./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ --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 86fd3f5568a14080e9383b358193a040777497b13f7355a03ef8d73bf4678822 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:33:44,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:33:44,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:33:44,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:33:44,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:33:44,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:33:44,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:33:44,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:33:44,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:33:44,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:33:44,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:33:44,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:33:44,383 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:33:44,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:33:44,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:33:44,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:33:44,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:33:44,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:33:44,386 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:33:44,387 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:33:44,387 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:33:44,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:33:44,389 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:33:44,390 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:33:44,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:33:44,391 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:33:44,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:33:44,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:33:44,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:33:44,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:33:44,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:44,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:33:44,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:33:44,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:33:44,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:33:44,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:33:44,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:33:44,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:33:44,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:33:44,399 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_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86fd3f5568a14080e9383b358193a040777497b13f7355a03ef8d73bf4678822 [2023-11-23 21:33:44,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:33:44,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:33:44,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:33:44,792 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:33:44,793 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:33:44,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2023-11-23 21:33:47,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:33:48,224 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:33:48,225 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/sv-benchmarks/c/weaver/chl-sre-trans.wvr.c [2023-11-23 21:33:48,233 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/data/cefd6aa8f/655af7eb3e8a4dd2bcb950dbd0c58aba/FLAG200663285 [2023-11-23 21:33:48,250 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/data/cefd6aa8f/655af7eb3e8a4dd2bcb950dbd0c58aba [2023-11-23 21:33:48,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:33:48,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:33:48,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:48,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:33:48,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:33:48,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5643da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48, skipping insertion in model container [2023-11-23 21:33:48,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:48,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:48,501 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:33:48,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:48,543 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:33:48,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48 WrapperNode [2023-11-23 21:33:48,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:48,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:48,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:33:48,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:33:48,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,587 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-23 21:33:48,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:48,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:33:48,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:33:48,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:33:48,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:33:48,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:33:48,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:33:48,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:33:48,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (1/1) ... [2023-11-23 21:33:48,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:48,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:48,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:33:48,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:33:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:33:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:33:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:33:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:33:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:33:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:33:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:33:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:33:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:33:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:33:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:33:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:33:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:33:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:33:48,709 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:33:48,823 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:33:48,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:33:49,095 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:33:49,412 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:33:49,413 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:33:49,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:49 BoogieIcfgContainer [2023-11-23 21:33:49,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:33:49,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:33:49,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:33:49,421 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:33:49,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:33:48" (1/3) ... [2023-11-23 21:33:49,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bf84b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:49, skipping insertion in model container [2023-11-23 21:33:49,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:48" (2/3) ... [2023-11-23 21:33:49,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bf84b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:49, skipping insertion in model container [2023-11-23 21:33:49,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:49" (3/3) ... [2023-11-23 21:33:49,427 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2023-11-23 21:33:49,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:33:49,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-23 21:33:49,453 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:33:49,541 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:33:49,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 103 flow [2023-11-23 21:33:49,625 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-11-23 21:33:49,626 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:33:49,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-23 21:33:49,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 103 flow [2023-11-23 21:33:49,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 37 transitions, 92 flow [2023-11-23 21:33:49,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:33:49,654 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;@25c73543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:33:49,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-23 21:33:49,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:33:49,659 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 21:33:49,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:33:49,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:49,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 21:33:49,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:49,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:49,668 INFO L85 PathProgramCache]: Analyzing trace with hash 7566, now seen corresponding path program 1 times [2023-11-23 21:33:49,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:49,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105717318] [2023-11-23 21:33:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:50,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105717318] [2023-11-23 21:33:50,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105717318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:50,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:50,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297881007] [2023-11-23 21:33:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:50,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:50,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-23 21:33:50,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:50,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-23 21:33:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:50,283 INFO L124 PetriNetUnfolderBase]: 44/139 cut-off events. [2023-11-23 21:33:50,284 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-23 21:33:50,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 139 events. 44/139 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 423 event pairs, 44 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 200. Up to 90 conditions per place. [2023-11-23 21:33:50,290 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-23 21:33:50,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 116 flow [2023-11-23 21:33:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2023-11-23 21:33:50,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-23 21:33:50,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2023-11-23 21:33:50,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2023-11-23 21:33:50,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:50,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2023-11-23 21:33:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,319 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 92 flow. Second operand 3 states and 82 transitions. [2023-11-23 21:33:50,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 116 flow [2023-11-23 21:33:50,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 104 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 21:33:50,326 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 74 flow [2023-11-23 21:33:50,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-23 21:33:50,333 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2023-11-23 21:33:50,333 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 74 flow [2023-11-23 21:33:50,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:50,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 21:33:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:33:50,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:50,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:50,336 INFO L85 PathProgramCache]: Analyzing trace with hash 7567, now seen corresponding path program 1 times [2023-11-23 21:33:50,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:50,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065158629] [2023-11-23 21:33:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:50,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065158629] [2023-11-23 21:33:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065158629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:50,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176560005] [2023-11-23 21:33:50,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:50,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:50,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:50,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-23 21:33:50,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:50,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-23 21:33:50,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:50,740 INFO L124 PetriNetUnfolderBase]: 32/118 cut-off events. [2023-11-23 21:33:50,740 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 21:33:50,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 118 events. 32/118 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 32 based on Foata normal form. 9/104 useless extension candidates. Maximal degree in co-relation 192. Up to 69 conditions per place. [2023-11-23 21:33:50,743 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-23 21:33:50,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 98 flow [2023-11-23 21:33:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-23 21:33:50,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-23 21:33:50,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-23 21:33:50,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-23 21:33:50,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:50,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-23 21:33:50,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,756 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 74 flow. Second operand 3 states and 85 transitions. [2023-11-23 21:33:50,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 98 flow [2023-11-23 21:33:50,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:50,763 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 71 flow [2023-11-23 21:33:50,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-23 21:33:50,764 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-11-23 21:33:50,765 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 71 flow [2023-11-23 21:33:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:50,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:33:50,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:33:50,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:50,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:50,767 INFO L85 PathProgramCache]: Analyzing trace with hash 225587366, now seen corresponding path program 1 times [2023-11-23 21:33:50,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:50,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252402812] [2023-11-23 21:33:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:50,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:50,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252402812] [2023-11-23 21:33:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252402812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:50,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:50,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:50,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673028425] [2023-11-23 21:33:50,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:50,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:50,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:50,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-23 21:33:50,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:50,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-23 21:33:50,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:50,943 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2023-11-23 21:33:50,943 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-23 21:33:50,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 119 events. 37/119 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 319 event pairs, 37 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 204. Up to 80 conditions per place. [2023-11-23 21:33:50,945 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-23 21:33:50,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 99 flow [2023-11-23 21:33:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-23 21:33:50,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-23 21:33:50,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-23 21:33:50,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-23 21:33:50,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:50,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-23 21:33:50,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,950 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 71 flow. Second operand 3 states and 81 transitions. [2023-11-23 21:33:50,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 99 flow [2023-11-23 21:33:50,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:50,952 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 68 flow [2023-11-23 21:33:50,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-23 21:33:50,954 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -10 predicate places. [2023-11-23 21:33:50,954 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 68 flow [2023-11-23 21:33:50,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:50,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:50,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:33:50,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:33:50,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:50,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash 225587367, now seen corresponding path program 1 times [2023-11-23 21:33:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:50,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767601383] [2023-11-23 21:33:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:50,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:51,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767601383] [2023-11-23 21:33:51,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767601383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:51,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:51,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:51,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526633868] [2023-11-23 21:33:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:51,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:51,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:51,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-23 21:33:51,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:51,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-23 21:33:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:51,176 INFO L124 PetriNetUnfolderBase]: 32/108 cut-off events. [2023-11-23 21:33:51,176 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 21:33:51,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 108 events. 32/108 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 286 event pairs, 32 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 182. Up to 69 conditions per place. [2023-11-23 21:33:51,180 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-23 21:33:51,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 92 flow [2023-11-23 21:33:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-23 21:33:51,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-23 21:33:51,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-23 21:33:51,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-23 21:33:51,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:51,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-23 21:33:51,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,189 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 68 flow. Second operand 3 states and 85 transitions. [2023-11-23 21:33:51,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 92 flow [2023-11-23 21:33:51,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:51,192 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 65 flow [2023-11-23 21:33:51,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-23 21:33:51,194 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -11 predicate places. [2023-11-23 21:33:51,195 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 65 flow [2023-11-23 21:33:51,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:51,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:51,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:33:51,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:51,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1150411222, now seen corresponding path program 1 times [2023-11-23 21:33:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:51,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306043566] [2023-11-23 21:33:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:51,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:51,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306043566] [2023-11-23 21:33:51,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306043566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:51,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:51,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656235256] [2023-11-23 21:33:51,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:51,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:51,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:51,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 41 [2023-11-23 21:33:51,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:51,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 41 [2023-11-23 21:33:51,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:51,364 INFO L124 PetriNetUnfolderBase]: 37/107 cut-off events. [2023-11-23 21:33:51,367 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 21:33:51,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 107 events. 37/107 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 250 event pairs, 37 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 192. Up to 80 conditions per place. [2023-11-23 21:33:51,369 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 15 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-11-23 21:33:51,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 93 flow [2023-11-23 21:33:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-23 21:33:51,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-23 21:33:51,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-23 21:33:51,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-23 21:33:51,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:51,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-23 21:33:51,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,382 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 65 flow. Second operand 3 states and 81 transitions. [2023-11-23 21:33:51,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 93 flow [2023-11-23 21:33:51,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:51,384 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 62 flow [2023-11-23 21:33:51,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-23 21:33:51,385 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -12 predicate places. [2023-11-23 21:33:51,385 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 62 flow [2023-11-23 21:33:51,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:51,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:51,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:33:51,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:51,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1150411221, now seen corresponding path program 1 times [2023-11-23 21:33:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:51,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615705224] [2023-11-23 21:33:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:51,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615705224] [2023-11-23 21:33:51,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615705224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:51,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:51,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:51,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184886631] [2023-11-23 21:33:51,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:51,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:51,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:51,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:51,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 41 [2023-11-23 21:33:51,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:51,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 41 [2023-11-23 21:33:51,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:51,582 INFO L124 PetriNetUnfolderBase]: 32/96 cut-off events. [2023-11-23 21:33:51,582 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 21:33:51,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 96 events. 32/96 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 213 event pairs, 32 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 170. Up to 69 conditions per place. [2023-11-23 21:33:51,585 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 13 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-23 21:33:51,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 86 flow [2023-11-23 21:33:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-23 21:33:51,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6910569105691057 [2023-11-23 21:33:51,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-23 21:33:51,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-23 21:33:51,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:51,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-23 21:33:51,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,590 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 62 flow. Second operand 3 states and 85 transitions. [2023-11-23 21:33:51,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 86 flow [2023-11-23 21:33:51,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 85 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:51,592 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 59 flow [2023-11-23 21:33:51,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-23 21:33:51,595 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -13 predicate places. [2023-11-23 21:33:51,595 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 59 flow [2023-11-23 21:33:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:51,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:51,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:33:51,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:51,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1179581585, now seen corresponding path program 1 times [2023-11-23 21:33:51,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:51,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852935150] [2023-11-23 21:33:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:51,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:52,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852935150] [2023-11-23 21:33:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852935150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:52,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:52,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176333012] [2023-11-23 21:33:52,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:52,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:52,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-23 21:33:52,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:52,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:52,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-23 21:33:52,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:52,318 INFO L124 PetriNetUnfolderBase]: 34/117 cut-off events. [2023-11-23 21:33:52,318 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-23 21:33:52,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 117 events. 34/117 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 335 event pairs, 10 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 205. Up to 39 conditions per place. [2023-11-23 21:33:52,319 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 19 selfloop transitions, 3 changer transitions 11/42 dead transitions. [2023-11-23 21:33:52,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 170 flow [2023-11-23 21:33:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:33:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:33:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2023-11-23 21:33:52,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.775609756097561 [2023-11-23 21:33:52,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 159 transitions. [2023-11-23 21:33:52,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 159 transitions. [2023-11-23 21:33:52,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:52,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 159 transitions. [2023-11-23 21:33:52,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:52,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:52,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:52,326 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 59 flow. Second operand 5 states and 159 transitions. [2023-11-23 21:33:52,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 170 flow [2023-11-23 21:33:52,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:52,330 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 66 flow [2023-11-23 21:33:52,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-11-23 21:33:52,332 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-11-23 21:33:52,332 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 66 flow [2023-11-23 21:33:52,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:52,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:52,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:52,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:33:52,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:52,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2136383259, now seen corresponding path program 2 times [2023-11-23 21:33:52,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:52,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747944680] [2023-11-23 21:33:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:52,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:52,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747944680] [2023-11-23 21:33:52,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747944680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:52,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:33:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371088193] [2023-11-23 21:33:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:52,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:33:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:33:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:52,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-23 21:33:52,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:52,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:52,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-23 21:33:52,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:53,154 INFO L124 PetriNetUnfolderBase]: 14/64 cut-off events. [2023-11-23 21:33:53,154 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2023-11-23 21:33:53,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 64 events. 14/64 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 2 based on Foata normal form. 3/67 useless extension candidates. Maximal degree in co-relation 131. Up to 16 conditions per place. [2023-11-23 21:33:53,155 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 16 selfloop transitions, 3 changer transitions 7/35 dead transitions. [2023-11-23 21:33:53,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 147 flow [2023-11-23 21:33:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:33:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 21:33:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2023-11-23 21:33:53,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7195121951219512 [2023-11-23 21:33:53,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 177 transitions. [2023-11-23 21:33:53,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 177 transitions. [2023-11-23 21:33:53,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:53,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 177 transitions. [2023-11-23 21:33:53,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,161 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 66 flow. Second operand 6 states and 177 transitions. [2023-11-23 21:33:53,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 147 flow [2023-11-23 21:33:53,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 140 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-23 21:33:53,164 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 71 flow [2023-11-23 21:33:53,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-11-23 21:33:53,168 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-11-23 21:33:53,169 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 71 flow [2023-11-23 21:33:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:53,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:53,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:33:53,170 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -478397389, now seen corresponding path program 3 times [2023-11-23 21:33:53,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:53,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465389875] [2023-11-23 21:33:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:53,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:53,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:53,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465389875] [2023-11-23 21:33:53,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465389875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:53,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:33:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669285121] [2023-11-23 21:33:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:53,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:33:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:33:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:53,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 41 [2023-11-23 21:33:53,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:53,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 41 [2023-11-23 21:33:53,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:53,643 INFO L124 PetriNetUnfolderBase]: 11/52 cut-off events. [2023-11-23 21:33:53,643 INFO L125 PetriNetUnfolderBase]: For 33/35 co-relation queries the response was YES. [2023-11-23 21:33:53,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 52 events. 11/52 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 2 based on Foata normal form. 3/55 useless extension candidates. Maximal degree in co-relation 123. Up to 15 conditions per place. [2023-11-23 21:33:53,644 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-11-23 21:33:53,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 123 flow [2023-11-23 21:33:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:33:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:33:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2023-11-23 21:33:53,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121951219512195 [2023-11-23 21:33:53,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 146 transitions. [2023-11-23 21:33:53,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 146 transitions. [2023-11-23 21:33:53,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:53,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 146 transitions. [2023-11-23 21:33:53,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,649 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 71 flow. Second operand 5 states and 146 transitions. [2023-11-23 21:33:53,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 123 flow [2023-11-23 21:33:53,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:33:53,651 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-23 21:33:53,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-23 21:33:53,652 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-11-23 21:33:53,652 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-23 21:33:53,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:53,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-23 21:33:53,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-23 21:33:53,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-23 21:33:53,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-23 21:33:53,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-23 21:33:53,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-23 21:33:53,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-23 21:33:53,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-23 21:33:53,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-23 21:33:53,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-23 21:33:53,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-23 21:33:53,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-23 21:33:53,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-23 21:33:53,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-23 21:33:53,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-23 21:33:53,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-23 21:33:53,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-23 21:33:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:33:53,660 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:53,664 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:33:53,664 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:33:53,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:33:53 BasicIcfg [2023-11-23 21:33:53,670 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:33:53,671 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:33:53,671 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:33:53,672 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:33:53,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:49" (3/4) ... [2023-11-23 21:33:53,674 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:33:53,678 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 21:33:53,678 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 21:33:53,679 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-23 21:33:53,685 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2023-11-23 21:33:53,685 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-23 21:33:53,686 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 21:33:53,686 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:33:53,777 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:33:53,778 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:33:53,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:33:53,779 INFO L158 Benchmark]: Toolchain (without parser) took 5524.40ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 90.9MB in the beginning and 91.3MB in the end (delta: -377.6kB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2023-11-23 21:33:53,780 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 136.3MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:33:53,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.35ms. Allocated memory is still 136.3MB. Free memory was 90.9MB in the beginning and 79.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:33:53,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.20ms. Allocated memory is still 136.3MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:33:53,781 INFO L158 Benchmark]: Boogie Preprocessor took 29.85ms. Allocated memory is still 136.3MB. Free memory was 77.7MB in the beginning and 76.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:33:53,781 INFO L158 Benchmark]: RCFGBuilder took 794.76ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 76.6MB in the beginning and 151.5MB in the end (delta: -75.0MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-23 21:33:53,782 INFO L158 Benchmark]: TraceAbstraction took 4254.18ms. Allocated memory is still 182.5MB. Free memory was 150.5MB in the beginning and 96.5MB in the end (delta: 54.0MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2023-11-23 21:33:53,782 INFO L158 Benchmark]: Witness Printer took 107.32ms. Allocated memory is still 182.5MB. Free memory was 96.5MB in the beginning and 91.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:33:53,784 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 136.3MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.35ms. Allocated memory is still 136.3MB. Free memory was 90.9MB in the beginning and 79.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.20ms. Allocated memory is still 136.3MB. Free memory was 79.4MB in the beginning and 78.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.85ms. Allocated memory is still 136.3MB. Free memory was 77.7MB in the beginning and 76.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 794.76ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 76.6MB in the beginning and 151.5MB in the end (delta: -75.0MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4254.18ms. Allocated memory is still 182.5MB. Free memory was 150.5MB in the beginning and 96.5MB in the end (delta: 54.0MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. * Witness Printer took 107.32ms. Allocated memory is still 182.5MB. Free memory was 96.5MB in the beginning and 91.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 59]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 51 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 361 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 367 IncrementalHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 43 mSDtfsCounter, 367 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 976 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:33:53,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5fa541-f1a5-4fe9-ab6f-c50ef7f6c926/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE