 08:04:07,379 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-19 08:04:07,379 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 08:04:08,913 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][75], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, 108#L1173true, Black: 198#true, 215#true, processThread1of1ForFork0InUse, 174#true, 17#L1205-6true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-19 08:04:08,913 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-11-19 08:04:08,914 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-19 08:04:08,914 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 08:04:08,914 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event