./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.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_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/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_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/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_15d19882-0590-4718-aaa7-762c59600124/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 fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:17,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:17,894 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:13:17,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:17,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:17,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:17,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:17,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:17,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:17,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:17,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:17,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:17,931 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:17,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:17,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:13:17,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:17,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:13:17,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:17,934 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:13:17,935 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:13:17,935 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:13:17,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:17,936 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:13:17,937 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:13:17,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:13:17,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:17,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:17,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:17,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:17,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:17,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:17,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:17,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:17,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:17,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:17,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:17,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:17,943 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:17,943 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_15d19882-0590-4718-aaa7-762c59600124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f [2023-11-06 22:13:18,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:18,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:18,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:18,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:18,257 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:18,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-11-06 22:13:21,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:13:21,557 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:13:21,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/sv-benchmarks/c/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-11-06 22:13:21,569 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/data/535c3f715/2360f1276abc45668fef18c97f61034b/FLAG75cc28858 [2023-11-06 22:13:21,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/data/535c3f715/2360f1276abc45668fef18c97f61034b [2023-11-06 22:13:21,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:13:21,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:13:21,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:21,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:13:21,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:13:21,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a05b601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21, skipping insertion in model container [2023-11-06 22:13:21,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:13:21,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:21,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:13:21,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:21,866 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:21,866 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:21,875 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:13:21,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21 WrapperNode [2023-11-06 22:13:21,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:21,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:21,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:13:21,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:13:21,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,930 INFO L138 Inliner]: procedures = 20, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2023-11-06 22:13:21,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:21,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:13:21,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:13:21,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:13:21,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:13:21,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:13:21,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:13:21,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:13:21,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (1/1) ... [2023-11-06 22:13:21,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:22,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:22,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:13:22,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:13:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:13:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:13:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:13:22,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:13:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:13:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:13:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:13:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:13:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:13:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:13:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:13:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:13:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:13:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:13:22,076 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 22:13:22,219 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:13:22,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:13:22,461 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:13:22,521 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:13:22,521 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:13:22,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:22 BoogieIcfgContainer [2023-11-06 22:13:22,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:13:22,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:13:22,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:13:22,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:13:22,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:21" (1/3) ... [2023-11-06 22:13:22,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5562f482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:22, skipping insertion in model container [2023-11-06 22:13:22,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:21" (2/3) ... [2023-11-06 22:13:22,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5562f482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:22, skipping insertion in model container [2023-11-06 22:13:22,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:22" (3/3) ... [2023-11-06 22:13:22,537 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2023-11-06 22:13:22,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:13:22,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:13:22,559 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:13:22,632 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:13:22,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 111 transitions, 236 flow [2023-11-06 22:13:22,747 INFO L124 PetriNetUnfolderBase]: 7/109 cut-off events. [2023-11-06 22:13:22,751 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:13:22,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 7/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 22:13:22,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 111 transitions, 236 flow [2023-11-06 22:13:22,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 104 transitions, 220 flow [2023-11-06 22:13:22,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:13:22,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 104 transitions, 220 flow [2023-11-06 22:13:22,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 104 transitions, 220 flow [2023-11-06 22:13:22,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 220 flow [2023-11-06 22:13:22,880 INFO L124 PetriNetUnfolderBase]: 7/104 cut-off events. [2023-11-06 22:13:22,880 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:13:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 7/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-06 22:13:22,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 348 [2023-11-06 22:13:27,155 INFO L134 LiptonReduction]: Checked pairs total: 488 [2023-11-06 22:13:27,156 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-11-06 22:13:27,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:13:27,179 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;@d3b6ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:13:27,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 22:13:27,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:13:27,181 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:13:27,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:27,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:27,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:13:27,182 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 22:13:27,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:27,187 INFO L85 PathProgramCache]: Analyzing trace with hash 441, now seen corresponding path program 1 times [2023-11-06 22:13:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:27,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487649835] [2023-11-06 22:13:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:27,299 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 22:13:27,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487649835] [2023-11-06 22:13:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487649835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:27,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:27,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:13:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020544507] [2023-11-06 22:13:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:27,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:13:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:13:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:13:27,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 220 [2023-11-06 22:13:27,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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 22:13:27,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:27,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 220 [2023-11-06 22:13:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:27,435 INFO L124 PetriNetUnfolderBase]: 45/80 cut-off events. [2023-11-06 22:13:27,436 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:13:27,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 154 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2023-11-06 22:13:27,440 INFO L140 encePairwiseOnDemand]: 217/220 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-06 22:13:27,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2023-11-06 22:13:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:13:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:13:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2023-11-06 22:13:27,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-06 22:13:27,461 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 220 transitions. [2023-11-06 22:13:27,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 220 transitions. [2023-11-06 22:13:27,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:27,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 220 transitions. [2023-11-06 22:13:27,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:13:27,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 22:13:27,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 22:13:27,482 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 220 transitions. [2023-11-06 22:13:27,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2023-11-06 22:13:27,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:13:27,487 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2023-11-06 22:13:27,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-11-06 22:13:27,496 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-11-06 22:13:27,496 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2023-11-06 22:13:27,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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 22:13:27,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:27,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:13:27,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:13:27,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:13:27,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:27,499 INFO L85 PathProgramCache]: Analyzing trace with hash 432527, now seen corresponding path program 1 times [2023-11-06 22:13:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068945250] [2023-11-06 22:13:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:27,825 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 22:13:27,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068945250] [2023-11-06 22:13:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068945250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082648139] [2023-11-06 22:13:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:27,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:27,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:27,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 220 [2023-11-06 22:13:27,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 22:13:27,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:27,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 220 [2023-11-06 22:13:27,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:27,943 INFO L124 PetriNetUnfolderBase]: 41/72 cut-off events. [2023-11-06 22:13:27,944 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:27,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 129 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2023-11-06 22:13:27,947 INFO L140 encePairwiseOnDemand]: 217/220 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:13:27,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2023-11-06 22:13:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:27,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-11-06 22:13:27,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2023-11-06 22:13:27,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-11-06 22:13:27,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-11-06 22:13:27,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:27,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-11-06 22:13:27,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 22:13:27,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:27,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:27,958 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 298 transitions. [2023-11-06 22:13:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2023-11-06 22:13:27,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:13:27,959 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2023-11-06 22:13:27,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-11-06 22:13:27,961 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-11-06 22:13:27,961 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2023-11-06 22:13:27,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 22:13:27,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:27,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:13:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:13:27,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:13:27,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 432526, now seen corresponding path program 1 times [2023-11-06 22:13:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456768839] [2023-11-06 22:13:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,016 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 22:13:28,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:28,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456768839] [2023-11-06 22:13:28,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456768839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:28,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:28,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:28,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650452240] [2023-11-06 22:13:28,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:28,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:28,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:28,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 220 [2023-11-06 22:13:28,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 22:13:28,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:28,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 220 [2023-11-06 22:13:28,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:28,110 INFO L124 PetriNetUnfolderBase]: 37/64 cut-off events. [2023-11-06 22:13:28,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:28,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 110 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-11-06 22:13:28,112 INFO L140 encePairwiseOnDemand]: 217/220 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-06 22:13:28,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2023-11-06 22:13:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-11-06 22:13:28,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2023-11-06 22:13:28,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-11-06 22:13:28,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-11-06 22:13:28,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:28,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-11-06 22:13:28,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 22:13:28,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,124 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 284 transitions. [2023-11-06 22:13:28,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2023-11-06 22:13:28,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:28,126 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2023-11-06 22:13:28,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-11-06 22:13:28,128 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:13:28,128 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2023-11-06 22:13:28,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 22:13:28,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:28,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:13:28,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:13:28,134 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 22:13:28,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash 415666114, now seen corresponding path program 1 times [2023-11-06 22:13:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001639091] [2023-11-06 22:13:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,329 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 22:13:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:28,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001639091] [2023-11-06 22:13:28,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001639091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:28,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:28,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968578627] [2023-11-06 22:13:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:28,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 220 [2023-11-06 22:13:28,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 22:13:28,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:28,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 220 [2023-11-06 22:13:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:28,470 INFO L124 PetriNetUnfolderBase]: 29/52 cut-off events. [2023-11-06 22:13:28,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:28,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 75 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2023-11-06 22:13:28,473 INFO L140 encePairwiseOnDemand]: 218/220 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-11-06 22:13:28,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2023-11-06 22:13:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-06 22:13:28,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2023-11-06 22:13:28,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-06 22:13:28,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-06 22:13:28,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:28,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-06 22:13:28,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 22:13:28,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,482 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 288 transitions. [2023-11-06 22:13:28,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2023-11-06 22:13:28,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:28,483 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-06 22:13:28,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-06 22:13:28,485 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:13:28,486 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-06 22:13:28,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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 22:13:28,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:28,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:13:28,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:13:28,488 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 22:13:28,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash 415666113, now seen corresponding path program 1 times [2023-11-06 22:13:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:28,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789488701] [2023-11-06 22:13:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,562 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 22:13:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789488701] [2023-11-06 22:13:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789488701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:28,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:28,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127631432] [2023-11-06 22:13:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:28,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 220 [2023-11-06 22:13:28,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 22:13:28,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:28,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 220 [2023-11-06 22:13:28,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:28,665 INFO L124 PetriNetUnfolderBase]: 21/40 cut-off events. [2023-11-06 22:13:28,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:28,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2023-11-06 22:13:28,666 INFO L140 encePairwiseOnDemand]: 218/220 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-11-06 22:13:28,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2023-11-06 22:13:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-11-06 22:13:28,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075757575757576 [2023-11-06 22:13:28,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-11-06 22:13:28,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-11-06 22:13:28,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:28,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-11-06 22:13:28,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 22:13:28,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,675 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 269 transitions. [2023-11-06 22:13:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2023-11-06 22:13:28,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:28,676 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2023-11-06 22:13:28,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-06 22:13:28,677 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:13:28,678 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2023-11-06 22:13:28,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 22:13:28,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:28,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:13:28,679 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 22:13:28,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash -46244063, now seen corresponding path program 1 times [2023-11-06 22:13:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46553611] [2023-11-06 22:13:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:28,741 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 22:13:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46553611] [2023-11-06 22:13:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46553611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:28,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:13:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137918096] [2023-11-06 22:13:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:28,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 220 [2023-11-06 22:13:28,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 22:13:28,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:28,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 220 [2023-11-06 22:13:28,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:28,777 INFO L124 PetriNetUnfolderBase]: 21/39 cut-off events. [2023-11-06 22:13:28,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:13:28,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 39 events. 21/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 9 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 85. Up to 39 conditions per place. [2023-11-06 22:13:28,778 INFO L140 encePairwiseOnDemand]: 218/220 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-11-06 22:13:28,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 57 flow [2023-11-06 22:13:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:13:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-11-06 22:13:28,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2023-11-06 22:13:28,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-11-06 22:13:28,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-11-06 22:13:28,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:28,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-11-06 22:13:28,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 22:13:28,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 22:13:28,786 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 304 transitions. [2023-11-06 22:13:28,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 57 flow [2023-11-06 22:13:28,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:13:28,788 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-11-06 22:13:28,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-11-06 22:13:28,789 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:13:28,789 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-11-06 22:13:28,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 22:13:28,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-06 22:13:28,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-06 22:13:28,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-06 22:13:28,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-06 22:13:28,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-06 22:13:28,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-06 22:13:28,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-06 22:13:28,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-06 22:13:28,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-06 22:13:28,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-06 22:13:28,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-06 22:13:28,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-06 22:13:28,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:13:28,797 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-06 22:13:28,801 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:13:28,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:13:28,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:13:28 BasicIcfg [2023-11-06 22:13:28,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:13:28,808 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:13:28,808 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:13:28,809 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:13:28,809 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:22" (3/4) ... [2023-11-06 22:13:28,812 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:13:28,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:13:28,816 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:13:28,822 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-06 22:13:28,823 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:13:28,823 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:13:28,823 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:13:28,876 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:13:28,877 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:13:28,877 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:13:28,878 INFO L158 Benchmark]: Toolchain (without parser) took 7289.57ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 161.3MB in the beginning and 172.4MB in the end (delta: -11.2MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2023-11-06 22:13:28,878 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:13:28,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.16ms. Allocated memory is still 207.6MB. Free memory was 161.3MB in the beginning and 149.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:13:28,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.48ms. Allocated memory is still 207.6MB. Free memory was 149.8MB in the beginning and 148.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:13:28,879 INFO L158 Benchmark]: Boogie Preprocessor took 38.47ms. Allocated memory is still 207.6MB. Free memory was 148.0MB in the beginning and 146.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:13:28,880 INFO L158 Benchmark]: RCFGBuilder took 553.00ms. Allocated memory is still 207.6MB. Free memory was 146.6MB in the beginning and 128.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:13:28,880 INFO L158 Benchmark]: TraceAbstraction took 6281.26ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 128.1MB in the beginning and 175.6MB in the end (delta: -47.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:13:28,881 INFO L158 Benchmark]: Witness Printer took 68.76ms. Allocated memory is still 249.6MB. Free memory was 175.6MB in the beginning and 172.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:13:28,883 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory was 75.8MB in the beginning and 75.7MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.16ms. Allocated memory is still 207.6MB. Free memory was 161.3MB in the beginning and 149.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.48ms. Allocated memory is still 207.6MB. Free memory was 149.8MB in the beginning and 148.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.47ms. Allocated memory is still 207.6MB. Free memory was 148.0MB in the beginning and 146.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.00ms. Allocated memory is still 207.6MB. Free memory was 146.6MB in the beginning and 128.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6281.26ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 128.1MB in the beginning and 175.6MB in the end (delta: -47.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 68.76ms. Allocated memory is still 249.6MB. Free memory was 175.6MB in the beginning and 172.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 104 PlacesBefore, 27 PlacesAfterwards, 104 TransitionsBefore, 22 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 8 FixpointIterations, 71 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 109 TotalNumberOfCompositions, 488 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 488, independent: 488, independent conditional: 0, independent unconditional: 488, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 184, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 488, independent: 304, independent conditional: 0, independent unconditional: 304, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 184, unknown conditional: 0, unknown unconditional: 184] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 65]: 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, 117 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: 6.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 318 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 287 IncrementalHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 21 mSDtfsCounter, 287 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 22:13:28,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d19882-0590-4718-aaa7-762c59600124/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE