./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.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_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/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_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/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_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/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 a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:12:17,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:12:17,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:12:17,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:12:17,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:12:17,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:12:17,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:12:17,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:12:17,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:12:17,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:12:17,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:12:17,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:12:17,379 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:12:17,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:12:17,382 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:12:17,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:12:17,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:12:17,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:12:17,383 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:12:17,384 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:12:17,384 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:12:17,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:12:17,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:12:17,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:12:17,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:12:17,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:12:17,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:12:17,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:12:17,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:12:17,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:17,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:12:17,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:12:17,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:12:17,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:12:17,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:12:17,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:12:17,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:12:17,393 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:12:17,394 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_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2023-11-06 22:12:17,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:12:17,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:12:17,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:12:17,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:12:17,771 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:12:17,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2023-11-06 22:12:20,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:12:21,130 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:12:21,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2023-11-06 22:12:21,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/data/3a4c6b413/6f7203aee41145b18f129678c1f9a35a/FLAG553e5e05a [2023-11-06 22:12:21,154 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/data/3a4c6b413/6f7203aee41145b18f129678c1f9a35a [2023-11-06 22:12:21,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:12:21,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:12:21,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:21,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:12:21,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:12:21,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70be4301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21, skipping insertion in model container [2023-11-06 22:12:21,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:12:21,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:21,420 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:12:21,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:21,462 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:12:21,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21 WrapperNode [2023-11-06 22:12:21,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:21,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:21,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:12:21,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:12:21,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,514 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 183 [2023-11-06 22:12:21,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:21,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:12:21,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:12:21,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:12:21,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:12:21,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:12:21,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:12:21,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:12:21,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (1/1) ... [2023-11-06 22:12:21,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:21,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:21,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:12:21,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:12:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:12:21,638 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:12:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:12:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:12:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:12:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:12:21,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:12:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:12:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:12:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:12:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:12:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:12:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:12:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:12:21,643 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 22:12:21,790 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:12:21,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:12:22,255 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:12:22,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:12:22,267 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:12:22,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:22 BoogieIcfgContainer [2023-11-06 22:12:22,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:12:22,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:12:22,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:12:22,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:12:22,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:21" (1/3) ... [2023-11-06 22:12:22,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49afb2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:22, skipping insertion in model container [2023-11-06 22:12:22,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:21" (2/3) ... [2023-11-06 22:12:22,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49afb2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:22, skipping insertion in model container [2023-11-06 22:12:22,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:22" (3/3) ... [2023-11-06 22:12:22,280 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2023-11-06 22:12:22,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:12:22,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:12:22,302 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:12:22,503 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:12:22,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 253 transitions, 527 flow [2023-11-06 22:12:22,726 INFO L124 PetriNetUnfolderBase]: 17/250 cut-off events. [2023-11-06 22:12:22,727 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:12:22,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 17/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 555 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2023-11-06 22:12:22,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 253 transitions, 527 flow [2023-11-06 22:12:22,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 245 transitions, 508 flow [2023-11-06 22:12:22,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:12:22,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 245 transitions, 508 flow [2023-11-06 22:12:22,779 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 245 transitions, 508 flow [2023-11-06 22:12:22,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 245 transitions, 508 flow [2023-11-06 22:12:22,874 INFO L124 PetriNetUnfolderBase]: 17/245 cut-off events. [2023-11-06 22:12:22,875 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:12:22,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 245 events. 17/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 554 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2023-11-06 22:12:22,895 INFO L119 LiptonReduction]: Number of co-enabled transitions 17010 [2023-11-06 22:12:32,930 INFO L134 LiptonReduction]: Checked pairs total: 15839 [2023-11-06 22:12:32,930 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-11-06 22:12:32,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:12:32,954 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;@5e5bb380, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:12:32,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:12:32,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:12:32,957 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:12:32,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:32,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:32,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:12:32,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:32,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1048, now seen corresponding path program 1 times [2023-11-06 22:12:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:32,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457285353] [2023-11-06 22:12:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:33,078 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 22:12:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457285353] [2023-11-06 22:12:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457285353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:12:33,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704455176] [2023-11-06 22:12:33,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:33,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:12:33,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:12:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:12:33,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 559 [2023-11-06 22:12:33,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 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 22:12:33,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:33,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 559 [2023-11-06 22:12:33,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:33,277 INFO L124 PetriNetUnfolderBase]: 81/164 cut-off events. [2023-11-06 22:12:33,277 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 22:12:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 463 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-11-06 22:12:33,280 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-06 22:12:33,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-11-06 22:12:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:12:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:12:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 505 transitions. [2023-11-06 22:12:33,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516994633273703 [2023-11-06 22:12:33,307 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 505 transitions. [2023-11-06 22:12:33,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 505 transitions. [2023-11-06 22:12:33,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:33,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 505 transitions. [2023-11-06 22:12:33,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 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 22:12:33,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 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 22:12:33,330 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 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 22:12:33,332 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 505 transitions. [2023-11-06 22:12:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-11-06 22:12:33,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:12:33,339 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-11-06 22:12:33,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-06 22:12:33,345 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-06 22:12:33,346 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-11-06 22:12:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 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 22:12:33,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:33,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:12:33,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:12:33,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:33,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1028136, now seen corresponding path program 1 times [2023-11-06 22:12:33,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343033626] [2023-11-06 22:12:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:33,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:33,642 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 22:12:33,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:33,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343033626] [2023-11-06 22:12:33,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343033626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:33,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:33,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:33,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357950323] [2023-11-06 22:12:33,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:33,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:33,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 559 [2023-11-06 22:12:33,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 22:12:33,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:33,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 559 [2023-11-06 22:12:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:33,787 INFO L124 PetriNetUnfolderBase]: 76/153 cut-off events. [2023-11-06 22:12:33,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:33,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 419 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-11-06 22:12:33,789 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 22:12:33,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-11-06 22:12:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-11-06 22:12:33,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215861657722123 [2023-11-06 22:12:33,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-11-06 22:12:33,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-11-06 22:12:33,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:33,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-11-06 22:12:33,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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 22:12:33,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:33,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:33,804 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 707 transitions. [2023-11-06 22:12:33,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-11-06 22:12:33,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:12:33,806 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-11-06 22:12:33,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-06 22:12:33,808 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-06 22:12:33,808 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-11-06 22:12:33,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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 22:12:33,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:33,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:12:33,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:12:33,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:33,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1028134, now seen corresponding path program 1 times [2023-11-06 22:12:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:33,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095890304] [2023-11-06 22:12:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:33,969 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 22:12:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095890304] [2023-11-06 22:12:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095890304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:33,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611343310] [2023-11-06 22:12:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:33,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:34,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 559 [2023-11-06 22:12:34,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 22:12:34,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:34,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 559 [2023-11-06 22:12:34,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:34,101 INFO L124 PetriNetUnfolderBase]: 71/142 cut-off events. [2023-11-06 22:12:34,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:34,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 381 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-11-06 22:12:34,103 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-06 22:12:34,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-11-06 22:12:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2023-11-06 22:12:34,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293381037567084 [2023-11-06 22:12:34,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2023-11-06 22:12:34,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2023-11-06 22:12:34,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:34,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2023-11-06 22:12:34,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 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 22:12:34,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,118 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 720 transitions. [2023-11-06 22:12:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-11-06 22:12:34,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:34,119 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-11-06 22:12:34,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-06 22:12:34,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-11-06 22:12:34,121 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-11-06 22:12:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 22:12:34,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:34,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:12:34,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:12:34,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:34,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 988060805, now seen corresponding path program 1 times [2023-11-06 22:12:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329869830] [2023-11-06 22:12:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:34,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:34,192 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 22:12:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329869830] [2023-11-06 22:12:34,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329869830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:34,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:34,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:34,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571781421] [2023-11-06 22:12:34,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:34,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:34,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 559 [2023-11-06 22:12:34,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 22:12:34,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:34,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 559 [2023-11-06 22:12:34,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:34,337 INFO L124 PetriNetUnfolderBase]: 66/131 cut-off events. [2023-11-06 22:12:34,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:34,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 340 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-11-06 22:12:34,339 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-06 22:12:34,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-11-06 22:12:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-11-06 22:12:34,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419200954084675 [2023-11-06 22:12:34,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-11-06 22:12:34,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-11-06 22:12:34,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:34,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-11-06 22:12:34,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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 22:12:34,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,356 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 703 transitions. [2023-11-06 22:12:34,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-11-06 22:12:34,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:34,357 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-11-06 22:12:34,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-06 22:12:34,359 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-11-06 22:12:34,359 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-11-06 22:12:34,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 22:12:34,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:34,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:12:34,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:12:34,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:34,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash 988060807, now seen corresponding path program 1 times [2023-11-06 22:12:34,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:34,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612460341] [2023-11-06 22:12:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:34,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:34,431 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 22:12:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:34,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612460341] [2023-11-06 22:12:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612460341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:34,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900524415] [2023-11-06 22:12:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:34,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 559 [2023-11-06 22:12:34,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 22:12:34,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:34,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 559 [2023-11-06 22:12:34,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:34,542 INFO L124 PetriNetUnfolderBase]: 61/120 cut-off events. [2023-11-06 22:12:34,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:34,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 296 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-11-06 22:12:34,544 INFO L140 encePairwiseOnDemand]: 556/559 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-11-06 22:12:34,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-11-06 22:12:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2023-11-06 22:12:34,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42695289206917114 [2023-11-06 22:12:34,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2023-11-06 22:12:34,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2023-11-06 22:12:34,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:34,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2023-11-06 22:12:34,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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 22:12:34,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,558 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 716 transitions. [2023-11-06 22:12:34,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-11-06 22:12:34,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:34,560 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-11-06 22:12:34,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-06 22:12:34,561 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 22:12:34,561 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-11-06 22:12:34,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 22:12:34,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:34,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:12:34,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:34,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 338685096, now seen corresponding path program 1 times [2023-11-06 22:12:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:34,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627612810] [2023-11-06 22:12:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:34,668 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 22:12:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:34,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627612810] [2023-11-06 22:12:34,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627612810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:34,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:34,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:12:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721911235] [2023-11-06 22:12:34,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:34,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:34,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 559 [2023-11-06 22:12:34,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 220.4) internal successors, (1102), 5 states have internal predecessors, (1102), 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 22:12:34,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:34,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 559 [2023-11-06 22:12:34,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:34,868 INFO L124 PetriNetUnfolderBase]: 49/100 cut-off events. [2023-11-06 22:12:34,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-11-06 22:12:34,870 INFO L140 encePairwiseOnDemand]: 557/559 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:12:34,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-11-06 22:12:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-11-06 22:12:34,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40250447227191416 [2023-11-06 22:12:34,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-11-06 22:12:34,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-11-06 22:12:34,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:34,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-11-06 22:12:34,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 22:12:34,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:34,883 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 675 transitions. [2023-11-06 22:12:34,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-11-06 22:12:34,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:34,885 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-11-06 22:12:34,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-11-06 22:12:34,890 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 22:12:34,893 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-11-06 22:12:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.4) internal successors, (1102), 5 states have internal predecessors, (1102), 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 22:12:34,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:34,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:34,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:12:34,896 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:34,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 338685094, now seen corresponding path program 1 times [2023-11-06 22:12:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84860488] [2023-11-06 22:12:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:34,940 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 22:12:34,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84860488] [2023-11-06 22:12:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84860488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:34,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741493672] [2023-11-06 22:12:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:34,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:34,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:34,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 559 [2023-11-06 22:12:34,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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 22:12:35,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:35,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 559 [2023-11-06 22:12:35,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:35,057 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2023-11-06 22:12:35,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:35,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-11-06 22:12:35,058 INFO L140 encePairwiseOnDemand]: 557/559 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-06 22:12:35,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-11-06 22:12:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2023-11-06 22:12:35,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180083482409064 [2023-11-06 22:12:35,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2023-11-06 22:12:35,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2023-11-06 22:12:35,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:35,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2023-11-06 22:12:35,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 22:12:35,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:35,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 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 22:12:35,074 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 701 transitions. [2023-11-06 22:12:35,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-11-06 22:12:35,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:35,077 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-11-06 22:12:35,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-11-06 22:12:35,078 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 22:12:35,078 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-11-06 22:12:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 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 22:12:35,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:35,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:12:35,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:35,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -829775634, now seen corresponding path program 1 times [2023-11-06 22:12:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135032030] [2023-11-06 22:12:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:38,346 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 22:12:38,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:38,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135032030] [2023-11-06 22:12:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135032030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:12:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040932443] [2023-11-06 22:12:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:38,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:12:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:12:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:12:39,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 559 [2023-11-06 22:12:39,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 7 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 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 22:12:39,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:39,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 559 [2023-11-06 22:12:39,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:39,636 INFO L124 PetriNetUnfolderBase]: 40/106 cut-off events. [2023-11-06 22:12:39,636 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:12:39,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 327 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-11-06 22:12:39,637 INFO L140 encePairwiseOnDemand]: 554/559 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-11-06 22:12:39,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 203 flow [2023-11-06 22:12:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:12:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:12:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1467 transitions. [2023-11-06 22:12:39,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37490416560184003 [2023-11-06 22:12:39,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1467 transitions. [2023-11-06 22:12:39,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1467 transitions. [2023-11-06 22:12:39,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:39,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1467 transitions. [2023-11-06 22:12:39,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.57142857142858) internal successors, (1467), 7 states have internal predecessors, (1467), 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 22:12:39,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 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 22:12:39,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 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 22:12:39,658 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 7 states and 1467 transitions. [2023-11-06 22:12:39,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 203 flow [2023-11-06 22:12:39,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:39,660 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 77 flow [2023-11-06 22:12:39,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-11-06 22:12:39,661 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-11-06 22:12:39,661 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 77 flow [2023-11-06 22:12:39,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 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 22:12:39,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:39,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:39,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:12:39,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:39,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1543849088, now seen corresponding path program 2 times [2023-11-06 22:12:39,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:39,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901936720] [2023-11-06 22:12:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:39,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:41,281 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 22:12:41,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:41,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901936720] [2023-11-06 22:12:41,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901936720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:41,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351089054] [2023-11-06 22:12:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:41,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 559 [2023-11-06 22:12:41,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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 22:12:41,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:41,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 559 [2023-11-06 22:12:41,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:41,915 INFO L124 PetriNetUnfolderBase]: 36/114 cut-off events. [2023-11-06 22:12:41,915 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-06 22:12:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 403 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2023-11-06 22:12:41,916 INFO L140 encePairwiseOnDemand]: 554/559 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-11-06 22:12:41,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 227 flow [2023-11-06 22:12:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1352 transitions. [2023-11-06 22:12:41,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2023-11-06 22:12:41,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1352 transitions. [2023-11-06 22:12:41,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1352 transitions. [2023-11-06 22:12:41,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:41,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1352 transitions. [2023-11-06 22:12:41,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.33333333333334) internal successors, (1352), 6 states have internal predecessors, (1352), 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 22:12:41,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:41,936 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:41,936 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 77 flow. Second operand 6 states and 1352 transitions. [2023-11-06 22:12:41,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 227 flow [2023-11-06 22:12:41,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 222 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:41,942 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 94 flow [2023-11-06 22:12:41,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-11-06 22:12:41,944 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-06 22:12:41,944 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 94 flow [2023-11-06 22:12:41,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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 22:12:41,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:41,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:41,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:12:41,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:41,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:41,947 INFO L85 PathProgramCache]: Analyzing trace with hash -759478642, now seen corresponding path program 3 times [2023-11-06 22:12:41,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:41,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012722465] [2023-11-06 22:12:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:44,341 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 22:12:44,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:44,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012722465] [2023-11-06 22:12:44,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012722465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:44,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:44,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:12:44,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091528861] [2023-11-06 22:12:44,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:44,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:12:44,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:12:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:12:44,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 559 [2023-11-06 22:12:44,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 states have internal predecessors, (1264), 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 22:12:44,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:44,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 559 [2023-11-06 22:12:44,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:45,464 INFO L124 PetriNetUnfolderBase]: 20/70 cut-off events. [2023-11-06 22:12:45,465 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-06 22:12:45,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 187 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2023-11-06 22:12:45,466 INFO L140 encePairwiseOnDemand]: 554/559 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-11-06 22:12:45,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 238 flow [2023-11-06 22:12:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:12:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:12:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1498 transitions. [2023-11-06 22:12:45,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828264758497317 [2023-11-06 22:12:45,473 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1498 transitions. [2023-11-06 22:12:45,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1498 transitions. [2023-11-06 22:12:45,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:45,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1498 transitions. [2023-11-06 22:12:45,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 214.0) internal successors, (1498), 7 states have internal predecessors, (1498), 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 22:12:45,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 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 22:12:45,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 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 22:12:45,489 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 94 flow. Second operand 7 states and 1498 transitions. [2023-11-06 22:12:45,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 238 flow [2023-11-06 22:12:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 213 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-06 22:12:45,491 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 93 flow [2023-11-06 22:12:45,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-11-06 22:12:45,492 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-11-06 22:12:45,493 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 93 flow [2023-11-06 22:12:45,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 states have internal predecessors, (1264), 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 22:12:45,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:45,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:45,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:12:45,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:45,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1622293624, now seen corresponding path program 4 times [2023-11-06 22:12:45,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:45,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323226565] [2023-11-06 22:12:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:45,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:47,324 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 22:12:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323226565] [2023-11-06 22:12:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323226565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:47,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:47,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491378693] [2023-11-06 22:12:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:47,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:47,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:47,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 559 [2023-11-06 22:12:47,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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 22:12:47,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:47,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 559 [2023-11-06 22:12:47,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:48,237 INFO L124 PetriNetUnfolderBase]: 15/67 cut-off events. [2023-11-06 22:12:48,237 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:12:48,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 67 events. 15/67 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 220. Up to 41 conditions per place. [2023-11-06 22:12:48,238 INFO L140 encePairwiseOnDemand]: 554/559 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-11-06 22:12:48,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 200 flow [2023-11-06 22:12:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1348 transitions. [2023-11-06 22:12:48,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019081693500298 [2023-11-06 22:12:48,245 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1348 transitions. [2023-11-06 22:12:48,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1348 transitions. [2023-11-06 22:12:48,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:48,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1348 transitions. [2023-11-06 22:12:48,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.66666666666666) internal successors, (1348), 6 states have internal predecessors, (1348), 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 22:12:48,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:48,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:48,277 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 93 flow. Second operand 6 states and 1348 transitions. [2023-11-06 22:12:48,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 200 flow [2023-11-06 22:12:48,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 194 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:48,279 INFO L231 Difference]: Finished difference. Result has 44 places, 18 transitions, 86 flow [2023-11-06 22:12:48,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=44, PETRI_TRANSITIONS=18} [2023-11-06 22:12:48,281 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-11-06 22:12:48,281 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 18 transitions, 86 flow [2023-11-06 22:12:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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 22:12:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:48,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:12:48,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:48,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash -877591126, now seen corresponding path program 5 times [2023-11-06 22:12:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321921492] [2023-11-06 22:12:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:48,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:50,234 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 22:12:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321921492] [2023-11-06 22:12:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321921492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:50,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954889553] [2023-11-06 22:12:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:50,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 559 [2023-11-06 22:12:50,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 18 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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 22:12:50,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:50,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 559 [2023-11-06 22:12:50,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:50,975 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2023-11-06 22:12:50,975 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 22:12:50,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 37 events. 7/37 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 127. Up to 14 conditions per place. [2023-11-06 22:12:50,976 INFO L140 encePairwiseOnDemand]: 554/559 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-11-06 22:12:50,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 166 flow [2023-11-06 22:12:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-11-06 22:12:50,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983303518187239 [2023-11-06 22:12:50,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-11-06 22:12:50,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-11-06 22:12:50,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:50,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-11-06 22:12:50,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 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 22:12:50,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:50,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:50,994 INFO L175 Difference]: Start difference. First operand has 44 places, 18 transitions, 86 flow. Second operand 6 states and 1336 transitions. [2023-11-06 22:12:50,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 166 flow [2023-11-06 22:12:50,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 144 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-06 22:12:50,996 INFO L231 Difference]: Finished difference. Result has 39 places, 16 transitions, 59 flow [2023-11-06 22:12:50,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=59, PETRI_PLACES=39, PETRI_TRANSITIONS=16} [2023-11-06 22:12:50,997 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-11-06 22:12:50,997 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 16 transitions, 59 flow [2023-11-06 22:12:50,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 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 22:12:50,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:50,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:12:50,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:12:50,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2006415710, now seen corresponding path program 6 times [2023-11-06 22:12:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858090551] [2023-11-06 22:12:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:52,729 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 22:12:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858090551] [2023-11-06 22:12:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858090551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993305459] [2023-11-06 22:12:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:52,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:52,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:53,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 559 [2023-11-06 22:12:53,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 16 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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 22:12:53,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:53,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 559 [2023-11-06 22:12:53,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:53,261 INFO L124 PetriNetUnfolderBase]: 5/25 cut-off events. [2023-11-06 22:12:53,261 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:12:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 25 events. 5/25 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 84. Up to 10 conditions per place. [2023-11-06 22:12:53,262 INFO L140 encePairwiseOnDemand]: 554/559 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-11-06 22:12:53,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 20 transitions, 106 flow [2023-11-06 22:12:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1335 transitions. [2023-11-06 22:12:53,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803220035778175 [2023-11-06 22:12:53,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1335 transitions. [2023-11-06 22:12:53,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1335 transitions. [2023-11-06 22:12:53,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:53,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1335 transitions. [2023-11-06 22:12:53,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 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 22:12:53,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:53,279 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 559.0) internal successors, (3913), 7 states have internal predecessors, (3913), 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 22:12:53,279 INFO L175 Difference]: Start difference. First operand has 39 places, 16 transitions, 59 flow. Second operand 6 states and 1335 transitions. [2023-11-06 22:12:53,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 20 transitions, 106 flow [2023-11-06 22:12:53,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 20 transitions, 96 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 22:12:53,281 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-06 22:12:53,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-06 22:12:53,281 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-11-06 22:12:53,282 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-06 22:12:53,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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 22:12:53,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-06 22:12:53,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-06 22:12:53,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-06 22:12:53,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-06 22:12:53,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-06 22:12:53,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-06 22:12:53,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-06 22:12:53,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-06 22:12:53,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-06 22:12:53,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-06 22:12:53,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-06 22:12:53,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-06 22:12:53,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-06 22:12:53,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-06 22:12:53,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-06 22:12:53,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-06 22:12:53,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-06 22:12:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:12:53,289 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:53,292 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:12:53,292 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:12:53,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:12:53 BasicIcfg [2023-11-06 22:12:53,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:12:53,297 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:12:53,297 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:12:53,297 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:12:53,298 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:22" (3/4) ... [2023-11-06 22:12:53,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:12:53,304 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:12:53,304 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:12:53,304 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:12:53,310 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-06 22:12:53,311 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:12:53,311 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:12:53,311 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:12:53,384 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:12:53,385 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:12:53,385 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:12:53,386 INFO L158 Benchmark]: Toolchain (without parser) took 32227.53ms. Allocated memory was 140.5MB in the beginning and 446.7MB in the end (delta: 306.2MB). Free memory was 104.8MB in the beginning and 280.5MB in the end (delta: -175.7MB). Peak memory consumption was 132.6MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,386 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory was 61.0MB in the beginning and 60.9MB in the end (delta: 151.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:12:53,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.38ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 92.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.38ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 90.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,387 INFO L158 Benchmark]: Boogie Preprocessor took 33.60ms. Allocated memory is still 140.5MB. Free memory was 90.5MB in the beginning and 88.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,388 INFO L158 Benchmark]: RCFGBuilder took 721.24ms. Allocated memory is still 140.5MB. Free memory was 88.8MB in the beginning and 67.5MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,388 INFO L158 Benchmark]: TraceAbstraction took 31023.60ms. Allocated memory was 140.5MB in the beginning and 446.7MB in the end (delta: 306.2MB). Free memory was 66.8MB in the beginning and 284.7MB in the end (delta: -218.0MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,388 INFO L158 Benchmark]: Witness Printer took 88.15ms. Allocated memory is still 446.7MB. Free memory was 283.7MB in the beginning and 280.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:12:53,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory was 61.0MB in the beginning and 60.9MB in the end (delta: 151.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.38ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 92.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.38ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 90.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.60ms. Allocated memory is still 140.5MB. Free memory was 90.5MB in the beginning and 88.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 721.24ms. Allocated memory is still 140.5MB. Free memory was 88.8MB in the beginning and 67.5MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 31023.60ms. Allocated memory was 140.5MB in the beginning and 446.7MB in the end (delta: 306.2MB). Free memory was 66.8MB in the beginning and 284.7MB in the end (delta: -218.0MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. * Witness Printer took 88.15ms. Allocated memory is still 446.7MB. Free memory was 283.7MB in the beginning and 280.5MB 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: 10.2s, 238 PlacesBefore, 39 PlacesAfterwards, 245 TransitionsBefore, 29 TransitionsAfterwards, 17010 CoEnabledTransitionPairs, 7 FixpointIterations, 78 TrivialSequentialCompositions, 145 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 58 ConcurrentYvCompositions, 17 ChoiceCompositions, 306 TotalNumberOfCompositions, 15839 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15839, independent: 15839, independent conditional: 0, independent unconditional: 15839, 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: 10432, independent: 10432, independent conditional: 0, independent unconditional: 10432, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15839, independent: 5407, independent conditional: 0, independent unconditional: 5407, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 10432, unknown conditional: 0, unknown unconditional: 10432] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, 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: -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: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 363 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1955 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1251 mSDsluCounter, 944 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 834 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2624 IncrementalHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 110 mSDtfsCounter, 2624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=9, 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, 0.4s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3573 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:12:53,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2e9f93-aaa5-419f-8945-ad2f3145ad6c/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