./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:15,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:15,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 23:07:15,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:15,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:15,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:15,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:15,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:15,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:15,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:15,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:15,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:15,602 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:15,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:15,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:15,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:15,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:15,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:15,606 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:07:15,607 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:07:15,608 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:07:15,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:15,609 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:07:15,610 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:15,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:15,611 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:15,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:15,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:15,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:15,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:15,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:15,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:15,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:15,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:15,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:15,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:15,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:15,618 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:15,618 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_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 [2023-11-06 23:07:15,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:15,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:15,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:15,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:15,948 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:15,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2023-11-06 23:07:19,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:19,417 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:19,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2023-11-06 23:07:19,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/data/d1ababcf4/6f70cc7cfd694f65b79f5129afcad7b5/FLAG8ab3507f0 [2023-11-06 23:07:19,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/data/d1ababcf4/6f70cc7cfd694f65b79f5129afcad7b5 [2023-11-06 23:07:19,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:19,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:19,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:19,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:19,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:19,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c24917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19, skipping insertion in model container [2023-11-06 23:07:19,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:19,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:19,701 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:19,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:19,752 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:19,752 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:07:19,760 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:19,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19 WrapperNode [2023-11-06 23:07:19,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:19,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:19,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:19,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:19,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,809 INFO L138 Inliner]: procedures = 21, calls = 61, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 156 [2023-11-06 23:07:19,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:19,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:19,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:19,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:19,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:19,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:19,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:19,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:19,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (1/1) ... [2023-11-06 23:07:19,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:19,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:19,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:19,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:07:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:07:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:07:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:07:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:07:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:07:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:07:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:19,916 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:07:20,027 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:20,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:20,413 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:20,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:20,494 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:07:20,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:20 BoogieIcfgContainer [2023-11-06 23:07:20,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:20,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:20,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:20,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:20,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:19" (1/3) ... [2023-11-06 23:07:20,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9e7dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:20, skipping insertion in model container [2023-11-06 23:07:20,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:19" (2/3) ... [2023-11-06 23:07:20,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9e7dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:20, skipping insertion in model container [2023-11-06 23:07:20,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:20" (3/3) ... [2023-11-06 23:07:20,512 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2023-11-06 23:07:20,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:20,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 23:07:20,532 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:20,610 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:07:20,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 126 transitions, 266 flow [2023-11-06 23:07:20,801 INFO L124 PetriNetUnfolderBase]: 2/124 cut-off events. [2023-11-06 23:07:20,802 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:20,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 124 events. 2/124 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-11-06 23:07:20,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 126 transitions, 266 flow [2023-11-06 23:07:20,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 119 transitions, 250 flow [2023-11-06 23:07:20,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:20,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 119 transitions, 250 flow [2023-11-06 23:07:20,833 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 119 transitions, 250 flow [2023-11-06 23:07:20,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 119 transitions, 250 flow [2023-11-06 23:07:20,907 INFO L124 PetriNetUnfolderBase]: 2/119 cut-off events. [2023-11-06 23:07:20,908 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:20,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 119 events. 2/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-11-06 23:07:20,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-11-06 23:07:25,381 INFO L134 LiptonReduction]: Checked pairs total: 5312 [2023-11-06 23:07:25,381 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-06 23:07:25,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:25,426 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;@dd922d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:25,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 23:07:25,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:25,429 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 23:07:25,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:25,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:25,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 23:07:25,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:25,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 504, now seen corresponding path program 1 times [2023-11-06 23:07:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293203070] [2023-11-06 23:07:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:25,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293203070] [2023-11-06 23:07:25,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293203070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:25,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:25,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 23:07:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422074992] [2023-11-06 23:07:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:25,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:25,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 234 [2023-11-06 23:07:25,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:25,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 234 [2023-11-06 23:07:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:25,716 INFO L124 PetriNetUnfolderBase]: 168/395 cut-off events. [2023-11-06 23:07:25,716 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 23:07:25,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 395 events. 168/395 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2071 event pairs, 168 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 636. Up to 312 conditions per place. [2023-11-06 23:07:25,723 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 23 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-11-06 23:07:25,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 124 flow [2023-11-06 23:07:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 23:07:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2023-11-06 23:07:25,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-11-06 23:07:25,740 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2023-11-06 23:07:25,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2023-11-06 23:07:25,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:25,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2023-11-06 23:07:25,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,755 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,757 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 2 states and 252 transitions. [2023-11-06 23:07:25,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 124 flow [2023-11-06 23:07:25,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:07:25,763 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 70 flow [2023-11-06 23:07:25,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-11-06 23:07:25,769 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-11-06 23:07:25,769 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 70 flow [2023-11-06 23:07:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:25,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:07:25,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:25,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:25,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash 495051, now seen corresponding path program 1 times [2023-11-06 23:07:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:25,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165418017] [2023-11-06 23:07:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:25,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165418017] [2023-11-06 23:07:25,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165418017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:25,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:25,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:25,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332382669] [2023-11-06 23:07:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:25,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:25,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:25,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 234 [2023-11-06 23:07:26,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:26,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 234 [2023-11-06 23:07:26,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:26,115 INFO L124 PetriNetUnfolderBase]: 160/375 cut-off events. [2023-11-06 23:07:26,115 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:26,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 375 events. 160/375 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1944 event pairs, 160 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 674. Up to 293 conditions per place. [2023-11-06 23:07:26,122 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 20 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-06 23:07:26,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 108 flow [2023-11-06 23:07:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-11-06 23:07:26,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2023-11-06 23:07:26,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-11-06 23:07:26,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-11-06 23:07:26,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:26,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-11-06 23:07:26,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,140 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 70 flow. Second operand 3 states and 332 transitions. [2023-11-06 23:07:26,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 108 flow [2023-11-06 23:07:26,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:26,145 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 68 flow [2023-11-06 23:07:26,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=68, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-11-06 23:07:26,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-11-06 23:07:26,146 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 68 flow [2023-11-06 23:07:26,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:26,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:07:26,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:07:26,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:26,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 495052, now seen corresponding path program 1 times [2023-11-06 23:07:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533358528] [2023-11-06 23:07:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:26,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533358528] [2023-11-06 23:07:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533358528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:26,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286879531] [2023-11-06 23:07:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:26,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 234 [2023-11-06 23:07:26,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:26,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 234 [2023-11-06 23:07:26,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:26,546 INFO L124 PetriNetUnfolderBase]: 152/355 cut-off events. [2023-11-06 23:07:26,546 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:26,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 355 events. 152/355 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1809 event pairs, 152 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 637. Up to 275 conditions per place. [2023-11-06 23:07:26,549 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 18 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-06 23:07:26,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 102 flow [2023-11-06 23:07:26,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-11-06 23:07:26,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2023-11-06 23:07:26,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-11-06 23:07:26,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-11-06 23:07:26,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:26,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-11-06 23:07:26,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,557 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 342 transitions. [2023-11-06 23:07:26,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 102 flow [2023-11-06 23:07:26,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:26,559 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 65 flow [2023-11-06 23:07:26,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=65, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-06 23:07:26,561 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-11-06 23:07:26,561 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 65 flow [2023-11-06 23:07:26,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:26,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:07:26,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:07:26,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:26,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,567 INFO L85 PathProgramCache]: Analyzing trace with hash 475757641, now seen corresponding path program 1 times [2023-11-06 23:07:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633019393] [2023-11-06 23:07:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633019393] [2023-11-06 23:07:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633019393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:26,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:26,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735437353] [2023-11-06 23:07:26,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:26,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:26,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:26,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:26,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 234 [2023-11-06 23:07:26,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:26,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 234 [2023-11-06 23:07:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:26,773 INFO L124 PetriNetUnfolderBase]: 112/274 cut-off events. [2023-11-06 23:07:26,774 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:26,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 274 events. 112/274 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1311 event pairs, 112 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 492. Up to 210 conditions per place. [2023-11-06 23:07:26,776 INFO L140 encePairwiseOnDemand]: 232/234 looper letters, 17 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-11-06 23:07:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 99 flow [2023-11-06 23:07:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-11-06 23:07:26,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47150997150997154 [2023-11-06 23:07:26,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-11-06 23:07:26,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-11-06 23:07:26,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:26,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-11-06 23:07:26,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,784 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 65 flow. Second operand 3 states and 331 transitions. [2023-11-06 23:07:26,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 99 flow [2023-11-06 23:07:26,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:26,787 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2023-11-06 23:07:26,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-06 23:07:26,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-11-06 23:07:26,789 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2023-11-06 23:07:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:26,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:07:26,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:07:26,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:26,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 475757639, now seen corresponding path program 1 times [2023-11-06 23:07:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:26,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262574354] [2023-11-06 23:07:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:26,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262574354] [2023-11-06 23:07:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262574354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:26,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:26,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:26,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388710996] [2023-11-06 23:07:26,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:26,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:26,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:26,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:26,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 234 [2023-11-06 23:07:26,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:26,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:26,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 234 [2023-11-06 23:07:26,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:27,027 INFO L124 PetriNetUnfolderBase]: 72/193 cut-off events. [2023-11-06 23:07:27,028 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:27,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 193 events. 72/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 816 event pairs, 72 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 347. Up to 145 conditions per place. [2023-11-06 23:07:27,029 INFO L140 encePairwiseOnDemand]: 232/234 looper letters, 16 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-11-06 23:07:27,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 96 flow [2023-11-06 23:07:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-06 23:07:27,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2023-11-06 23:07:27,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-06 23:07:27,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-06 23:07:27,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:27,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-06 23:07:27,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,037 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 3 states and 315 transitions. [2023-11-06 23:07:27,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 96 flow [2023-11-06 23:07:27,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:27,040 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 63 flow [2023-11-06 23:07:27,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=61, 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=63, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-06 23:07:27,042 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-11-06 23:07:27,043 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 63 flow [2023-11-06 23:07:27,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:27,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:27,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:27,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:27,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash -872379283, now seen corresponding path program 1 times [2023-11-06 23:07:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892862472] [2023-11-06 23:07:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892862472] [2023-11-06 23:07:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892862472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:27,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450923152] [2023-11-06 23:07:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:27,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:27,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 234 [2023-11-06 23:07:27,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:27,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 234 [2023-11-06 23:07:27,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:27,703 INFO L124 PetriNetUnfolderBase]: 172/364 cut-off events. [2023-11-06 23:07:27,704 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 23:07:27,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 364 events. 172/364 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1522 event pairs, 57 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 728. Up to 98 conditions per place. [2023-11-06 23:07:27,707 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 44 selfloop transitions, 7 changer transitions 17/74 dead transitions. [2023-11-06 23:07:27,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 74 transitions, 302 flow [2023-11-06 23:07:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:07:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:07:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 893 transitions. [2023-11-06 23:07:27,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47702991452991456 [2023-11-06 23:07:27,713 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 893 transitions. [2023-11-06 23:07:27,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 893 transitions. [2023-11-06 23:07:27,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:27,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 893 transitions. [2023-11-06 23:07:27,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.625) internal successors, (893), 8 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,727 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 8 states and 893 transitions. [2023-11-06 23:07:27,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 74 transitions, 302 flow [2023-11-06 23:07:27,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:27,730 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 100 flow [2023-11-06 23:07:27,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-11-06 23:07:27,732 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-06 23:07:27,732 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 100 flow [2023-11-06 23:07:27,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:27,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:27,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:27,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:07:27,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:27,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:27,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1629100299, now seen corresponding path program 2 times [2023-11-06 23:07:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229505123] [2023-11-06 23:07:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:28,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229505123] [2023-11-06 23:07:28,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229505123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:28,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:28,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:07:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726406694] [2023-11-06 23:07:28,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:28,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:28,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:28,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:28,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 234 [2023-11-06 23:07:28,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 107.71428571428571) internal successors, (754), 7 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:28,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 234 [2023-11-06 23:07:28,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:28,239 INFO L124 PetriNetUnfolderBase]: 144/366 cut-off events. [2023-11-06 23:07:28,239 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 23:07:28,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 366 events. 144/366 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1732 event pairs, 27 based on Foata normal form. 6/364 useless extension candidates. Maximal degree in co-relation 736. Up to 187 conditions per place. [2023-11-06 23:07:28,242 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 22 selfloop transitions, 4 changer transitions 17/56 dead transitions. [2023-11-06 23:07:28,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 236 flow [2023-11-06 23:07:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:07:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2023-11-06 23:07:28,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48005698005698005 [2023-11-06 23:07:28,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2023-11-06 23:07:28,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2023-11-06 23:07:28,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:28,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2023-11-06 23:07:28,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,254 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 100 flow. Second operand 6 states and 674 transitions. [2023-11-06 23:07:28,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 236 flow [2023-11-06 23:07:28,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 234 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:28,257 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 127 flow [2023-11-06 23:07:28,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-11-06 23:07:28,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-06 23:07:28,259 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 127 flow [2023-11-06 23:07:28,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.71428571428571) internal successors, (754), 7 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:28,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:07:28,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:28,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2099715545, now seen corresponding path program 3 times [2023-11-06 23:07:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007695317] [2023-11-06 23:07:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007695317] [2023-11-06 23:07:28,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007695317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:28,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:28,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:28,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883863750] [2023-11-06 23:07:28,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:28,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:28,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:28,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 234 [2023-11-06 23:07:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 234 [2023-11-06 23:07:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:28,430 INFO L124 PetriNetUnfolderBase]: 89/245 cut-off events. [2023-11-06 23:07:28,431 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-11-06 23:07:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 245 events. 89/245 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1033 event pairs, 68 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 612. Up to 172 conditions per place. [2023-11-06 23:07:28,433 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 21 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-11-06 23:07:28,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 191 flow [2023-11-06 23:07:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-11-06 23:07:28,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2023-11-06 23:07:28,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-11-06 23:07:28,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-11-06 23:07:28,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:28,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-11-06 23:07:28,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,440 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 127 flow. Second operand 3 states and 350 transitions. [2023-11-06 23:07:28,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 191 flow [2023-11-06 23:07:28,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:28,443 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 130 flow [2023-11-06 23:07:28,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-11-06 23:07:28,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2023-11-06 23:07:28,445 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 130 flow [2023-11-06 23:07:28,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:28,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:07:28,446 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:28,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1130581257, now seen corresponding path program 4 times [2023-11-06 23:07:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212932038] [2023-11-06 23:07:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212932038] [2023-11-06 23:07:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212932038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:28,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:28,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:28,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541448628] [2023-11-06 23:07:28,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:28,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:28,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:28,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:28,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2023-11-06 23:07:28,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:28,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2023-11-06 23:07:28,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:28,844 INFO L124 PetriNetUnfolderBase]: 90/276 cut-off events. [2023-11-06 23:07:28,844 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-06 23:07:28,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 276 events. 90/276 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1211 event pairs, 39 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 675. Up to 148 conditions per place. [2023-11-06 23:07:28,847 INFO L140 encePairwiseOnDemand]: 229/234 looper letters, 17 selfloop transitions, 2 changer transitions 12/45 dead transitions. [2023-11-06 23:07:28,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 223 flow [2023-11-06 23:07:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-06 23:07:28,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2023-11-06 23:07:28,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-06 23:07:28,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-06 23:07:28,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:28,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-06 23:07:28,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,857 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 130 flow. Second operand 5 states and 562 transitions. [2023-11-06 23:07:28,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 223 flow [2023-11-06 23:07:28,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:28,863 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 124 flow [2023-11-06 23:07:28,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2023-11-06 23:07:28,865 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-11-06 23:07:28,865 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 124 flow [2023-11-06 23:07:28,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:28,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:07:28,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:28,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1202317293, now seen corresponding path program 5 times [2023-11-06 23:07:28,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541441125] [2023-11-06 23:07:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:29,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541441125] [2023-11-06 23:07:29,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541441125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568622484] [2023-11-06 23:07:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:07:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:07:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:29,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 234 [2023-11-06 23:07:29,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:29,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 234 [2023-11-06 23:07:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:29,324 INFO L124 PetriNetUnfolderBase]: 104/274 cut-off events. [2023-11-06 23:07:29,325 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-06 23:07:29,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 274 events. 104/274 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1128 event pairs, 27 based on Foata normal form. 8/272 useless extension candidates. Maximal degree in co-relation 687. Up to 141 conditions per place. [2023-11-06 23:07:29,327 INFO L140 encePairwiseOnDemand]: 227/234 looper letters, 27 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2023-11-06 23:07:29,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 246 flow [2023-11-06 23:07:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:07:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 668 transitions. [2023-11-06 23:07:29,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2023-11-06 23:07:29,331 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 668 transitions. [2023-11-06 23:07:29,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 668 transitions. [2023-11-06 23:07:29,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:29,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 668 transitions. [2023-11-06 23:07:29,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 234.0) internal successors, (1638), 7 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,339 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 124 flow. Second operand 6 states and 668 transitions. [2023-11-06 23:07:29,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 246 flow [2023-11-06 23:07:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 228 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 23:07:29,342 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 167 flow [2023-11-06 23:07:29,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-11-06 23:07:29,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-11-06 23:07:29,343 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 167 flow [2023-11-06 23:07:29,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 6 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:29,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:29,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:07:29,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:29,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1641871751, now seen corresponding path program 6 times [2023-11-06 23:07:29,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306146103] [2023-11-06 23:07:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306146103] [2023-11-06 23:07:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306146103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350119855] [2023-11-06 23:07:29,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:29,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 234 [2023-11-06 23:07:29,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:29,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 234 [2023-11-06 23:07:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:29,509 INFO L124 PetriNetUnfolderBase]: 105/285 cut-off events. [2023-11-06 23:07:29,509 INFO L125 PetriNetUnfolderBase]: For 157/162 co-relation queries the response was YES. [2023-11-06 23:07:29,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 285 events. 105/285 cut-off events. For 157/162 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1199 event pairs, 69 based on Foata normal form. 10/281 useless extension candidates. Maximal degree in co-relation 767. Up to 175 conditions per place. [2023-11-06 23:07:29,512 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 30 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 23:07:29,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 260 flow [2023-11-06 23:07:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-06 23:07:29,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028490028490028 [2023-11-06 23:07:29,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-06 23:07:29,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-06 23:07:29,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:29,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-06 23:07:29,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,522 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 167 flow. Second operand 3 states and 353 transitions. [2023-11-06 23:07:29,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 260 flow [2023-11-06 23:07:29,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 254 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:29,526 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 169 flow [2023-11-06 23:07:29,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-11-06 23:07:29,527 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2023-11-06 23:07:29,528 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 169 flow [2023-11-06 23:07:29,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:29,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:07:29,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:29,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1669662167, now seen corresponding path program 7 times [2023-11-06 23:07:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360745487] [2023-11-06 23:07:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:29,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:29,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360745487] [2023-11-06 23:07:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360745487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:29,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:29,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826607353] [2023-11-06 23:07:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:29,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:29,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 234 [2023-11-06 23:07:29,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:29,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 234 [2023-11-06 23:07:29,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:29,971 INFO L124 PetriNetUnfolderBase]: 153/334 cut-off events. [2023-11-06 23:07:29,971 INFO L125 PetriNetUnfolderBase]: For 184/186 co-relation queries the response was YES. [2023-11-06 23:07:29,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 334 events. 153/334 cut-off events. For 184/186 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1302 event pairs, 44 based on Foata normal form. 3/327 useless extension candidates. Maximal degree in co-relation 979. Up to 94 conditions per place. [2023-11-06 23:07:29,974 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 29 selfloop transitions, 6 changer transitions 29/70 dead transitions. [2023-11-06 23:07:29,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 402 flow [2023-11-06 23:07:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:07:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:07:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 881 transitions. [2023-11-06 23:07:29,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706196581196581 [2023-11-06 23:07:29,979 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 881 transitions. [2023-11-06 23:07:29,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 881 transitions. [2023-11-06 23:07:29,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:29,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 881 transitions. [2023-11-06 23:07:29,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.125) internal successors, (881), 8 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,989 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 234.0) internal successors, (2106), 9 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,989 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 169 flow. Second operand 8 states and 881 transitions. [2023-11-06 23:07:29,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 402 flow [2023-11-06 23:07:29,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:29,994 INFO L231 Difference]: Finished difference. Result has 62 places, 29 transitions, 129 flow [2023-11-06 23:07:29,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=29} [2023-11-06 23:07:29,996 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-11-06 23:07:29,997 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 29 transitions, 129 flow [2023-11-06 23:07:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:29,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:29,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:29,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:07:29,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 23:07:29,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1079336443, now seen corresponding path program 8 times [2023-11-06 23:07:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:29,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261471620] [2023-11-06 23:07:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:30,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261471620] [2023-11-06 23:07:30,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261471620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:30,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:30,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935904539] [2023-11-06 23:07:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:30,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:30,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:30,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:30,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2023-11-06 23:07:30,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 29 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:30,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2023-11-06 23:07:30,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:30,331 INFO L124 PetriNetUnfolderBase]: 17/65 cut-off events. [2023-11-06 23:07:30,331 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-06 23:07:30,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 65 events. 17/65 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 7 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 175. Up to 22 conditions per place. [2023-11-06 23:07:30,332 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-06 23:07:30,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 22 transitions, 120 flow [2023-11-06 23:07:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2023-11-06 23:07:30,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-06 23:07:30,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2023-11-06 23:07:30,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2023-11-06 23:07:30,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:30,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2023-11-06 23:07:30,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,342 INFO L175 Difference]: Start difference. First operand has 62 places, 29 transitions, 129 flow. Second operand 5 states and 546 transitions. [2023-11-06 23:07:30,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 22 transitions, 120 flow [2023-11-06 23:07:30,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 22 transitions, 98 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-06 23:07:30,343 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-06 23:07:30,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-06 23:07:30,344 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-11-06 23:07:30,344 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-06 23:07:30,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:30,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-06 23:07:30,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-06 23:07:30,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-06 23:07:30,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-06 23:07:30,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-06 23:07:30,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-06 23:07:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-06 23:07:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-06 23:07:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-06 23:07:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-06 23:07:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-06 23:07:30,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-06 23:07:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:07:30,351 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1] [2023-11-06 23:07:30,354 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:07:30,354 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:07:30,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:07:30 BasicIcfg [2023-11-06 23:07:30,359 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:07:30,360 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:07:30,360 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:07:30,360 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:07:30,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:20" (3/4) ... [2023-11-06 23:07:30,362 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:07:30,365 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:07:30,366 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:07:30,373 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-06 23:07:30,374 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 23:07:30,374 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:07:30,374 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:07:30,438 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:07:30,439 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:07:30,439 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:07:30,440 INFO L158 Benchmark]: Toolchain (without parser) took 10982.00ms. Allocated memory was 140.5MB in the beginning and 224.4MB in the end (delta: 83.9MB). Free memory was 95.1MB in the beginning and 166.5MB in the end (delta: -71.4MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-06 23:07:30,440 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 140.5MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:07:30,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.13ms. Allocated memory is still 140.5MB. Free memory was 94.5MB in the beginning and 83.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:07:30,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 140.5MB. Free memory was 83.0MB in the beginning and 81.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:07:30,441 INFO L158 Benchmark]: Boogie Preprocessor took 31.32ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 79.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:07:30,442 INFO L158 Benchmark]: RCFGBuilder took 654.91ms. Allocated memory is still 140.5MB. Free memory was 79.8MB in the beginning and 59.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 23:07:30,442 INFO L158 Benchmark]: TraceAbstraction took 9859.37ms. Allocated memory was 140.5MB in the beginning and 224.4MB in the end (delta: 83.9MB). Free memory was 58.9MB in the beginning and 169.7MB in the end (delta: -110.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:07:30,443 INFO L158 Benchmark]: Witness Printer took 79.85ms. Allocated memory is still 224.4MB. Free memory was 169.7MB in the beginning and 166.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:07:30,444 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 140.5MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.13ms. Allocated memory is still 140.5MB. Free memory was 94.5MB in the beginning and 83.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 140.5MB. Free memory was 83.0MB in the beginning and 81.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.32ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 79.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 654.91ms. Allocated memory is still 140.5MB. Free memory was 79.8MB in the beginning and 59.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9859.37ms. Allocated memory was 140.5MB in the beginning and 224.4MB in the end (delta: 83.9MB). Free memory was 58.9MB in the beginning and 169.7MB in the end (delta: -110.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 79.85ms. Allocated memory is still 224.4MB. Free memory was 169.7MB in the beginning and 166.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 124 PlacesBefore, 43 PlacesAfterwards, 119 TransitionsBefore, 36 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 108 TotalNumberOfCompositions, 5312 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1979, independent: 1710, independent conditional: 0, independent unconditional: 1710, dependent: 269, dependent conditional: 0, dependent unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 324, independent: 306, independent conditional: 0, independent unconditional: 306, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1979, independent: 1404, independent conditional: 0, independent unconditional: 1404, dependent: 251, dependent conditional: 0, dependent unconditional: 251, unknown: 324, unknown conditional: 0, unknown unconditional: 324] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 109]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 151 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 550 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 352 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 110 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1511 IncrementalHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 12 mSDtfsCounter, 1511 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=11, InterpolantAutomatonStates: 58, 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, 2.0s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 820 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:07:30,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca849e3c-f854-4d5a-bcb8-25c1f8d16ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE