./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1-alt.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_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/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_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/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_58867dce-d714-4654-aec0-37c9e999e30d/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 fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:01:54,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:01:54,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:01:54,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:01:54,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:01:54,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:01:54,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:01:54,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:01:54,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:01:54,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:01:54,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:01:54,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:01:54,206 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:01:54,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:01:54,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:01:54,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:01:54,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:01:54,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:01:54,210 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:01:54,211 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:01:54,211 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:01:54,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:01:54,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:01:54,213 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:01:54,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:01:54,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:01:54,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:01:54,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:01:54,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:01:54,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:54,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:01:54,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:01:54,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:01:54,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:01:54,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:01:54,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:01:54,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:01:54,220 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:01:54,220 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_58867dce-d714-4654-aec0-37c9e999e30d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 [2023-11-06 22:01:54,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:01:54,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:01:54,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:01:54,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:01:54,615 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:01:54,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2023-11-06 22:01:57,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:01:57,920 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:01:57,920 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2023-11-06 22:01:57,929 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/data/d07100534/bade3b231a744163968bb183c08cdb40/FLAG35be77ce4 [2023-11-06 22:01:57,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/data/d07100534/bade3b231a744163968bb183c08cdb40 [2023-11-06 22:01:57,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:01:57,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:01:57,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:57,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:01:57,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:01:57,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:57" (1/1) ... [2023-11-06 22:01:57,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9ebdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:57, skipping insertion in model container [2023-11-06 22:01:57,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:57" (1/1) ... [2023-11-06 22:01:58,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:01:58,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:58,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:01:58,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:01:58,249 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:58,250 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:01:58,258 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:01:58,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58 WrapperNode [2023-11-06 22:01:58,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:01:58,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:58,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:01:58,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:01:58,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,298 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 80 [2023-11-06 22:01:58,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:01:58,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:01:58,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:01:58,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:01:58,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:01:58,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:01:58,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:01:58,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:01:58,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (1/1) ... [2023-11-06 22:01:58,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:01:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:01:58,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:01:58,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:01:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:01:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:01:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:01:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:01:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:01:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:01:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:01:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:01:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:01:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:01:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:01:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:01:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:01:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:01:58,423 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 22:01:58,581 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:01:58,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:01:58,919 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:01:58,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:01:58,973 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:01:58,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:58 BoogieIcfgContainer [2023-11-06 22:01:58,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:01:58,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:01:58,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:01:58,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:01:58,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:01:57" (1/3) ... [2023-11-06 22:01:58,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a95f5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:58, skipping insertion in model container [2023-11-06 22:01:58,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:58" (2/3) ... [2023-11-06 22:01:58,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a95f5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:58, skipping insertion in model container [2023-11-06 22:01:58,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:58" (3/3) ... [2023-11-06 22:01:58,986 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-11-06 22:01:59,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:01:59,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:01:59,003 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:01:59,068 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:01:59,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 104 transitions, 222 flow [2023-11-06 22:01:59,162 INFO L124 PetriNetUnfolderBase]: 6/102 cut-off events. [2023-11-06 22:01:59,163 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:01:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 6/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-06 22:01:59,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 104 transitions, 222 flow [2023-11-06 22:01:59,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 97 transitions, 206 flow [2023-11-06 22:01:59,182 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:01:59,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 97 transitions, 206 flow [2023-11-06 22:01:59,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 97 transitions, 206 flow [2023-11-06 22:01:59,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 97 transitions, 206 flow [2023-11-06 22:01:59,241 INFO L124 PetriNetUnfolderBase]: 6/97 cut-off events. [2023-11-06 22:01:59,241 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:01:59,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 6/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-06 22:01:59,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-11-06 22:02:02,704 INFO L134 LiptonReduction]: Checked pairs total: 862 [2023-11-06 22:02:02,704 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-11-06 22:02:02,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:02:02,746 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;@4559bb6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:02:02,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 22:02:02,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:02:02,748 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:02:02,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:02:02,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:02,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:02:02,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:02,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:02,755 INFO L85 PathProgramCache]: Analyzing trace with hash 419, now seen corresponding path program 1 times [2023-11-06 22:02:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657670104] [2023-11-06 22:02:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:02,858 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 22:02:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657670104] [2023-11-06 22:02:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657670104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:02,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:02:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344774690] [2023-11-06 22:02:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:02,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:02:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:02:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:02:02,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-11-06 22:02:02,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 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 22:02:02,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:02,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-11-06 22:02:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:03,017 INFO L124 PetriNetUnfolderBase]: 106/169 cut-off events. [2023-11-06 22:02:03,017 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:02:03,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 169 events. 106/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 547 event pairs, 45 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 277. Up to 167 conditions per place. [2023-11-06 22:02:03,022 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-11-06 22:02:03,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2023-11-06 22:02:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:02:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:02:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-11-06 22:02:03,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048543689320388 [2023-11-06 22:02:03,042 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-11-06 22:02:03,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-11-06 22:02:03,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:03,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-11-06 22:02:03,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 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 22:02:03,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 22:02:03,060 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 22:02:03,063 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 208 transitions. [2023-11-06 22:02:03,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2023-11-06 22:02:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:02:03,070 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-11-06 22:02:03,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-11-06 22:02:03,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-11-06 22:02:03,078 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-11-06 22:02:03,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 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 22:02:03,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:03,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:02:03,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:02:03,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:03,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash 412789, now seen corresponding path program 1 times [2023-11-06 22:02:03,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:03,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514958657] [2023-11-06 22:02:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:03,239 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 22:02:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514958657] [2023-11-06 22:02:03,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514958657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:03,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:03,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:02:03,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390889851] [2023-11-06 22:02:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:03,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:03,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:03,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-11-06 22:02:03,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-11-06 22:02:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:03,335 INFO L124 PetriNetUnfolderBase]: 99/156 cut-off events. [2023-11-06 22:02:03,335 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:02:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 156 events. 99/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 489 event pairs, 42 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-11-06 22:02:03,337 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-11-06 22:02:03,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-11-06 22:02:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-06 22:02:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336569579288026 [2023-11-06 22:02:03,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-06 22:02:03,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-06 22:02:03,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:03,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-06 22:02:03,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 22:02:03,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:03,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:03,347 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 268 transitions. [2023-11-06 22:02:03,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-11-06 22:02:03,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:02:03,349 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-11-06 22:02:03,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-06 22:02:03,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-11-06 22:02:03,350 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-11-06 22:02:03,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:03,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:02:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:02:03,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:03,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 412790, now seen corresponding path program 1 times [2023-11-06 22:02:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:03,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073911006] [2023-11-06 22:02:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:03,511 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 22:02:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073911006] [2023-11-06 22:02:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073911006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:03,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:02:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647141235] [2023-11-06 22:02:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:03,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:03,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-11-06 22:02:03,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 22:02:03,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:03,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-11-06 22:02:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:03,625 INFO L124 PetriNetUnfolderBase]: 92/143 cut-off events. [2023-11-06 22:02:03,625 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:02:03,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 92/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 429 event pairs, 39 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 288. Up to 140 conditions per place. [2023-11-06 22:02:03,630 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:02:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2023-11-06 22:02:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-11-06 22:02:03,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44983818770226536 [2023-11-06 22:02:03,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-11-06 22:02:03,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-11-06 22:02:03,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:03,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-11-06 22:02:03,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 22:02:03,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:03,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:03,644 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 278 transitions. [2023-11-06 22:02:03,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2023-11-06 22:02:03,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:03,646 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-11-06 22:02:03,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-06 22:02:03,648 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-06 22:02:03,648 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-11-06 22:02:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 22:02:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:03,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:02:03,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:02:03,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:03,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:03,657 INFO L85 PathProgramCache]: Analyzing trace with hash 396701371, now seen corresponding path program 1 times [2023-11-06 22:02:03,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834790868] [2023-11-06 22:02:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:03,779 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 22:02:03,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834790868] [2023-11-06 22:02:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834790868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:03,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:02:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618015304] [2023-11-06 22:02:03,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:03,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:02:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:03,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:02:03,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:02:03,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 206 [2023-11-06 22:02:03,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:03,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 206 [2023-11-06 22:02:03,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:03,897 INFO L124 PetriNetUnfolderBase]: 70/112 cut-off events. [2023-11-06 22:02:03,897 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:02:03,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 112 events. 70/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 300 event pairs, 29 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 227. Up to 109 conditions per place. [2023-11-06 22:02:03,899 INFO L140 encePairwiseOnDemand]: 204/206 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-06 22:02:03,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2023-11-06 22:02:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-11-06 22:02:03,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077669902912621 [2023-11-06 22:02:03,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-11-06 22:02:03,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-11-06 22:02:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:03,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-11-06 22:02:03,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:03,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:03,907 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 252 transitions. [2023-11-06 22:02:03,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2023-11-06 22:02:03,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:03,909 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-11-06 22:02:03,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-11-06 22:02:03,910 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-06 22:02:03,910 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-11-06 22:02:03,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:02:03,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:03,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:02:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:02:03,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:03,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 396701372, now seen corresponding path program 1 times [2023-11-06 22:02:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601288702] [2023-11-06 22:02:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:03,967 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 22:02:03,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:03,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601288702] [2023-11-06 22:02:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601288702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:03,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:03,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:02:03,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268029650] [2023-11-06 22:02:03,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:03,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:02:03,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:03,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:02:03,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:02:04,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-11-06 22:02:04,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 22:02:04,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:04,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-11-06 22:02:04,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:04,062 INFO L124 PetriNetUnfolderBase]: 48/81 cut-off events. [2023-11-06 22:02:04,063 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:02:04,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 48/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 19 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 166. Up to 78 conditions per place. [2023-11-06 22:02:04,064 INFO L140 encePairwiseOnDemand]: 204/206 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-06 22:02:04,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2023-11-06 22:02:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:02:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:02:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-11-06 22:02:04,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43042071197411 [2023-11-06 22:02:04,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-11-06 22:02:04,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-11-06 22:02:04,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:04,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-11-06 22:02:04,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 22:02:04,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:04,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 22:02:04,071 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 266 transitions. [2023-11-06 22:02:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2023-11-06 22:02:04,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:04,073 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-11-06 22:02:04,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-11-06 22:02:04,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-06 22:02:04,077 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-11-06 22:02:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 22:02:04,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:04,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:02:04,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:04,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1765438619, now seen corresponding path program 1 times [2023-11-06 22:02:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:04,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465034349] [2023-11-06 22:02:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:04,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:04,452 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 22:02:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465034349] [2023-11-06 22:02:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465034349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:04,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:04,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198945324] [2023-11-06 22:02:04,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:04,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:04,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:04,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:04,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:04,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-11-06 22:02:04,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:04,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:04,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-11-06 22:02:04,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:04,684 INFO L124 PetriNetUnfolderBase]: 62/128 cut-off events. [2023-11-06 22:02:04,684 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:02:04,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 128 events. 62/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 415 event pairs, 2 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 266. Up to 61 conditions per place. [2023-11-06 22:02:04,686 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 29 selfloop transitions, 4 changer transitions 11/44 dead transitions. [2023-11-06 22:02:04,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 44 transitions, 193 flow [2023-11-06 22:02:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-11-06 22:02:04,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42718446601941745 [2023-11-06 22:02:04,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-11-06 22:02:04,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-11-06 22:02:04,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:04,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-11-06 22:02:04,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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 22:02:04,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:04,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:04,702 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 616 transitions. [2023-11-06 22:02:04,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 44 transitions, 193 flow [2023-11-06 22:02:04,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:02:04,705 INFO L231 Difference]: Finished difference. Result has 32 places, 17 transitions, 74 flow [2023-11-06 22:02:04,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2023-11-06 22:02:04,708 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-06 22:02:04,708 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 74 flow [2023-11-06 22:02:04,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:04,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:04,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:04,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:02:04,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:04,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash -944968113, now seen corresponding path program 2 times [2023-11-06 22:02:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:04,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301125672] [2023-11-06 22:02:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:04,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:04,987 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 22:02:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301125672] [2023-11-06 22:02:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301125672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:04,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:04,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994543021] [2023-11-06 22:02:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:04,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:04,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:04,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:05,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-11-06 22:02:05,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:05,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:05,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-11-06 22:02:05,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:05,229 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2023-11-06 22:02:05,230 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:02:05,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 122 events. 58/122 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 345 event pairs, 14 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 377. Up to 63 conditions per place. [2023-11-06 22:02:05,231 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 29 selfloop transitions, 8 changer transitions 8/45 dead transitions. [2023-11-06 22:02:05,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 262 flow [2023-11-06 22:02:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-11-06 22:02:05,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251040221914008 [2023-11-06 22:02:05,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-11-06 22:02:05,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-11-06 22:02:05,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:05,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-11-06 22:02:05,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 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 22:02:05,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:05,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:05,243 INFO L175 Difference]: Start difference. First operand has 32 places, 17 transitions, 74 flow. Second operand 7 states and 613 transitions. [2023-11-06 22:02:05,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 262 flow [2023-11-06 22:02:05,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 235 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-06 22:02:05,247 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 116 flow [2023-11-06 22:02:05,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-11-06 22:02:05,248 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-06 22:02:05,248 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 116 flow [2023-11-06 22:02:05,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:05,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:05,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:05,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:02:05,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:05,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1654065703, now seen corresponding path program 3 times [2023-11-06 22:02:05,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:05,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083146895] [2023-11-06 22:02:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:05,514 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 22:02:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083146895] [2023-11-06 22:02:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083146895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443413239] [2023-11-06 22:02:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:05,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-11-06 22:02:05,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:05,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:05,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-11-06 22:02:05,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:05,794 INFO L124 PetriNetUnfolderBase]: 64/134 cut-off events. [2023-11-06 22:02:05,794 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-06 22:02:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 134 events. 64/134 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 402 event pairs, 17 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 453. Up to 65 conditions per place. [2023-11-06 22:02:05,797 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 27 selfloop transitions, 11 changer transitions 9/47 dead transitions. [2023-11-06 22:02:05,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 294 flow [2023-11-06 22:02:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2023-11-06 22:02:05,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237170596393897 [2023-11-06 22:02:05,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2023-11-06 22:02:05,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2023-11-06 22:02:05,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:05,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2023-11-06 22:02:05,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 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 22:02:05,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:05,810 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:05,810 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 116 flow. Second operand 7 states and 611 transitions. [2023-11-06 22:02:05,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 294 flow [2023-11-06 22:02:05,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 284 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:02:05,818 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 169 flow [2023-11-06 22:02:05,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2023-11-06 22:02:05,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-11-06 22:02:05,821 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 169 flow [2023-11-06 22:02:05,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:05,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:05,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:05,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:02:05,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:05,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1807202961, now seen corresponding path program 4 times [2023-11-06 22:02:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:05,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059950780] [2023-11-06 22:02:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:05,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:06,165 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 22:02:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059950780] [2023-11-06 22:02:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059950780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:06,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:06,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:06,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419268903] [2023-11-06 22:02:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:06,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:06,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-11-06 22:02:06,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:06,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:06,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-11-06 22:02:06,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:06,413 INFO L124 PetriNetUnfolderBase]: 59/125 cut-off events. [2023-11-06 22:02:06,413 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2023-11-06 22:02:06,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 125 events. 59/125 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 358 event pairs, 18 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 484. Up to 65 conditions per place. [2023-11-06 22:02:06,415 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 25 selfloop transitions, 12 changer transitions 9/46 dead transitions. [2023-11-06 22:02:06,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 342 flow [2023-11-06 22:02:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-11-06 22:02:06,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-11-06 22:02:06,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-11-06 22:02:06,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-11-06 22:02:06,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:06,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-11-06 22:02:06,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 22:02:06,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:06,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:06,425 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 169 flow. Second operand 7 states and 609 transitions. [2023-11-06 22:02:06,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 342 flow [2023-11-06 22:02:06,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 308 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 22:02:06,430 INFO L231 Difference]: Finished difference. Result has 46 places, 28 transitions, 200 flow [2023-11-06 22:02:06,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2023-11-06 22:02:06,431 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-11-06 22:02:06,431 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 200 flow [2023-11-06 22:02:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:06,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:06,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:06,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:02:06,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:06,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash -395501377, now seen corresponding path program 5 times [2023-11-06 22:02:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053861853] [2023-11-06 22:02:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:06,714 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 22:02:06,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:06,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053861853] [2023-11-06 22:02:06,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053861853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:06,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:06,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:06,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978421867] [2023-11-06 22:02:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:06,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:06,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:06,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-11-06 22:02:06,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:06,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:06,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-11-06 22:02:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:06,951 INFO L124 PetriNetUnfolderBase]: 57/121 cut-off events. [2023-11-06 22:02:06,951 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-11-06 22:02:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 121 events. 57/121 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 14 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 480. Up to 67 conditions per place. [2023-11-06 22:02:06,953 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 28 selfloop transitions, 13 changer transitions 5/46 dead transitions. [2023-11-06 22:02:06,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 350 flow [2023-11-06 22:02:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-11-06 22:02:06,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223300970873786 [2023-11-06 22:02:06,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-11-06 22:02:06,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-11-06 22:02:06,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:06,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-11-06 22:02:06,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 22:02:06,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:06,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:06,965 INFO L175 Difference]: Start difference. First operand has 46 places, 28 transitions, 200 flow. Second operand 7 states and 609 transitions. [2023-11-06 22:02:06,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 350 flow [2023-11-06 22:02:06,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 316 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:02:06,969 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 203 flow [2023-11-06 22:02:06,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2023-11-06 22:02:06,971 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-11-06 22:02:06,971 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 203 flow [2023-11-06 22:02:06,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:06,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:06,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:06,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:02:06,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:06,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1834908591, now seen corresponding path program 6 times [2023-11-06 22:02:06,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:06,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60298511] [2023-11-06 22:02:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:07,280 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 22:02:07,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:07,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60298511] [2023-11-06 22:02:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60298511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:07,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:07,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:02:07,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940235848] [2023-11-06 22:02:07,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:07,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:02:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:07,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:02:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:02:07,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-11-06 22:02:07,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:07,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:07,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-11-06 22:02:07,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:07,500 INFO L124 PetriNetUnfolderBase]: 56/114 cut-off events. [2023-11-06 22:02:07,500 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-11-06 22:02:07,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 114 events. 56/114 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 295 event pairs, 17 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 453. Up to 67 conditions per place. [2023-11-06 22:02:07,502 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 21 selfloop transitions, 13 changer transitions 8/42 dead transitions. [2023-11-06 22:02:07,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 328 flow [2023-11-06 22:02:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:02:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:02:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-11-06 22:02:07,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41955617198335643 [2023-11-06 22:02:07,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-11-06 22:02:07,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-11-06 22:02:07,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:07,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-11-06 22:02:07,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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 22:02:07,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:07,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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 22:02:07,513 INFO L175 Difference]: Start difference. First operand has 47 places, 29 transitions, 203 flow. Second operand 7 states and 605 transitions. [2023-11-06 22:02:07,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 328 flow [2023-11-06 22:02:07,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 298 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 22:02:07,516 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 192 flow [2023-11-06 22:02:07,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2023-11-06 22:02:07,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-06 22:02:07,517 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 192 flow [2023-11-06 22:02:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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 22:02:07,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:07,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:02:07,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:07,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash 107206958, now seen corresponding path program 1 times [2023-11-06 22:02:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620548387] [2023-11-06 22:02:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:07,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620548387] [2023-11-06 22:02:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620548387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572129528] [2023-11-06 22:02:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:07,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:07,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:07,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:02:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:07,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:07,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:08,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:08,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572129528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:08,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:08,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443081519] [2023-11-06 22:02:08,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:08,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:08,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:08,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:08,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 192 flow. Second operand has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:08,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:08,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:08,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:09,060 INFO L124 PetriNetUnfolderBase]: 140/296 cut-off events. [2023-11-06 22:02:09,060 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-11-06 22:02:09,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 296 events. 140/296 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1248 event pairs, 10 based on Foata normal form. 17/285 useless extension candidates. Maximal degree in co-relation 939. Up to 101 conditions per place. [2023-11-06 22:02:09,064 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 67 selfloop transitions, 24 changer transitions 25/116 dead transitions. [2023-11-06 22:02:09,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 116 transitions, 711 flow [2023-11-06 22:02:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:02:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:02:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1517 transitions. [2023-11-06 22:02:09,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091154261057174 [2023-11-06 22:02:09,071 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1517 transitions. [2023-11-06 22:02:09,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1517 transitions. [2023-11-06 22:02:09,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:09,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1517 transitions. [2023-11-06 22:02:09,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.27777777777777) internal successors, (1517), 18 states have internal predecessors, (1517), 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 22:02:09,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:02:09,086 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:02:09,086 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 192 flow. Second operand 18 states and 1517 transitions. [2023-11-06 22:02:09,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 116 transitions, 711 flow [2023-11-06 22:02:09,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 658 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-11-06 22:02:09,092 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 319 flow [2023-11-06 22:02:09,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=319, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2023-11-06 22:02:09,092 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-11-06 22:02:09,093 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 319 flow [2023-11-06 22:02:09,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:09,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:09,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:09,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:09,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:09,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:09,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1032356984, now seen corresponding path program 2 times [2023-11-06 22:02:09,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:09,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074127118] [2023-11-06 22:02:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:09,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074127118] [2023-11-06 22:02:09,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074127118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:09,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053900440] [2023-11-06 22:02:09,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:09,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:09,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:09,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:02:09,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:09,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:09,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:09,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:09,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053900440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:10,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:10,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:10,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313470582] [2023-11-06 22:02:10,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:10,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:10,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 319 flow. Second operand has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:10,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:10,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:10,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:11,054 INFO L124 PetriNetUnfolderBase]: 182/396 cut-off events. [2023-11-06 22:02:11,054 INFO L125 PetriNetUnfolderBase]: For 1067/1067 co-relation queries the response was YES. [2023-11-06 22:02:11,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 396 events. 182/396 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1848 event pairs, 18 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 1656. Up to 147 conditions per place. [2023-11-06 22:02:11,059 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 84 selfloop transitions, 46 changer transitions 17/147 dead transitions. [2023-11-06 22:02:11,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 147 transitions, 1105 flow [2023-11-06 22:02:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:02:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-06 22:02:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2085 transitions. [2023-11-06 22:02:11,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40485436893203886 [2023-11-06 22:02:11,069 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2085 transitions. [2023-11-06 22:02:11,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2085 transitions. [2023-11-06 22:02:11,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:11,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2085 transitions. [2023-11-06 22:02:11,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 83.4) internal successors, (2085), 25 states have internal predecessors, (2085), 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 22:02:11,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 206.0) internal successors, (5356), 26 states have internal predecessors, (5356), 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 22:02:11,090 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 206.0) internal successors, (5356), 26 states have internal predecessors, (5356), 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 22:02:11,090 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 319 flow. Second operand 25 states and 2085 transitions. [2023-11-06 22:02:11,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 147 transitions, 1105 flow [2023-11-06 22:02:11,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 147 transitions, 934 flow, removed 79 selfloop flow, removed 7 redundant places. [2023-11-06 22:02:11,101 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 544 flow [2023-11-06 22:02:11,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=544, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-11-06 22:02:11,102 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-11-06 22:02:11,102 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 544 flow [2023-11-06 22:02:11,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:11,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:11,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:11,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:02:11,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:11,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:11,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1125477884, now seen corresponding path program 3 times [2023-11-06 22:02:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:11,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840237661] [2023-11-06 22:02:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:11,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840237661] [2023-11-06 22:02:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840237661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112712405] [2023-11-06 22:02:11,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:02:11,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:11,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:11,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:11,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:02:11,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:02:11,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:11,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:11,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:11,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:12,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112712405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:12,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:12,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71161697] [2023-11-06 22:02:12,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:12,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:12,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 544 flow. Second operand has 19 states, 19 states have (on average 80.10526315789474) internal successors, (1522), 19 states have internal predecessors, (1522), 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 22:02:12,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:12,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:12,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:13,140 INFO L124 PetriNetUnfolderBase]: 180/377 cut-off events. [2023-11-06 22:02:13,140 INFO L125 PetriNetUnfolderBase]: For 1735/1735 co-relation queries the response was YES. [2023-11-06 22:02:13,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 377 events. 180/377 cut-off events. For 1735/1735 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1674 event pairs, 18 based on Foata normal form. 4/381 useless extension candidates. Maximal degree in co-relation 1786. Up to 129 conditions per place. [2023-11-06 22:02:13,146 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 62 selfloop transitions, 39 changer transitions 34/135 dead transitions. [2023-11-06 22:02:13,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 135 transitions, 1089 flow [2023-11-06 22:02:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:02:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:02:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1838 transitions. [2023-11-06 22:02:13,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055604589585172 [2023-11-06 22:02:13,154 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1838 transitions. [2023-11-06 22:02:13,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1838 transitions. [2023-11-06 22:02:13,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:13,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1838 transitions. [2023-11-06 22:02:13,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 83.54545454545455) internal successors, (1838), 22 states have internal predecessors, (1838), 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 22:02:13,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:13,171 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:13,171 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 544 flow. Second operand 22 states and 1838 transitions. [2023-11-06 22:02:13,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 135 transitions, 1089 flow [2023-11-06 22:02:13,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 135 transitions, 985 flow, removed 30 selfloop flow, removed 9 redundant places. [2023-11-06 22:02:13,184 INFO L231 Difference]: Finished difference. Result has 101 places, 60 transitions, 511 flow [2023-11-06 22:02:13,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=511, PETRI_PLACES=101, PETRI_TRANSITIONS=60} [2023-11-06 22:02:13,185 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2023-11-06 22:02:13,186 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 60 transitions, 511 flow [2023-11-06 22:02:13,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.10526315789474) internal successors, (1522), 19 states have internal predecessors, (1522), 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 22:02:13,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:13,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:13,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:13,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:13,398 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:13,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1911163188, now seen corresponding path program 4 times [2023-11-06 22:02:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:13,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443109799] [2023-11-06 22:02:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443109799] [2023-11-06 22:02:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443109799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288716919] [2023-11-06 22:02:13,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:02:13,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:13,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:13,606 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:13,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:02:13,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:02:13,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:13,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:13,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:13,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:14,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288716919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:14,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:14,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36445910] [2023-11-06 22:02:14,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:14,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:14,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:14,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:14,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 60 transitions, 511 flow. Second operand has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:14,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:14,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:14,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:14,501 INFO L124 PetriNetUnfolderBase]: 167/346 cut-off events. [2023-11-06 22:02:14,502 INFO L125 PetriNetUnfolderBase]: For 1943/1943 co-relation queries the response was YES. [2023-11-06 22:02:14,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 346 events. 167/346 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1450 event pairs, 28 based on Foata normal form. 2/346 useless extension candidates. Maximal degree in co-relation 1735. Up to 268 conditions per place. [2023-11-06 22:02:14,506 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 55 selfloop transitions, 23 changer transitions 10/88 dead transitions. [2023-11-06 22:02:14,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 88 transitions, 792 flow [2023-11-06 22:02:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:02:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:02:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1075 transitions. [2023-11-06 22:02:14,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40141896938013444 [2023-11-06 22:02:14,511 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1075 transitions. [2023-11-06 22:02:14,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1075 transitions. [2023-11-06 22:02:14,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:14,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1075 transitions. [2023-11-06 22:02:14,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.6923076923077) internal successors, (1075), 13 states have internal predecessors, (1075), 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 22:02:14,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 206.0) internal successors, (2884), 14 states have internal predecessors, (2884), 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 22:02:14,531 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 206.0) internal successors, (2884), 14 states have internal predecessors, (2884), 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 22:02:14,540 INFO L175 Difference]: Start difference. First operand has 101 places, 60 transitions, 511 flow. Second operand 13 states and 1075 transitions. [2023-11-06 22:02:14,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 88 transitions, 792 flow [2023-11-06 22:02:14,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 711 flow, removed 11 selfloop flow, removed 16 redundant places. [2023-11-06 22:02:14,553 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 514 flow [2023-11-06 22:02:14,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=514, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2023-11-06 22:02:14,554 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-11-06 22:02:14,555 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 514 flow [2023-11-06 22:02:14,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:14,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:14,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:14,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:02:14,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:02:14,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:14,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1843775642, now seen corresponding path program 5 times [2023-11-06 22:02:14,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:14,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521065623] [2023-11-06 22:02:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:14,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521065623] [2023-11-06 22:02:14,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521065623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:14,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657628538] [2023-11-06 22:02:14,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:02:14,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:14,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:14,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:14,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:02:15,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:15,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:15,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:15,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:15,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657628538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:15,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:15,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:15,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302191001] [2023-11-06 22:02:15,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:15,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:15,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:15,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:15,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:15,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:15,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:15,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:15,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:16,464 INFO L124 PetriNetUnfolderBase]: 168/376 cut-off events. [2023-11-06 22:02:16,464 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2023-11-06 22:02:16,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1697 conditions, 376 events. 168/376 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1754 event pairs, 21 based on Foata normal form. 3/377 useless extension candidates. Maximal degree in co-relation 1669. Up to 228 conditions per place. [2023-11-06 22:02:16,469 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 86 selfloop transitions, 31 changer transitions 16/133 dead transitions. [2023-11-06 22:02:16,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 133 transitions, 1104 flow [2023-11-06 22:02:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:02:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:02:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2023-11-06 22:02:16,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40221914008321774 [2023-11-06 22:02:16,474 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2023-11-06 22:02:16,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2023-11-06 22:02:16,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:16,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2023-11-06 22:02:16,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.85714285714286) internal successors, (1740), 21 states have internal predecessors, (1740), 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 22:02:16,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 206.0) internal successors, (4532), 22 states have internal predecessors, (4532), 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 22:02:16,489 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 206.0) internal successors, (4532), 22 states have internal predecessors, (4532), 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 22:02:16,489 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 514 flow. Second operand 21 states and 1740 transitions. [2023-11-06 22:02:16,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 133 transitions, 1104 flow [2023-11-06 22:02:16,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 1021 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-06 22:02:16,500 INFO L231 Difference]: Finished difference. Result has 103 places, 75 transitions, 657 flow [2023-11-06 22:02:16,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=657, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2023-11-06 22:02:16,502 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2023-11-06 22:02:16,502 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 657 flow [2023-11-06 22:02:16,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:16,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:16,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:16,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:16,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:02:16,710 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:16,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:16,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1421644408, now seen corresponding path program 6 times [2023-11-06 22:02:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:16,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977827422] [2023-11-06 22:02:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:16,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:16,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977827422] [2023-11-06 22:02:16,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977827422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:16,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936792620] [2023-11-06 22:02:16,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:02:16,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:16,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:16,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:16,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:02:16,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 22:02:16,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:16,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:16,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:17,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:17,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936792620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:17,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:17,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:17,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667804810] [2023-11-06 22:02:17,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:17,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:17,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:17,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:17,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 657 flow. Second operand has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:17,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:17,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:17,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:17,701 INFO L124 PetriNetUnfolderBase]: 169/376 cut-off events. [2023-11-06 22:02:17,701 INFO L125 PetriNetUnfolderBase]: For 1435/1435 co-relation queries the response was YES. [2023-11-06 22:02:17,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 376 events. 169/376 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1729 event pairs, 31 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1766. Up to 326 conditions per place. [2023-11-06 22:02:17,707 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 70 selfloop transitions, 15 changer transitions 10/95 dead transitions. [2023-11-06 22:02:17,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 95 transitions, 926 flow [2023-11-06 22:02:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:02:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:02:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 825 transitions. [2023-11-06 22:02:17,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40048543689320387 [2023-11-06 22:02:17,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 825 transitions. [2023-11-06 22:02:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 825 transitions. [2023-11-06 22:02:17,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:17,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 825 transitions. [2023-11-06 22:02:17,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.5) internal successors, (825), 10 states have internal predecessors, (825), 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 22:02:17,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 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 22:02:17,719 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 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 22:02:17,719 INFO L175 Difference]: Start difference. First operand has 103 places, 75 transitions, 657 flow. Second operand 10 states and 825 transitions. [2023-11-06 22:02:17,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 95 transitions, 926 flow [2023-11-06 22:02:17,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 835 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-11-06 22:02:17,736 INFO L231 Difference]: Finished difference. Result has 102 places, 77 transitions, 630 flow [2023-11-06 22:02:17,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=630, PETRI_PLACES=102, PETRI_TRANSITIONS=77} [2023-11-06 22:02:17,737 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2023-11-06 22:02:17,737 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 77 transitions, 630 flow [2023-11-06 22:02:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:17,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:17,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:17,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:17,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:02:17,945 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:17,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1512956074, now seen corresponding path program 7 times [2023-11-06 22:02:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:17,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801620069] [2023-11-06 22:02:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801620069] [2023-11-06 22:02:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801620069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272789796] [2023-11-06 22:02:18,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:02:18,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:18,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:18,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:02:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:18,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:18,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:18,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272789796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:18,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:18,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469418983] [2023-11-06 22:02:18,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:18,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:18,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:18,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 77 transitions, 630 flow. Second operand has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:18,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:18,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:18,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:19,044 INFO L124 PetriNetUnfolderBase]: 167/361 cut-off events. [2023-11-06 22:02:19,044 INFO L125 PetriNetUnfolderBase]: For 1069/1069 co-relation queries the response was YES. [2023-11-06 22:02:19,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 361 events. 167/361 cut-off events. For 1069/1069 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1599 event pairs, 31 based on Foata normal form. 3/362 useless extension candidates. Maximal degree in co-relation 1620. Up to 296 conditions per place. [2023-11-06 22:02:19,049 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 67 selfloop transitions, 22 changer transitions 11/100 dead transitions. [2023-11-06 22:02:19,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 100 transitions, 914 flow [2023-11-06 22:02:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:02:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:02:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1149 transitions. [2023-11-06 22:02:19,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39840499306518723 [2023-11-06 22:02:19,053 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1149 transitions. [2023-11-06 22:02:19,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1149 transitions. [2023-11-06 22:02:19,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:19,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1149 transitions. [2023-11-06 22:02:19,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.07142857142857) internal successors, (1149), 14 states have internal predecessors, (1149), 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 22:02:19,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 206.0) internal successors, (3090), 15 states have internal predecessors, (3090), 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 22:02:19,061 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 206.0) internal successors, (3090), 15 states have internal predecessors, (3090), 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 22:02:19,061 INFO L175 Difference]: Start difference. First operand has 102 places, 77 transitions, 630 flow. Second operand 14 states and 1149 transitions. [2023-11-06 22:02:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 100 transitions, 914 flow [2023-11-06 22:02:19,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 875 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-06 22:02:19,072 INFO L231 Difference]: Finished difference. Result has 107 places, 77 transitions, 648 flow [2023-11-06 22:02:19,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=648, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2023-11-06 22:02:19,073 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2023-11-06 22:02:19,074 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 648 flow [2023-11-06 22:02:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 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 22:02:19,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:19,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:19,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:02:19,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:19,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -297737384, now seen corresponding path program 8 times [2023-11-06 22:02:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875425273] [2023-11-06 22:02:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:19,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875425273] [2023-11-06 22:02:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875425273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908558924] [2023-11-06 22:02:19,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:19,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:19,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:19,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:02:19,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:19,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:19,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:02:19,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:19,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908558924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:19,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:19,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-06 22:02:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012554155] [2023-11-06 22:02:19,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:19,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:20,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:20,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 648 flow. Second operand has 19 states, 19 states have (on average 80.05263157894737) internal successors, (1521), 19 states have internal predecessors, (1521), 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 22:02:20,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:20,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:20,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:20,822 INFO L124 PetriNetUnfolderBase]: 161/330 cut-off events. [2023-11-06 22:02:20,823 INFO L125 PetriNetUnfolderBase]: For 981/981 co-relation queries the response was YES. [2023-11-06 22:02:20,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 330 events. 161/330 cut-off events. For 981/981 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1365 event pairs, 21 based on Foata normal form. 4/332 useless extension candidates. Maximal degree in co-relation 1514. Up to 217 conditions per place. [2023-11-06 22:02:20,827 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 59 selfloop transitions, 28 changer transitions 25/112 dead transitions. [2023-11-06 22:02:20,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 112 transitions, 977 flow [2023-11-06 22:02:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:02:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:02:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1483 transitions. [2023-11-06 22:02:20,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39994606256742177 [2023-11-06 22:02:20,832 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1483 transitions. [2023-11-06 22:02:20,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1483 transitions. [2023-11-06 22:02:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:20,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1483 transitions. [2023-11-06 22:02:20,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 82.38888888888889) internal successors, (1483), 18 states have internal predecessors, (1483), 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 22:02:20,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:02:20,842 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:02:20,842 INFO L175 Difference]: Start difference. First operand has 107 places, 77 transitions, 648 flow. Second operand 18 states and 1483 transitions. [2023-11-06 22:02:20,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 112 transitions, 977 flow [2023-11-06 22:02:20,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 112 transitions, 918 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-06 22:02:20,852 INFO L231 Difference]: Finished difference. Result has 110 places, 72 transitions, 654 flow [2023-11-06 22:02:20,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=654, PETRI_PLACES=110, PETRI_TRANSITIONS=72} [2023-11-06 22:02:20,853 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2023-11-06 22:02:20,853 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 72 transitions, 654 flow [2023-11-06 22:02:20,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 80.05263157894737) internal successors, (1521), 19 states have internal predecessors, (1521), 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 22:02:20,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:20,854 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:20,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:21,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:21,060 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:21,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1179720116, now seen corresponding path program 9 times [2023-11-06 22:02:21,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:21,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546217131] [2023-11-06 22:02:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:21,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546217131] [2023-11-06 22:02:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546217131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384397193] [2023-11-06 22:02:21,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:02:21,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:21,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:21,344 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:21,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:02:21,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:02:21,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:21,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:21,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:21,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384397193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:21,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972603750] [2023-11-06 22:02:21,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:22,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:22,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 72 transitions, 654 flow. Second operand has 24 states, 24 states have (on average 79.875) internal successors, (1917), 24 states have internal predecessors, (1917), 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 22:02:22,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:22,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:22,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:23,416 INFO L124 PetriNetUnfolderBase]: 287/585 cut-off events. [2023-11-06 22:02:23,417 INFO L125 PetriNetUnfolderBase]: For 2076/2076 co-relation queries the response was YES. [2023-11-06 22:02:23,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 585 events. 287/585 cut-off events. For 2076/2076 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2821 event pairs, 18 based on Foata normal form. 4/587 useless extension candidates. Maximal degree in co-relation 2720. Up to 157 conditions per place. [2023-11-06 22:02:23,424 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 117 selfloop transitions, 72 changer transitions 20/209 dead transitions. [2023-11-06 22:02:23,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 209 transitions, 1743 flow [2023-11-06 22:02:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:02:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-06 22:02:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2276 transitions. [2023-11-06 22:02:23,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40920532182668107 [2023-11-06 22:02:23,430 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2276 transitions. [2023-11-06 22:02:23,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2276 transitions. [2023-11-06 22:02:23,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:23,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2276 transitions. [2023-11-06 22:02:23,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 84.29629629629629) internal successors, (2276), 27 states have internal predecessors, (2276), 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 22:02:23,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 206.0) internal successors, (5768), 28 states have internal predecessors, (5768), 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 22:02:23,445 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 206.0) internal successors, (5768), 28 states have internal predecessors, (5768), 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 22:02:23,445 INFO L175 Difference]: Start difference. First operand has 110 places, 72 transitions, 654 flow. Second operand 27 states and 2276 transitions. [2023-11-06 22:02:23,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 209 transitions, 1743 flow [2023-11-06 22:02:23,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 209 transitions, 1610 flow, removed 44 selfloop flow, removed 14 redundant places. [2023-11-06 22:02:23,462 INFO L231 Difference]: Finished difference. Result has 124 places, 102 transitions, 1023 flow [2023-11-06 22:02:23,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1023, PETRI_PLACES=124, PETRI_TRANSITIONS=102} [2023-11-06 22:02:23,463 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2023-11-06 22:02:23,463 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 102 transitions, 1023 flow [2023-11-06 22:02:23,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.875) internal successors, (1917), 24 states have internal predecessors, (1917), 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 22:02:23,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:23,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:23,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:23,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:23,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:23,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2121152965, now seen corresponding path program 1 times [2023-11-06 22:02:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138453692] [2023-11-06 22:02:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:23,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138453692] [2023-11-06 22:02:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138453692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602109506] [2023-11-06 22:02:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:23,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:23,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:23,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:23,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:02:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:23,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:23,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:24,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602109506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:24,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-06 22:02:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098035217] [2023-11-06 22:02:24,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:02:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:02:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:02:24,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:24,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 102 transitions, 1023 flow. Second operand has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 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 22:02:24,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:24,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:24,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:24,943 INFO L124 PetriNetUnfolderBase]: 283/576 cut-off events. [2023-11-06 22:02:24,943 INFO L125 PetriNetUnfolderBase]: For 4113/4113 co-relation queries the response was YES. [2023-11-06 22:02:24,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 576 events. 283/576 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2731 event pairs, 26 based on Foata normal form. 9/583 useless extension candidates. Maximal degree in co-relation 3182. Up to 177 conditions per place. [2023-11-06 22:02:24,949 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 62 selfloop transitions, 49 changer transitions 48/159 dead transitions. [2023-11-06 22:02:24,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 159 transitions, 1563 flow [2023-11-06 22:02:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:02:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:02:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1428 transitions. [2023-11-06 22:02:24,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077669902912621 [2023-11-06 22:02:24,953 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1428 transitions. [2023-11-06 22:02:24,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1428 transitions. [2023-11-06 22:02:24,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:24,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1428 transitions. [2023-11-06 22:02:24,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 22:02:24,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 206.0) internal successors, (3708), 18 states have internal predecessors, (3708), 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 22:02:24,962 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 206.0) internal successors, (3708), 18 states have internal predecessors, (3708), 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 22:02:24,962 INFO L175 Difference]: Start difference. First operand has 124 places, 102 transitions, 1023 flow. Second operand 17 states and 1428 transitions. [2023-11-06 22:02:24,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 159 transitions, 1563 flow [2023-11-06 22:02:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 159 transitions, 1275 flow, removed 93 selfloop flow, removed 12 redundant places. [2023-11-06 22:02:24,984 INFO L231 Difference]: Finished difference. Result has 130 places, 89 transitions, 748 flow [2023-11-06 22:02:24,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=748, PETRI_PLACES=130, PETRI_TRANSITIONS=89} [2023-11-06 22:02:24,985 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2023-11-06 22:02:24,985 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 89 transitions, 748 flow [2023-11-06 22:02:24,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 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 22:02:24,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:24,986 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:24,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:25,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:25,187 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:25,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:25,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1949183192, now seen corresponding path program 10 times [2023-11-06 22:02:25,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:25,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988358609] [2023-11-06 22:02:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:25,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:25,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988358609] [2023-11-06 22:02:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988358609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543150824] [2023-11-06 22:02:25,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:02:25,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:25,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:25,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:25,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:02:25,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:02:25,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:25,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:25,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:25,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:25,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543150824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:25,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:25,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457975235] [2023-11-06 22:02:25,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:25,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:26,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:26,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 89 transitions, 748 flow. Second operand has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:26,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:26,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:26,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:27,975 INFO L124 PetriNetUnfolderBase]: 400/807 cut-off events. [2023-11-06 22:02:27,975 INFO L125 PetriNetUnfolderBase]: For 8230/8230 co-relation queries the response was YES. [2023-11-06 22:02:27,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 807 events. 400/807 cut-off events. For 8230/8230 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4224 event pairs, 16 based on Foata normal form. 4/809 useless extension candidates. Maximal degree in co-relation 4301. Up to 203 conditions per place. [2023-11-06 22:02:27,987 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 125 selfloop transitions, 123 changer transitions 20/268 dead transitions. [2023-11-06 22:02:27,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 268 transitions, 2462 flow [2023-11-06 22:02:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-06 22:02:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-06 22:02:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3891 transitions. [2023-11-06 22:02:28,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.401879776905598 [2023-11-06 22:02:28,008 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3891 transitions. [2023-11-06 22:02:28,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3891 transitions. [2023-11-06 22:02:28,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:28,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3891 transitions. [2023-11-06 22:02:28,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 82.7872340425532) internal successors, (3891), 47 states have internal predecessors, (3891), 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 22:02:28,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 206.0) internal successors, (9888), 48 states have internal predecessors, (9888), 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 22:02:28,050 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 206.0) internal successors, (9888), 48 states have internal predecessors, (9888), 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 22:02:28,051 INFO L175 Difference]: Start difference. First operand has 130 places, 89 transitions, 748 flow. Second operand 47 states and 3891 transitions. [2023-11-06 22:02:28,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 268 transitions, 2462 flow [2023-11-06 22:02:28,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 268 transitions, 2010 flow, removed 160 selfloop flow, removed 22 redundant places. [2023-11-06 22:02:28,076 INFO L231 Difference]: Finished difference. Result has 151 places, 150 transitions, 1420 flow [2023-11-06 22:02:28,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1420, PETRI_PLACES=151, PETRI_TRANSITIONS=150} [2023-11-06 22:02:28,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2023-11-06 22:02:28,077 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 150 transitions, 1420 flow [2023-11-06 22:02:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:28,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:28,078 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:28,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:28,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:28,284 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:28,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2042304092, now seen corresponding path program 11 times [2023-11-06 22:02:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958251717] [2023-11-06 22:02:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:28,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958251717] [2023-11-06 22:02:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958251717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981238296] [2023-11-06 22:02:28,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:02:28,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:28,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:28,539 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:28,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:02:28,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:02:28,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:28,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:28,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:28,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981238296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:29,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:29,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104603843] [2023-11-06 22:02:29,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:29,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:29,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:29,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 150 transitions, 1420 flow. Second operand has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 24 states have internal predecessors, (1918), 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 22:02:29,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:29,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:29,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:31,089 INFO L124 PetriNetUnfolderBase]: 403/797 cut-off events. [2023-11-06 22:02:31,089 INFO L125 PetriNetUnfolderBase]: For 7255/7255 co-relation queries the response was YES. [2023-11-06 22:02:31,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 797 events. 403/797 cut-off events. For 7255/7255 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4049 event pairs, 18 based on Foata normal form. 5/802 useless extension candidates. Maximal degree in co-relation 4474. Up to 199 conditions per place. [2023-11-06 22:02:31,101 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 118 selfloop transitions, 116 changer transitions 25/259 dead transitions. [2023-11-06 22:02:31,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 259 transitions, 2497 flow [2023-11-06 22:02:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 22:02:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-06 22:02:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3413 transitions. [2023-11-06 22:02:31,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040966137816718 [2023-11-06 22:02:31,107 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3413 transitions. [2023-11-06 22:02:31,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3413 transitions. [2023-11-06 22:02:31,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:31,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3413 transitions. [2023-11-06 22:02:31,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 83.2439024390244) internal successors, (3413), 41 states have internal predecessors, (3413), 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 22:02:31,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 206.0) internal successors, (8652), 42 states have internal predecessors, (8652), 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 22:02:31,126 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 206.0) internal successors, (8652), 42 states have internal predecessors, (8652), 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 22:02:31,127 INFO L175 Difference]: Start difference. First operand has 151 places, 150 transitions, 1420 flow. Second operand 41 states and 3413 transitions. [2023-11-06 22:02:31,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 259 transitions, 2497 flow [2023-11-06 22:02:31,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 259 transitions, 2097 flow, removed 139 selfloop flow, removed 18 redundant places. [2023-11-06 22:02:31,162 INFO L231 Difference]: Finished difference. Result has 169 places, 145 transitions, 1235 flow [2023-11-06 22:02:31,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1235, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2023-11-06 22:02:31,164 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2023-11-06 22:02:31,164 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 1235 flow [2023-11-06 22:02:31,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 24 states have internal predecessors, (1918), 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 22:02:31,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:31,165 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:31,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:31,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:02:31,371 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:31,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash 994336980, now seen corresponding path program 12 times [2023-11-06 22:02:31,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:31,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527137666] [2023-11-06 22:02:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:31,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527137666] [2023-11-06 22:02:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527137666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956749376] [2023-11-06 22:02:31,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:02:31,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:31,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:31,577 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:31,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:02:31,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:02:31,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:31,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:31,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:31,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956749376] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:32,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:32,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040506598] [2023-11-06 22:02:32,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:32,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:32,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:32,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 145 transitions, 1235 flow. Second operand has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:32,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:32,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:33,443 INFO L124 PetriNetUnfolderBase]: 452/886 cut-off events. [2023-11-06 22:02:33,444 INFO L125 PetriNetUnfolderBase]: For 9020/9020 co-relation queries the response was YES. [2023-11-06 22:02:33,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 886 events. 452/886 cut-off events. For 9020/9020 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4590 event pairs, 48 based on Foata normal form. 5/887 useless extension candidates. Maximal degree in co-relation 4909. Up to 476 conditions per place. [2023-11-06 22:02:33,454 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 94 selfloop transitions, 90 changer transitions 46/230 dead transitions. [2023-11-06 22:02:33,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 230 transitions, 2210 flow [2023-11-06 22:02:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:02:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:02:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2637 transitions. [2023-11-06 22:02:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40003033980582525 [2023-11-06 22:02:33,458 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2637 transitions. [2023-11-06 22:02:33,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2637 transitions. [2023-11-06 22:02:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:33,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2637 transitions. [2023-11-06 22:02:33,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 82.40625) internal successors, (2637), 32 states have internal predecessors, (2637), 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 22:02:33,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 206.0) internal successors, (6798), 33 states have internal predecessors, (6798), 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 22:02:33,470 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 206.0) internal successors, (6798), 33 states have internal predecessors, (6798), 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 22:02:33,471 INFO L175 Difference]: Start difference. First operand has 169 places, 145 transitions, 1235 flow. Second operand 32 states and 2637 transitions. [2023-11-06 22:02:33,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 230 transitions, 2210 flow [2023-11-06 22:02:33,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 230 transitions, 1958 flow, removed 5 selfloop flow, removed 32 redundant places. [2023-11-06 22:02:33,495 INFO L231 Difference]: Finished difference. Result has 169 places, 147 transitions, 1318 flow [2023-11-06 22:02:33,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1318, PETRI_PLACES=169, PETRI_TRANSITIONS=147} [2023-11-06 22:02:33,496 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2023-11-06 22:02:33,496 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 147 transitions, 1318 flow [2023-11-06 22:02:33,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:33,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:33,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:33,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-06 22:02:33,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:02:33,703 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:33,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash 79127669, now seen corresponding path program 2 times [2023-11-06 22:02:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:33,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508873664] [2023-11-06 22:02:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:33,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508873664] [2023-11-06 22:02:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508873664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409051225] [2023-11-06 22:02:33,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:33,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:33,890 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:33,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:02:33,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:33,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:33,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:33,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:34,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409051225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:34,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:34,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-06 22:02:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979077059] [2023-11-06 22:02:34,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:02:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:02:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:02:34,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:34,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 147 transitions, 1318 flow. Second operand has 20 states, 20 states have (on average 79.65) internal successors, (1593), 20 states have internal predecessors, (1593), 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 22:02:34,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:34,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:34,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:35,034 INFO L124 PetriNetUnfolderBase]: 576/1074 cut-off events. [2023-11-06 22:02:35,034 INFO L125 PetriNetUnfolderBase]: For 12408/12408 co-relation queries the response was YES. [2023-11-06 22:02:35,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6249 conditions, 1074 events. 576/1074 cut-off events. For 12408/12408 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5604 event pairs, 34 based on Foata normal form. 9/1079 useless extension candidates. Maximal degree in co-relation 6202. Up to 587 conditions per place. [2023-11-06 22:02:35,046 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 127 selfloop transitions, 81 changer transitions 53/261 dead transitions. [2023-11-06 22:02:35,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 261 transitions, 2593 flow [2023-11-06 22:02:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:02:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:02:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1834 transitions. [2023-11-06 22:02:35,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40467784642541926 [2023-11-06 22:02:35,050 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1834 transitions. [2023-11-06 22:02:35,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1834 transitions. [2023-11-06 22:02:35,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:35,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1834 transitions. [2023-11-06 22:02:35,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 83.36363636363636) internal successors, (1834), 22 states have internal predecessors, (1834), 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 22:02:35,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:35,056 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:35,056 INFO L175 Difference]: Start difference. First operand has 169 places, 147 transitions, 1318 flow. Second operand 22 states and 1834 transitions. [2023-11-06 22:02:35,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 261 transitions, 2593 flow [2023-11-06 22:02:35,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 261 transitions, 2387 flow, removed 50 selfloop flow, removed 19 redundant places. [2023-11-06 22:02:35,098 INFO L231 Difference]: Finished difference. Result has 159 places, 171 transitions, 1611 flow [2023-11-06 22:02:35,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1611, PETRI_PLACES=159, PETRI_TRANSITIONS=171} [2023-11-06 22:02:35,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2023-11-06 22:02:35,099 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 171 transitions, 1611 flow [2023-11-06 22:02:35,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.65) internal successors, (1593), 20 states have internal predecessors, (1593), 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 22:02:35,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:35,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:35,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:02:35,306 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:35,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1115857673, now seen corresponding path program 3 times [2023-11-06 22:02:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:35,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687971707] [2023-11-06 22:02:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:35,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687971707] [2023-11-06 22:02:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687971707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:35,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007174072] [2023-11-06 22:02:35,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:02:35,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:35,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:35,507 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:35,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:02:35,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:02:35,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:35,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:35,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:35,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:35,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007174072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:35,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:35,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-11-06 22:02:35,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967437100] [2023-11-06 22:02:35,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:35,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:02:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:02:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:02:36,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:36,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 171 transitions, 1611 flow. Second operand has 21 states, 21 states have (on average 79.57142857142857) internal successors, (1671), 21 states have internal predecessors, (1671), 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 22:02:36,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:36,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:37,167 INFO L124 PetriNetUnfolderBase]: 567/1117 cut-off events. [2023-11-06 22:02:37,168 INFO L125 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2023-11-06 22:02:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 1117 events. 567/1117 cut-off events. For 21480/21480 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6194 event pairs, 36 based on Foata normal form. 11/1128 useless extension candidates. Maximal degree in co-relation 7106. Up to 464 conditions per place. [2023-11-06 22:02:37,185 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 145 selfloop transitions, 145 changer transitions 24/314 dead transitions. [2023-11-06 22:02:37,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 314 transitions, 3354 flow [2023-11-06 22:02:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-06 22:02:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-06 22:02:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2477 transitions. [2023-11-06 22:02:37,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4008090614886731 [2023-11-06 22:02:37,189 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2477 transitions. [2023-11-06 22:02:37,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2477 transitions. [2023-11-06 22:02:37,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:37,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2477 transitions. [2023-11-06 22:02:37,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 82.56666666666666) internal successors, (2477), 30 states have internal predecessors, (2477), 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 22:02:37,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 206.0) internal successors, (6386), 31 states have internal predecessors, (6386), 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 22:02:37,205 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 206.0) internal successors, (6386), 31 states have internal predecessors, (6386), 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 22:02:37,206 INFO L175 Difference]: Start difference. First operand has 159 places, 171 transitions, 1611 flow. Second operand 30 states and 2477 transitions. [2023-11-06 22:02:37,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 314 transitions, 3354 flow [2023-11-06 22:02:37,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 314 transitions, 3124 flow, removed 76 selfloop flow, removed 10 redundant places. [2023-11-06 22:02:37,273 INFO L231 Difference]: Finished difference. Result has 178 places, 227 transitions, 2512 flow [2023-11-06 22:02:37,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2512, PETRI_PLACES=178, PETRI_TRANSITIONS=227} [2023-11-06 22:02:37,275 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2023-11-06 22:02:37,275 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 227 transitions, 2512 flow [2023-11-06 22:02:37,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.57142857142857) internal successors, (1671), 21 states have internal predecessors, (1671), 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 22:02:37,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:37,276 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:37,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:37,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:02:37,481 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:37,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:37,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1022736773, now seen corresponding path program 4 times [2023-11-06 22:02:37,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:37,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938899511] [2023-11-06 22:02:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:37,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:37,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:37,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938899511] [2023-11-06 22:02:37,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938899511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:37,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702793613] [2023-11-06 22:02:37,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:02:37,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:37,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:37,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:37,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:02:37,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:02:37,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:37,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:37,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:37,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702793613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:38,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:38,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-11-06 22:02:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273024852] [2023-11-06 22:02:38,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:38,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:02:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:02:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:02:38,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:38,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 227 transitions, 2512 flow. Second operand has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 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 22:02:38,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:38,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:38,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:39,267 INFO L124 PetriNetUnfolderBase]: 554/1084 cut-off events. [2023-11-06 22:02:39,267 INFO L125 PetriNetUnfolderBase]: For 15696/15696 co-relation queries the response was YES. [2023-11-06 22:02:39,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 1084 events. 554/1084 cut-off events. For 15696/15696 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5915 event pairs, 38 based on Foata normal form. 9/1093 useless extension candidates. Maximal degree in co-relation 6666. Up to 460 conditions per place. [2023-11-06 22:02:39,280 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 138 selfloop transitions, 138 changer transitions 21/297 dead transitions. [2023-11-06 22:02:39,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 297 transitions, 3449 flow [2023-11-06 22:02:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:02:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-06 22:02:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2309 transitions. [2023-11-06 22:02:39,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003120665742025 [2023-11-06 22:02:39,284 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2309 transitions. [2023-11-06 22:02:39,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2309 transitions. [2023-11-06 22:02:39,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:39,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2309 transitions. [2023-11-06 22:02:39,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.46428571428571) internal successors, (2309), 28 states have internal predecessors, (2309), 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 22:02:39,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 206.0) internal successors, (5974), 29 states have internal predecessors, (5974), 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 22:02:39,294 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 206.0) internal successors, (5974), 29 states have internal predecessors, (5974), 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 22:02:39,294 INFO L175 Difference]: Start difference. First operand has 178 places, 227 transitions, 2512 flow. Second operand 28 states and 2309 transitions. [2023-11-06 22:02:39,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 297 transitions, 3449 flow [2023-11-06 22:02:39,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 297 transitions, 2866 flow, removed 247 selfloop flow, removed 17 redundant places. [2023-11-06 22:02:39,383 INFO L231 Difference]: Finished difference. Result has 189 places, 225 transitions, 2276 flow [2023-11-06 22:02:39,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2276, PETRI_PLACES=189, PETRI_TRANSITIONS=225} [2023-11-06 22:02:39,384 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2023-11-06 22:02:39,385 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 225 transitions, 2276 flow [2023-11-06 22:02:39,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 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 22:02:39,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:39,385 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:39,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 22:02:39,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:02:39,586 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:39,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1201340491, now seen corresponding path program 5 times [2023-11-06 22:02:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:39,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389115962] [2023-11-06 22:02:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:39,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:39,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:39,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389115962] [2023-11-06 22:02:39,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389115962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:39,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142569368] [2023-11-06 22:02:39,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:02:39,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:39,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:39,772 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:39,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:02:39,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:39,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:39,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:39,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:40,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142569368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:40,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-06 22:02:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055520234] [2023-11-06 22:02:40,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:02:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:02:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:02:40,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:40,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 225 transitions, 2276 flow. Second operand has 20 states, 20 states have (on average 79.6) internal successors, (1592), 20 states have internal predecessors, (1592), 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 22:02:40,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:40,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:40,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:40,947 INFO L124 PetriNetUnfolderBase]: 626/1189 cut-off events. [2023-11-06 22:02:40,948 INFO L125 PetriNetUnfolderBase]: For 6338/6338 co-relation queries the response was YES. [2023-11-06 22:02:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 1189 events. 626/1189 cut-off events. For 6338/6338 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6505 event pairs, 23 based on Foata normal form. 10/1199 useless extension candidates. Maximal degree in co-relation 6203. Up to 564 conditions per place. [2023-11-06 22:02:40,957 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 171 selfloop transitions, 83 changer transitions 66/320 dead transitions. [2023-11-06 22:02:40,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 320 transitions, 3584 flow [2023-11-06 22:02:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:02:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:02:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1822 transitions. [2023-11-06 22:02:40,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40203000882612533 [2023-11-06 22:02:40,963 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1822 transitions. [2023-11-06 22:02:40,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1822 transitions. [2023-11-06 22:02:40,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:40,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1822 transitions. [2023-11-06 22:02:40,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 82.81818181818181) internal successors, (1822), 22 states have internal predecessors, (1822), 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 22:02:40,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:40,971 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:40,971 INFO L175 Difference]: Start difference. First operand has 189 places, 225 transitions, 2276 flow. Second operand 22 states and 1822 transitions. [2023-11-06 22:02:40,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 320 transitions, 3584 flow [2023-11-06 22:02:41,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 320 transitions, 3188 flow, removed 43 selfloop flow, removed 24 redundant places. [2023-11-06 22:02:41,023 INFO L231 Difference]: Finished difference. Result has 189 places, 220 transitions, 2176 flow [2023-11-06 22:02:41,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2176, PETRI_PLACES=189, PETRI_TRANSITIONS=220} [2023-11-06 22:02:41,024 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2023-11-06 22:02:41,024 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 220 transitions, 2176 flow [2023-11-06 22:02:41,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.6) internal successors, (1592), 20 states have internal predecessors, (1592), 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 22:02:41,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:41,025 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:41,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:41,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:02:41,231 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:41,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:41,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1054836996, now seen corresponding path program 13 times [2023-11-06 22:02:41,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:41,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704836946] [2023-11-06 22:02:41,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:41,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:41,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:41,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704836946] [2023-11-06 22:02:41,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704836946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:41,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837066564] [2023-11-06 22:02:41,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:02:41,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:41,412 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:41,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:02:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:41,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:41,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:41,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837066564] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:41,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:41,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103341007] [2023-11-06 22:02:41,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:42,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:42,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 220 transitions, 2176 flow. Second operand has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:42,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:42,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:42,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:43,135 INFO L124 PetriNetUnfolderBase]: 571/1110 cut-off events. [2023-11-06 22:02:43,135 INFO L125 PetriNetUnfolderBase]: For 7491/7491 co-relation queries the response was YES. [2023-11-06 22:02:43,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5966 conditions, 1110 events. 571/1110 cut-off events. For 7491/7491 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6048 event pairs, 25 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 5912. Up to 903 conditions per place. [2023-11-06 22:02:43,143 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 214 selfloop transitions, 43 changer transitions 41/298 dead transitions. [2023-11-06 22:02:43,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 298 transitions, 3269 flow [2023-11-06 22:02:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:02:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-06 22:02:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2210 transitions. [2023-11-06 22:02:43,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397339086659475 [2023-11-06 22:02:43,147 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2210 transitions. [2023-11-06 22:02:43,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2210 transitions. [2023-11-06 22:02:43,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:43,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2210 transitions. [2023-11-06 22:02:43,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 81.85185185185185) internal successors, (2210), 27 states have internal predecessors, (2210), 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 22:02:43,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 206.0) internal successors, (5768), 28 states have internal predecessors, (5768), 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 22:02:43,157 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 206.0) internal successors, (5768), 28 states have internal predecessors, (5768), 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 22:02:43,158 INFO L175 Difference]: Start difference. First operand has 189 places, 220 transitions, 2176 flow. Second operand 27 states and 2210 transitions. [2023-11-06 22:02:43,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 298 transitions, 3269 flow [2023-11-06 22:02:43,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 298 transitions, 2974 flow, removed 58 selfloop flow, removed 26 redundant places. [2023-11-06 22:02:43,222 INFO L231 Difference]: Finished difference. Result has 180 places, 231 transitions, 2226 flow [2023-11-06 22:02:43,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2226, PETRI_PLACES=180, PETRI_TRANSITIONS=231} [2023-11-06 22:02:43,223 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2023-11-06 22:02:43,223 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 231 transitions, 2226 flow [2023-11-06 22:02:43,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:43,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:43,224 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:43,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:02:43,429 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:43,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1841078571, now seen corresponding path program 6 times [2023-11-06 22:02:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:43,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113050826] [2023-11-06 22:02:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:43,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:43,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113050826] [2023-11-06 22:02:43,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113050826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:43,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895226813] [2023-11-06 22:02:43,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:02:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:43,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:43,608 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:43,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:02:43,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:02:43,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:43,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:02:43,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:43,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895226813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:44,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-06 22:02:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172746847] [2023-11-06 22:02:44,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:02:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:02:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:02:44,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:44,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 231 transitions, 2226 flow. Second operand has 23 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 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 22:02:44,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:44,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:44,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:44,740 INFO L124 PetriNetUnfolderBase]: 560/1065 cut-off events. [2023-11-06 22:02:44,741 INFO L125 PetriNetUnfolderBase]: For 3016/3016 co-relation queries the response was YES. [2023-11-06 22:02:44,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5196 conditions, 1065 events. 560/1065 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5617 event pairs, 29 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 5151. Up to 975 conditions per place. [2023-11-06 22:02:44,751 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 219 selfloop transitions, 23 changer transitions 22/264 dead transitions. [2023-11-06 22:02:44,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 264 transitions, 2945 flow [2023-11-06 22:02:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:02:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:02:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1233 transitions. [2023-11-06 22:02:44,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990291262135922 [2023-11-06 22:02:44,754 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1233 transitions. [2023-11-06 22:02:44,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1233 transitions. [2023-11-06 22:02:44,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:44,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1233 transitions. [2023-11-06 22:02:44,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.2) internal successors, (1233), 15 states have internal predecessors, (1233), 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 22:02:44,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 206.0) internal successors, (3296), 16 states have internal predecessors, (3296), 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 22:02:44,759 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 206.0) internal successors, (3296), 16 states have internal predecessors, (3296), 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 22:02:44,759 INFO L175 Difference]: Start difference. First operand has 180 places, 231 transitions, 2226 flow. Second operand 15 states and 1233 transitions. [2023-11-06 22:02:44,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 264 transitions, 2945 flow [2023-11-06 22:02:44,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 264 transitions, 2806 flow, removed 54 selfloop flow, removed 17 redundant places. [2023-11-06 22:02:44,795 INFO L231 Difference]: Finished difference. Result has 168 places, 230 transitions, 2224 flow [2023-11-06 22:02:44,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2224, PETRI_PLACES=168, PETRI_TRANSITIONS=230} [2023-11-06 22:02:44,796 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2023-11-06 22:02:44,796 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 230 transitions, 2224 flow [2023-11-06 22:02:44,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 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 22:02:44,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:44,797 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:44,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:45,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:45,002 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:45,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 803897044, now seen corresponding path program 14 times [2023-11-06 22:02:45,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:45,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008445584] [2023-11-06 22:02:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:45,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008445584] [2023-11-06 22:02:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008445584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793050800] [2023-11-06 22:02:45,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:45,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:45,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:45,188 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:45,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:02:45,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:45,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:45,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:45,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:45,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793050800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:45,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:45,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743345560] [2023-11-06 22:02:45,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:45,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:45,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 230 transitions, 2224 flow. Second operand has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:45,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:45,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:45,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:46,353 INFO L124 PetriNetUnfolderBase]: 542/1042 cut-off events. [2023-11-06 22:02:46,353 INFO L125 PetriNetUnfolderBase]: For 3345/3345 co-relation queries the response was YES. [2023-11-06 22:02:46,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 1042 events. 542/1042 cut-off events. For 3345/3345 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5518 event pairs, 33 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 5066. Up to 981 conditions per place. [2023-11-06 22:02:46,359 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 220 selfloop transitions, 6 changer transitions 33/259 dead transitions. [2023-11-06 22:02:46,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 259 transitions, 2852 flow [2023-11-06 22:02:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:02:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:02:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1148 transitions. [2023-11-06 22:02:46,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39805825242718446 [2023-11-06 22:02:46,362 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1148 transitions. [2023-11-06 22:02:46,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1148 transitions. [2023-11-06 22:02:46,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:46,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1148 transitions. [2023-11-06 22:02:46,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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 22:02:46,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 206.0) internal successors, (3090), 15 states have internal predecessors, (3090), 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 22:02:46,368 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 206.0) internal successors, (3090), 15 states have internal predecessors, (3090), 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 22:02:46,368 INFO L175 Difference]: Start difference. First operand has 168 places, 230 transitions, 2224 flow. Second operand 14 states and 1148 transitions. [2023-11-06 22:02:46,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 259 transitions, 2852 flow [2023-11-06 22:02:46,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 259 transitions, 2780 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-11-06 22:02:46,392 INFO L231 Difference]: Finished difference. Result has 170 places, 222 transitions, 2084 flow [2023-11-06 22:02:46,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2084, PETRI_PLACES=170, PETRI_TRANSITIONS=222} [2023-11-06 22:02:46,393 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2023-11-06 22:02:46,393 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 222 transitions, 2084 flow [2023-11-06 22:02:46,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:46,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:46,393 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:46,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:46,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-06 22:02:46,594 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:46,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1626287701, now seen corresponding path program 7 times [2023-11-06 22:02:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:46,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659457749] [2023-11-06 22:02:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:46,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:46,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659457749] [2023-11-06 22:02:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659457749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257655556] [2023-11-06 22:02:46,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:02:46,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:46,791 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:46,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:02:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:46,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:46,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:47,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257655556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:47,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-06 22:02:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370528083] [2023-11-06 22:02:47,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:02:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:02:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:02:47,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:47,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 222 transitions, 2084 flow. Second operand has 20 states, 20 states have (on average 79.6) internal successors, (1592), 20 states have internal predecessors, (1592), 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 22:02:47,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:47,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:47,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:47,914 INFO L124 PetriNetUnfolderBase]: 529/997 cut-off events. [2023-11-06 22:02:47,914 INFO L125 PetriNetUnfolderBase]: For 3137/3137 co-relation queries the response was YES. [2023-11-06 22:02:47,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 997 events. 529/997 cut-off events. For 3137/3137 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5125 event pairs, 3 based on Foata normal form. 9/1006 useless extension candidates. Maximal degree in co-relation 4835. Up to 777 conditions per place. [2023-11-06 22:02:47,922 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 211 selfloop transitions, 31 changer transitions 39/281 dead transitions. [2023-11-06 22:02:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 281 transitions, 2972 flow [2023-11-06 22:02:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:02:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:02:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1570 transitions. [2023-11-06 22:02:47,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40112416964741954 [2023-11-06 22:02:47,931 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1570 transitions. [2023-11-06 22:02:47,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1570 transitions. [2023-11-06 22:02:47,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:47,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1570 transitions. [2023-11-06 22:02:47,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.63157894736842) internal successors, (1570), 19 states have internal predecessors, (1570), 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 22:02:47,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:02:47,938 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:02:47,938 INFO L175 Difference]: Start difference. First operand has 170 places, 222 transitions, 2084 flow. Second operand 19 states and 1570 transitions. [2023-11-06 22:02:47,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 281 transitions, 2972 flow [2023-11-06 22:02:47,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 281 transitions, 2914 flow, removed 22 selfloop flow, removed 11 redundant places. [2023-11-06 22:02:47,975 INFO L231 Difference]: Finished difference. Result has 169 places, 219 transitions, 2142 flow [2023-11-06 22:02:47,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2142, PETRI_PLACES=169, PETRI_TRANSITIONS=219} [2023-11-06 22:02:47,976 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2023-11-06 22:02:47,976 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 219 transitions, 2142 flow [2023-11-06 22:02:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.6) internal successors, (1592), 20 states have internal predecessors, (1592), 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 22:02:47,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:47,977 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:47,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:48,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-06 22:02:48,182 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:48,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 28424673, now seen corresponding path program 8 times [2023-11-06 22:02:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117126182] [2023-11-06 22:02:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:48,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:48,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:48,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117126182] [2023-11-06 22:02:48,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117126182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:48,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929133396] [2023-11-06 22:02:48,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:02:48,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:48,378 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:48,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:02:48,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:02:48,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:48,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:02:48,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:48,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929133396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:48,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:48,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-06 22:02:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592992979] [2023-11-06 22:02:48,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:49,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:49,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 219 transitions, 2142 flow. Second operand has 24 states, 24 states have (on average 79.70833333333333) internal successors, (1913), 24 states have internal predecessors, (1913), 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 22:02:49,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:49,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:49,798 INFO L124 PetriNetUnfolderBase]: 503/979 cut-off events. [2023-11-06 22:02:49,798 INFO L125 PetriNetUnfolderBase]: For 3420/3420 co-relation queries the response was YES. [2023-11-06 22:02:49,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4946 conditions, 979 events. 503/979 cut-off events. For 3420/3420 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5186 event pairs, 7 based on Foata normal form. 5/984 useless extension candidates. Maximal degree in co-relation 4901. Up to 836 conditions per place. [2023-11-06 22:02:49,808 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 227 selfloop transitions, 31 changer transitions 24/282 dead transitions. [2023-11-06 22:02:49,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 282 transitions, 3137 flow [2023-11-06 22:02:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:02:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:02:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1966 transitions. [2023-11-06 22:02:49,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976537216828479 [2023-11-06 22:02:49,812 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1966 transitions. [2023-11-06 22:02:49,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1966 transitions. [2023-11-06 22:02:49,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:49,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1966 transitions. [2023-11-06 22:02:49,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 81.91666666666667) internal successors, (1966), 24 states have internal predecessors, (1966), 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 22:02:49,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 206.0) internal successors, (5150), 25 states have internal predecessors, (5150), 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 22:02:49,821 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 206.0) internal successors, (5150), 25 states have internal predecessors, (5150), 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 22:02:49,821 INFO L175 Difference]: Start difference. First operand has 169 places, 219 transitions, 2142 flow. Second operand 24 states and 1966 transitions. [2023-11-06 22:02:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 282 transitions, 3137 flow [2023-11-06 22:02:49,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 282 transitions, 2885 flow, removed 97 selfloop flow, removed 13 redundant places. [2023-11-06 22:02:49,854 INFO L231 Difference]: Finished difference. Result has 175 places, 229 transitions, 2208 flow [2023-11-06 22:02:49,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2208, PETRI_PLACES=175, PETRI_TRANSITIONS=229} [2023-11-06 22:02:49,855 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2023-11-06 22:02:49,855 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 229 transitions, 2208 flow [2023-11-06 22:02:49,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.70833333333333) internal successors, (1913), 24 states have internal predecessors, (1913), 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 22:02:49,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:49,856 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:49,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:50,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-06 22:02:50,056 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:50,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1864355908, now seen corresponding path program 15 times [2023-11-06 22:02:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122487961] [2023-11-06 22:02:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:50,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122487961] [2023-11-06 22:02:50,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122487961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:50,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573050748] [2023-11-06 22:02:50,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:02:50,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:50,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:50,240 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:50,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:02:50,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:02:50,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:50,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:50,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:50,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573050748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:50,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:50,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673048674] [2023-11-06 22:02:50,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:50,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:51,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:51,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 229 transitions, 2208 flow. Second operand has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:51,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:51,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:51,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:52,589 INFO L124 PetriNetUnfolderBase]: 543/1078 cut-off events. [2023-11-06 22:02:52,589 INFO L125 PetriNetUnfolderBase]: For 3148/3148 co-relation queries the response was YES. [2023-11-06 22:02:52,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 1078 events. 543/1078 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6007 event pairs, 3 based on Foata normal form. 6/1084 useless extension candidates. Maximal degree in co-relation 5239. Up to 799 conditions per place. [2023-11-06 22:02:52,598 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 254 selfloop transitions, 57 changer transitions 35/346 dead transitions. [2023-11-06 22:02:52,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 346 transitions, 3673 flow [2023-11-06 22:02:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:02:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-06 22:02:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2880 transitions. [2023-11-06 22:02:52,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944521497919555 [2023-11-06 22:02:52,603 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2880 transitions. [2023-11-06 22:02:52,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2880 transitions. [2023-11-06 22:02:52,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:52,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2880 transitions. [2023-11-06 22:02:52,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 82.28571428571429) internal successors, (2880), 35 states have internal predecessors, (2880), 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 22:02:52,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 206.0) internal successors, (7416), 36 states have internal predecessors, (7416), 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 22:02:52,615 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 206.0) internal successors, (7416), 36 states have internal predecessors, (7416), 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 22:02:52,615 INFO L175 Difference]: Start difference. First operand has 175 places, 229 transitions, 2208 flow. Second operand 35 states and 2880 transitions. [2023-11-06 22:02:52,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 346 transitions, 3673 flow [2023-11-06 22:02:52,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 346 transitions, 3505 flow, removed 63 selfloop flow, removed 12 redundant places. [2023-11-06 22:02:52,656 INFO L231 Difference]: Finished difference. Result has 206 places, 253 transitions, 2615 flow [2023-11-06 22:02:52,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2615, PETRI_PLACES=206, PETRI_TRANSITIONS=253} [2023-11-06 22:02:52,657 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2023-11-06 22:02:52,658 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 253 transitions, 2615 flow [2023-11-06 22:02:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.83333333333333) internal successors, (1916), 24 states have internal predecessors, (1916), 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 22:02:52,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:52,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:52,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:52,864 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:52,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 883731327, now seen corresponding path program 9 times [2023-11-06 22:02:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230549314] [2023-11-06 22:02:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:53,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230549314] [2023-11-06 22:02:53,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230549314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895022482] [2023-11-06 22:02:53,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:02:53,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:53,047 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:53,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:02:53,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:02:53,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:53,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:53,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:53,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895022482] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:53,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:53,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-06 22:02:53,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685613884] [2023-11-06 22:02:53,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:53,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:02:53,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:02:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:02:53,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:53,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 253 transitions, 2615 flow. Second operand has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 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 22:02:53,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:53,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:53,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:54,338 INFO L124 PetriNetUnfolderBase]: 540/1084 cut-off events. [2023-11-06 22:02:54,338 INFO L125 PetriNetUnfolderBase]: For 3678/3678 co-relation queries the response was YES. [2023-11-06 22:02:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 1084 events. 540/1084 cut-off events. For 3678/3678 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6118 event pairs, 3 based on Foata normal form. 9/1091 useless extension candidates. Maximal degree in co-relation 5456. Up to 760 conditions per place. [2023-11-06 22:02:54,346 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 235 selfloop transitions, 52 changer transitions 34/321 dead transitions. [2023-11-06 22:02:54,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 321 transitions, 3731 flow [2023-11-06 22:02:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:02:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:02:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1813 transitions. [2023-11-06 22:02:54,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000441306266549 [2023-11-06 22:02:54,348 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1813 transitions. [2023-11-06 22:02:54,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1813 transitions. [2023-11-06 22:02:54,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:54,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1813 transitions. [2023-11-06 22:02:54,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 82.4090909090909) internal successors, (1813), 22 states have internal predecessors, (1813), 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 22:02:54,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:54,356 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:02:54,356 INFO L175 Difference]: Start difference. First operand has 206 places, 253 transitions, 2615 flow. Second operand 22 states and 1813 transitions. [2023-11-06 22:02:54,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 321 transitions, 3731 flow [2023-11-06 22:02:54,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 321 transitions, 3381 flow, removed 159 selfloop flow, removed 12 redundant places. [2023-11-06 22:02:54,398 INFO L231 Difference]: Finished difference. Result has 212 places, 256 transitions, 2570 flow [2023-11-06 22:02:54,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2570, PETRI_PLACES=212, PETRI_TRANSITIONS=256} [2023-11-06 22:02:54,399 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2023-11-06 22:02:54,399 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 256 transitions, 2570 flow [2023-11-06 22:02:54,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 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 22:02:54,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:54,399 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:54,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:54,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-06 22:02:54,600 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:54,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1771235008, now seen corresponding path program 16 times [2023-11-06 22:02:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267525169] [2023-11-06 22:02:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267525169] [2023-11-06 22:02:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267525169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107671600] [2023-11-06 22:02:54,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:02:54,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:54,784 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:54,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:02:54,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:02:54,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:54,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:02:54,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:55,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107671600] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:55,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-11-06 22:02:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821998940] [2023-11-06 22:02:55,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:55,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:02:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:02:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:02:55,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:55,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 256 transitions, 2570 flow. Second operand has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 24 states have internal predecessors, (1918), 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 22:02:55,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:55,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:55,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:56,715 INFO L124 PetriNetUnfolderBase]: 508/986 cut-off events. [2023-11-06 22:02:56,716 INFO L125 PetriNetUnfolderBase]: For 3354/3354 co-relation queries the response was YES. [2023-11-06 22:02:56,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4952 conditions, 986 events. 508/986 cut-off events. For 3354/3354 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5173 event pairs, 3 based on Foata normal form. 3/987 useless extension candidates. Maximal degree in co-relation 4892. Up to 817 conditions per place. [2023-11-06 22:02:56,724 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 229 selfloop transitions, 46 changer transitions 27/302 dead transitions. [2023-11-06 22:02:56,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 302 transitions, 3316 flow [2023-11-06 22:02:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:02:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:02:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1977 transitions. [2023-11-06 22:02:56,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39987864077669905 [2023-11-06 22:02:56,727 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1977 transitions. [2023-11-06 22:02:56,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1977 transitions. [2023-11-06 22:02:56,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:56,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1977 transitions. [2023-11-06 22:02:56,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.375) internal successors, (1977), 24 states have internal predecessors, (1977), 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 22:02:56,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 206.0) internal successors, (5150), 25 states have internal predecessors, (5150), 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 22:02:56,735 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 206.0) internal successors, (5150), 25 states have internal predecessors, (5150), 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 22:02:56,735 INFO L175 Difference]: Start difference. First operand has 212 places, 256 transitions, 2570 flow. Second operand 24 states and 1977 transitions. [2023-11-06 22:02:56,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 302 transitions, 3316 flow [2023-11-06 22:02:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 302 transitions, 3101 flow, removed 77 selfloop flow, removed 13 redundant places. [2023-11-06 22:02:56,786 INFO L231 Difference]: Finished difference. Result has 209 places, 250 transitions, 2428 flow [2023-11-06 22:02:56,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2428, PETRI_PLACES=209, PETRI_TRANSITIONS=250} [2023-11-06 22:02:56,787 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2023-11-06 22:02:56,787 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 250 transitions, 2428 flow [2023-11-06 22:02:56,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.91666666666667) internal successors, (1918), 24 states have internal predecessors, (1918), 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 22:02:56,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:56,788 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:56,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:02:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:56,994 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:56,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1985807883, now seen corresponding path program 10 times [2023-11-06 22:02:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:56,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773556251] [2023-11-06 22:02:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773556251] [2023-11-06 22:02:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773556251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112607703] [2023-11-06 22:02:57,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:02:57,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:57,192 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:57,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:02:57,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:02:57,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:57,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:02:57,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:57,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:02:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112607703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:57,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 21 [2023-11-06 22:02:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314581173] [2023-11-06 22:02:57,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:02:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:02:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:02:57,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:02:57,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 250 transitions, 2428 flow. Second operand has 23 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 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 22:02:57,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:02:57,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:02:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:02:58,805 INFO L124 PetriNetUnfolderBase]: 520/1052 cut-off events. [2023-11-06 22:02:58,805 INFO L125 PetriNetUnfolderBase]: For 3088/3088 co-relation queries the response was YES. [2023-11-06 22:02:58,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5049 conditions, 1052 events. 520/1052 cut-off events. For 3088/3088 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5918 event pairs, 7 based on Foata normal form. 9/1059 useless extension candidates. Maximal degree in co-relation 4992. Up to 645 conditions per place. [2023-11-06 22:02:58,812 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 211 selfloop transitions, 114 changer transitions 13/338 dead transitions. [2023-11-06 22:02:58,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 338 transitions, 3585 flow [2023-11-06 22:02:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:02:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-06 22:02:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2295 transitions. [2023-11-06 22:02:58,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39788488210818307 [2023-11-06 22:02:58,815 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2295 transitions. [2023-11-06 22:02:58,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2295 transitions. [2023-11-06 22:02:58,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:02:58,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2295 transitions. [2023-11-06 22:02:58,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.96428571428571) internal successors, (2295), 28 states have internal predecessors, (2295), 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 22:02:58,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 206.0) internal successors, (5974), 29 states have internal predecessors, (5974), 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 22:02:58,825 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 206.0) internal successors, (5974), 29 states have internal predecessors, (5974), 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 22:02:58,825 INFO L175 Difference]: Start difference. First operand has 209 places, 250 transitions, 2428 flow. Second operand 28 states and 2295 transitions. [2023-11-06 22:02:58,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 338 transitions, 3585 flow [2023-11-06 22:02:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 338 transitions, 3458 flow, removed 23 selfloop flow, removed 15 redundant places. [2023-11-06 22:02:58,865 INFO L231 Difference]: Finished difference. Result has 215 places, 278 transitions, 2907 flow [2023-11-06 22:02:58,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2907, PETRI_PLACES=215, PETRI_TRANSITIONS=278} [2023-11-06 22:02:58,866 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2023-11-06 22:02:58,866 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 278 transitions, 2907 flow [2023-11-06 22:02:58,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 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 22:02:58,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:02:58,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:58,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-06 22:02:59,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-06 22:02:59,067 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:02:59,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:59,067 INFO L85 PathProgramCache]: Analyzing trace with hash -688876095, now seen corresponding path program 11 times [2023-11-06 22:02:59,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:59,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182799828] [2023-11-06 22:02:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:59,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182799828] [2023-11-06 22:02:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182799828] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:02:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896145400] [2023-11-06 22:02:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:02:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:02:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:02:59,268 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:02:59,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:02:59,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:02:59,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:02:59,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:02:59,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:02:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:59,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:02:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:02:59,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896145400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:02:59,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:02:59,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-06 22:02:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787376985] [2023-11-06 22:02:59,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:02:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:02:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:02:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:03:00,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:00,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 278 transitions, 2907 flow. Second operand has 27 states, 27 states have (on average 79.62962962962963) internal successors, (2150), 27 states have internal predecessors, (2150), 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 22:03:00,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:00,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:00,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:01,280 INFO L124 PetriNetUnfolderBase]: 535/1074 cut-off events. [2023-11-06 22:03:01,280 INFO L125 PetriNetUnfolderBase]: For 3570/3570 co-relation queries the response was YES. [2023-11-06 22:03:01,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1074 events. 535/1074 cut-off events. For 3570/3570 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6014 event pairs, 11 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 5439. Up to 819 conditions per place. [2023-11-06 22:03:01,288 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 245 selfloop transitions, 88 changer transitions 20/353 dead transitions. [2023-11-06 22:03:01,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 353 transitions, 3947 flow [2023-11-06 22:03:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:03:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-06 22:03:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2312 transitions. [2023-11-06 22:03:01,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40083217753120665 [2023-11-06 22:03:01,292 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2312 transitions. [2023-11-06 22:03:01,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2312 transitions. [2023-11-06 22:03:01,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:01,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2312 transitions. [2023-11-06 22:03:01,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.57142857142857) internal successors, (2312), 28 states have internal predecessors, (2312), 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 22:03:01,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 206.0) internal successors, (5974), 29 states have internal predecessors, (5974), 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 22:03:01,302 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 206.0) internal successors, (5974), 29 states have internal predecessors, (5974), 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 22:03:01,302 INFO L175 Difference]: Start difference. First operand has 215 places, 278 transitions, 2907 flow. Second operand 28 states and 2312 transitions. [2023-11-06 22:03:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 353 transitions, 3947 flow [2023-11-06 22:03:01,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 353 transitions, 3872 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-06 22:03:01,354 INFO L231 Difference]: Finished difference. Result has 235 places, 286 transitions, 3106 flow [2023-11-06 22:03:01,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3106, PETRI_PLACES=235, PETRI_TRANSITIONS=286} [2023-11-06 22:03:01,355 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2023-11-06 22:03:01,355 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 286 transitions, 3106 flow [2023-11-06 22:03:01,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 79.62962962962963) internal successors, (2150), 27 states have internal predecessors, (2150), 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 22:03:01,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:01,356 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:01,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:03:01,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-06 22:03:01,561 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:01,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1831837814, now seen corresponding path program 12 times [2023-11-06 22:03:01,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:01,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26841606] [2023-11-06 22:03:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:01,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26841606] [2023-11-06 22:03:01,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26841606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:01,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269865418] [2023-11-06 22:03:01,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:03:01,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:01,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:01,750 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:01,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-06 22:03:01,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:03:01,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:01,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:03:01,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:02,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269865418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:02,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 22 [2023-11-06 22:03:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105344026] [2023-11-06 22:03:02,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:03:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:03:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:03:02,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:02,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 286 transitions, 3106 flow. Second operand has 24 states, 24 states have (on average 79.70833333333333) internal successors, (1913), 24 states have internal predecessors, (1913), 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 22:03:02,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:02,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:02,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:02,842 INFO L124 PetriNetUnfolderBase]: 534/1076 cut-off events. [2023-11-06 22:03:02,843 INFO L125 PetriNetUnfolderBase]: For 4151/4151 co-relation queries the response was YES. [2023-11-06 22:03:02,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5762 conditions, 1076 events. 534/1076 cut-off events. For 4151/4151 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6026 event pairs, 13 based on Foata normal form. 3/1077 useless extension candidates. Maximal degree in co-relation 5695. Up to 971 conditions per place. [2023-11-06 22:03:02,851 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 275 selfloop transitions, 20 changer transitions 28/323 dead transitions. [2023-11-06 22:03:02,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 323 transitions, 3921 flow [2023-11-06 22:03:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:03:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:03:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1392 transitions. [2023-11-06 22:03:02,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974871501998858 [2023-11-06 22:03:02,855 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1392 transitions. [2023-11-06 22:03:02,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1392 transitions. [2023-11-06 22:03:02,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:02,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1392 transitions. [2023-11-06 22:03:02,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 81.88235294117646) internal successors, (1392), 17 states have internal predecessors, (1392), 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 22:03:02,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 206.0) internal successors, (3708), 18 states have internal predecessors, (3708), 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 22:03:02,860 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 206.0) internal successors, (3708), 18 states have internal predecessors, (3708), 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 22:03:02,860 INFO L175 Difference]: Start difference. First operand has 235 places, 286 transitions, 3106 flow. Second operand 17 states and 1392 transitions. [2023-11-06 22:03:02,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 323 transitions, 3921 flow [2023-11-06 22:03:02,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 323 transitions, 3760 flow, removed 49 selfloop flow, removed 15 redundant places. [2023-11-06 22:03:02,901 INFO L231 Difference]: Finished difference. Result has 236 places, 280 transitions, 2956 flow [2023-11-06 22:03:02,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2956, PETRI_PLACES=236, PETRI_TRANSITIONS=280} [2023-11-06 22:03:02,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2023-11-06 22:03:02,902 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 280 transitions, 2956 flow [2023-11-06 22:03:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 79.70833333333333) internal successors, (1913), 24 states have internal predecessors, (1913), 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 22:03:02,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:02,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:02,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-06 22:03:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-06 22:03:03,103 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:03,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1663268121, now seen corresponding path program 13 times [2023-11-06 22:03:03,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:03,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139400945] [2023-11-06 22:03:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:03,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139400945] [2023-11-06 22:03:03,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139400945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034445426] [2023-11-06 22:03:03,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:03:03,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:03,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:03,337 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:03,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-06 22:03:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:03,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:03:03,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:03,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:03,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034445426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:03,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:03,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-06 22:03:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906876543] [2023-11-06 22:03:03,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:03,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:03:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:03:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:03:04,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:04,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 280 transitions, 2956 flow. Second operand has 27 states, 27 states have (on average 79.55555555555556) internal successors, (2148), 27 states have internal predecessors, (2148), 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 22:03:04,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:04,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:05,078 INFO L124 PetriNetUnfolderBase]: 548/1096 cut-off events. [2023-11-06 22:03:05,078 INFO L125 PetriNetUnfolderBase]: For 4473/4473 co-relation queries the response was YES. [2023-11-06 22:03:05,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5817 conditions, 1096 events. 548/1096 cut-off events. For 4473/4473 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6117 event pairs, 11 based on Foata normal form. 5/1099 useless extension candidates. Maximal degree in co-relation 5747. Up to 957 conditions per place. [2023-11-06 22:03:05,088 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 282 selfloop transitions, 51 changer transitions 9/342 dead transitions. [2023-11-06 22:03:05,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 342 transitions, 4045 flow [2023-11-06 22:03:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:03:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:03:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1650 transitions. [2023-11-06 22:03:05,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40048543689320387 [2023-11-06 22:03:05,100 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1650 transitions. [2023-11-06 22:03:05,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1650 transitions. [2023-11-06 22:03:05,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:05,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1650 transitions. [2023-11-06 22:03:05,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.5) internal successors, (1650), 20 states have internal predecessors, (1650), 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 22:03:05,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 206.0) internal successors, (4326), 21 states have internal predecessors, (4326), 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 22:03:05,119 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 206.0) internal successors, (4326), 21 states have internal predecessors, (4326), 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 22:03:05,119 INFO L175 Difference]: Start difference. First operand has 236 places, 280 transitions, 2956 flow. Second operand 20 states and 1650 transitions. [2023-11-06 22:03:05,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 342 transitions, 4045 flow [2023-11-06 22:03:05,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 342 transitions, 3957 flow, removed 13 selfloop flow, removed 16 redundant places. [2023-11-06 22:03:05,173 INFO L231 Difference]: Finished difference. Result has 231 places, 302 transitions, 3324 flow [2023-11-06 22:03:05,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3324, PETRI_PLACES=231, PETRI_TRANSITIONS=302} [2023-11-06 22:03:05,174 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 202 predicate places. [2023-11-06 22:03:05,175 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 302 transitions, 3324 flow [2023-11-06 22:03:05,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 79.55555555555556) internal successors, (2148), 27 states have internal predecessors, (2148), 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 22:03:05,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:05,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:05,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:03:05,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-06 22:03:05,381 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:05,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1635562491, now seen corresponding path program 14 times [2023-11-06 22:03:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:05,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991554481] [2023-11-06 22:03:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991554481] [2023-11-06 22:03:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991554481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090221705] [2023-11-06 22:03:05,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:03:05,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:05,617 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:05,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-06 22:03:05,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:03:05,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:05,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:03:05,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:05,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090221705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:06,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:06,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-06 22:03:06,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478817236] [2023-11-06 22:03:06,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:03:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:06,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:03:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:03:06,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:06,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 302 transitions, 3324 flow. Second operand has 27 states, 27 states have (on average 79.55555555555556) internal successors, (2148), 27 states have internal predecessors, (2148), 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 22:03:06,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:06,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:06,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:07,245 INFO L124 PetriNetUnfolderBase]: 544/1082 cut-off events. [2023-11-06 22:03:07,245 INFO L125 PetriNetUnfolderBase]: For 4720/4720 co-relation queries the response was YES. [2023-11-06 22:03:07,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1082 events. 544/1082 cut-off events. For 4720/4720 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5981 event pairs, 11 based on Foata normal form. 1/1083 useless extension candidates. Maximal degree in co-relation 5834. Up to 957 conditions per place. [2023-11-06 22:03:07,254 INFO L140 encePairwiseOnDemand]: 197/206 looper letters, 278 selfloop transitions, 50 changer transitions 5/333 dead transitions. [2023-11-06 22:03:07,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 333 transitions, 4079 flow [2023-11-06 22:03:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:03:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:03:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1562 transitions. [2023-11-06 22:03:07,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908022483392946 [2023-11-06 22:03:07,257 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1562 transitions. [2023-11-06 22:03:07,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1562 transitions. [2023-11-06 22:03:07,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:07,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1562 transitions. [2023-11-06 22:03:07,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.21052631578948) internal successors, (1562), 19 states have internal predecessors, (1562), 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 22:03:07,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:03:07,263 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:03:07,263 INFO L175 Difference]: Start difference. First operand has 231 places, 302 transitions, 3324 flow. Second operand 19 states and 1562 transitions. [2023-11-06 22:03:07,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 333 transitions, 4079 flow [2023-11-06 22:03:07,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 333 transitions, 3884 flow, removed 74 selfloop flow, removed 8 redundant places. [2023-11-06 22:03:07,306 INFO L231 Difference]: Finished difference. Result has 240 places, 301 transitions, 3217 flow [2023-11-06 22:03:07,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3217, PETRI_PLACES=240, PETRI_TRANSITIONS=301} [2023-11-06 22:03:07,306 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 211 predicate places. [2023-11-06 22:03:07,307 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 301 transitions, 3217 flow [2023-11-06 22:03:07,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 79.55555555555556) internal successors, (2148), 27 states have internal predecessors, (2148), 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 22:03:07,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:07,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:07,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-06 22:03:07,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:07,508 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:07,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1626240685, now seen corresponding path program 15 times [2023-11-06 22:03:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:07,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640331311] [2023-11-06 22:03:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:07,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640331311] [2023-11-06 22:03:07,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640331311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413854599] [2023-11-06 22:03:07,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:03:07,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:07,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:07,706 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:07,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:03:07,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:03:07,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:07,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:03:07,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:08,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413854599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:08,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 24 [2023-11-06 22:03:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274159861] [2023-11-06 22:03:08,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:03:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:03:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:03:08,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:08,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 301 transitions, 3217 flow. Second operand has 26 states, 26 states have (on average 79.61538461538461) internal successors, (2070), 26 states have internal predecessors, (2070), 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 22:03:08,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:08,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:09,192 INFO L124 PetriNetUnfolderBase]: 568/1138 cut-off events. [2023-11-06 22:03:09,192 INFO L125 PetriNetUnfolderBase]: For 4911/4911 co-relation queries the response was YES. [2023-11-06 22:03:09,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 1138 events. 568/1138 cut-off events. For 4911/4911 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6347 event pairs, 13 based on Foata normal form. 9/1145 useless extension candidates. Maximal degree in co-relation 6084. Up to 1036 conditions per place. [2023-11-06 22:03:09,200 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 295 selfloop transitions, 30 changer transitions 21/346 dead transitions. [2023-11-06 22:03:09,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 346 transitions, 4230 flow [2023-11-06 22:03:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:03:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:03:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1474 transitions. [2023-11-06 22:03:09,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39751887810140235 [2023-11-06 22:03:09,203 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1474 transitions. [2023-11-06 22:03:09,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1474 transitions. [2023-11-06 22:03:09,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:09,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1474 transitions. [2023-11-06 22:03:09,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 81.88888888888889) internal successors, (1474), 18 states have internal predecessors, (1474), 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 22:03:09,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:03:09,209 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:03:09,209 INFO L175 Difference]: Start difference. First operand has 240 places, 301 transitions, 3217 flow. Second operand 18 states and 1474 transitions. [2023-11-06 22:03:09,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 346 transitions, 4230 flow [2023-11-06 22:03:09,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 346 transitions, 4109 flow, removed 3 selfloop flow, removed 18 redundant places. [2023-11-06 22:03:09,252 INFO L231 Difference]: Finished difference. Result has 242 places, 311 transitions, 3365 flow [2023-11-06 22:03:09,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3092, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3365, PETRI_PLACES=242, PETRI_TRANSITIONS=311} [2023-11-06 22:03:09,252 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2023-11-06 22:03:09,252 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 311 transitions, 3365 flow [2023-11-06 22:03:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 79.61538461538461) internal successors, (2070), 26 states have internal predecessors, (2070), 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 22:03:09,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:09,253 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:09,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-06 22:03:09,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:09,453 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:09,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1924024113, now seen corresponding path program 16 times [2023-11-06 22:03:09,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:09,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162473513] [2023-11-06 22:03:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:09,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:09,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162473513] [2023-11-06 22:03:09,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162473513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:09,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797291940] [2023-11-06 22:03:09,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:03:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:09,664 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:09,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-06 22:03:09,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:03:09,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:09,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:03:09,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:09,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:03:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797291940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:10,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:10,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2023-11-06 22:03:10,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359013758] [2023-11-06 22:03:10,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:10,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:03:10,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:03:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:03:10,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:10,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 311 transitions, 3365 flow. Second operand has 22 states, 22 states have (on average 79.5909090909091) internal successors, (1751), 22 states have internal predecessors, (1751), 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 22:03:10,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:10,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:11,049 INFO L124 PetriNetUnfolderBase]: 569/1116 cut-off events. [2023-11-06 22:03:11,049 INFO L125 PetriNetUnfolderBase]: For 5565/5565 co-relation queries the response was YES. [2023-11-06 22:03:11,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 1116 events. 569/1116 cut-off events. For 5565/5565 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6145 event pairs, 13 based on Foata normal form. 8/1120 useless extension candidates. Maximal degree in co-relation 6070. Up to 871 conditions per place. [2023-11-06 22:03:11,058 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 268 selfloop transitions, 62 changer transitions 20/350 dead transitions. [2023-11-06 22:03:11,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 350 transitions, 4323 flow [2023-11-06 22:03:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:03:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:03:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1559 transitions. [2023-11-06 22:03:11,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983137455288707 [2023-11-06 22:03:11,061 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1559 transitions. [2023-11-06 22:03:11,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1559 transitions. [2023-11-06 22:03:11,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:11,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1559 transitions. [2023-11-06 22:03:11,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.05263157894737) internal successors, (1559), 19 states have internal predecessors, (1559), 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 22:03:11,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:03:11,065 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:03:11,065 INFO L175 Difference]: Start difference. First operand has 242 places, 311 transitions, 3365 flow. Second operand 19 states and 1559 transitions. [2023-11-06 22:03:11,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 350 transitions, 4323 flow [2023-11-06 22:03:11,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 350 transitions, 4173 flow, removed 65 selfloop flow, removed 9 redundant places. [2023-11-06 22:03:11,111 INFO L231 Difference]: Finished difference. Result has 249 places, 309 transitions, 3404 flow [2023-11-06 22:03:11,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3404, PETRI_PLACES=249, PETRI_TRANSITIONS=309} [2023-11-06 22:03:11,112 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2023-11-06 22:03:11,112 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 309 transitions, 3404 flow [2023-11-06 22:03:11,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 79.5909090909091) internal successors, (1751), 22 states have internal predecessors, (1751), 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 22:03:11,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:11,112 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:11,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:03:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:11,313 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:11,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash 683012566, now seen corresponding path program 17 times [2023-11-06 22:03:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:11,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742406771] [2023-11-06 22:03:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:11,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:11,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742406771] [2023-11-06 22:03:11,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742406771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:11,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750627299] [2023-11-06 22:03:11,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:03:11,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:11,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:11,470 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:11,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-06 22:03:11,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-06 22:03:11,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:11,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:03:11,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:11,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750627299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:11,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2023-11-06 22:03:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858755694] [2023-11-06 22:03:11,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:11,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:03:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:03:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:03:12,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:12,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 309 transitions, 3404 flow. Second operand has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 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 22:03:12,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:12,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:12,609 INFO L124 PetriNetUnfolderBase]: 561/1086 cut-off events. [2023-11-06 22:03:12,609 INFO L125 PetriNetUnfolderBase]: For 5648/5648 co-relation queries the response was YES. [2023-11-06 22:03:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6055 conditions, 1086 events. 561/1086 cut-off events. For 5648/5648 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5871 event pairs, 13 based on Foata normal form. 4/1086 useless extension candidates. Maximal degree in co-relation 5975. Up to 806 conditions per place. [2023-11-06 22:03:12,616 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 222 selfloop transitions, 4 changer transitions 112/338 dead transitions. [2023-11-06 22:03:12,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 338 transitions, 4211 flow [2023-11-06 22:03:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:03:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:03:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1471 transitions. [2023-11-06 22:03:12,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39670981661272925 [2023-11-06 22:03:12,619 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1471 transitions. [2023-11-06 22:03:12,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1471 transitions. [2023-11-06 22:03:12,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:12,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1471 transitions. [2023-11-06 22:03:12,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 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 22:03:12,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:03:12,622 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 206.0) internal successors, (3914), 19 states have internal predecessors, (3914), 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 22:03:12,622 INFO L175 Difference]: Start difference. First operand has 249 places, 309 transitions, 3404 flow. Second operand 18 states and 1471 transitions. [2023-11-06 22:03:12,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 338 transitions, 4211 flow [2023-11-06 22:03:12,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 338 transitions, 3988 flow, removed 37 selfloop flow, removed 25 redundant places. [2023-11-06 22:03:12,670 INFO L231 Difference]: Finished difference. Result has 233 places, 222 transitions, 2232 flow [2023-11-06 22:03:12,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3174, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2232, PETRI_PLACES=233, PETRI_TRANSITIONS=222} [2023-11-06 22:03:12,671 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 204 predicate places. [2023-11-06 22:03:12,671 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 222 transitions, 2232 flow [2023-11-06 22:03:12,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 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 22:03:12,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:12,671 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:12,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-06 22:03:12,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:12,872 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:12,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1308198837, now seen corresponding path program 18 times [2023-11-06 22:03:12,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:12,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717240084] [2023-11-06 22:03:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:03:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717240084] [2023-11-06 22:03:13,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717240084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576756341] [2023-11-06 22:03:13,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:03:13,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:13,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:13,056 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:13,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-06 22:03:13,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:03:13,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:13,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:03:13,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:13,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:03:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576756341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:13,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 20 [2023-11-06 22:03:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187151136] [2023-11-06 22:03:13,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:13,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:03:13,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:03:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:03:13,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:13,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 222 transitions, 2232 flow. Second operand has 22 states, 22 states have (on average 79.68181818181819) internal successors, (1753), 22 states have internal predecessors, (1753), 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 22:03:13,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:13,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:13,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:14,341 INFO L124 PetriNetUnfolderBase]: 422/858 cut-off events. [2023-11-06 22:03:14,342 INFO L125 PetriNetUnfolderBase]: For 3626/3626 co-relation queries the response was YES. [2023-11-06 22:03:14,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4388 conditions, 858 events. 422/858 cut-off events. For 3626/3626 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4540 event pairs, 3 based on Foata normal form. 7/861 useless extension candidates. Maximal degree in co-relation 4318. Up to 513 conditions per place. [2023-11-06 22:03:14,393 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 178 selfloop transitions, 87 changer transitions 28/293 dead transitions. [2023-11-06 22:03:14,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 293 transitions, 3167 flow [2023-11-06 22:03:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:03:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 22:03:14,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2145 transitions. [2023-11-06 22:03:14,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40048543689320387 [2023-11-06 22:03:14,397 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2145 transitions. [2023-11-06 22:03:14,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2145 transitions. [2023-11-06 22:03:14,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:14,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2145 transitions. [2023-11-06 22:03:14,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.5) internal successors, (2145), 26 states have internal predecessors, (2145), 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 22:03:14,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 206.0) internal successors, (5562), 27 states have internal predecessors, (5562), 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 22:03:14,405 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 206.0) internal successors, (5562), 27 states have internal predecessors, (5562), 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 22:03:14,405 INFO L175 Difference]: Start difference. First operand has 233 places, 222 transitions, 2232 flow. Second operand 26 states and 2145 transitions. [2023-11-06 22:03:14,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 293 transitions, 3167 flow [2023-11-06 22:03:14,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 293 transitions, 2999 flow, removed 54 selfloop flow, removed 26 redundant places. [2023-11-06 22:03:14,431 INFO L231 Difference]: Finished difference. Result has 183 places, 223 transitions, 2314 flow [2023-11-06 22:03:14,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2314, PETRI_PLACES=183, PETRI_TRANSITIONS=223} [2023-11-06 22:03:14,432 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2023-11-06 22:03:14,432 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 223 transitions, 2314 flow [2023-11-06 22:03:14,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 79.68181818181819) internal successors, (1753), 22 states have internal predecessors, (1753), 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 22:03:14,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:14,433 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:14,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:03:14,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-06 22:03:14,638 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:14,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2061266833, now seen corresponding path program 19 times [2023-11-06 22:03:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:14,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456573184] [2023-11-06 22:03:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:14,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:14,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456573184] [2023-11-06 22:03:14,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456573184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574256605] [2023-11-06 22:03:14,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:03:14,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:14,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:14,793 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:14,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-06 22:03:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:14,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:03:14,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:15,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:03:15,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574256605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:15,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:15,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 19 [2023-11-06 22:03:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722857445] [2023-11-06 22:03:15,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:15,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:03:15,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:03:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:03:15,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:15,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 223 transitions, 2314 flow. Second operand has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 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 22:03:15,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:15,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:15,991 INFO L124 PetriNetUnfolderBase]: 383/744 cut-off events. [2023-11-06 22:03:15,992 INFO L125 PetriNetUnfolderBase]: For 2260/2260 co-relation queries the response was YES. [2023-11-06 22:03:15,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 744 events. 383/744 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3585 event pairs, 2 based on Foata normal form. 10/748 useless extension candidates. Maximal degree in co-relation 3851. Up to 227 conditions per place. [2023-11-06 22:03:15,996 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 46 selfloop transitions, 44 changer transitions 174/264 dead transitions. [2023-11-06 22:03:15,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 264 transitions, 2976 flow [2023-11-06 22:03:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:03:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:03:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1799 transitions. [2023-11-06 22:03:15,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396954986760812 [2023-11-06 22:03:15,999 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1799 transitions. [2023-11-06 22:03:15,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1799 transitions. [2023-11-06 22:03:15,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:15,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1799 transitions. [2023-11-06 22:03:16,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 81.77272727272727) internal successors, (1799), 22 states have internal predecessors, (1799), 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 22:03:16,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:03:16,002 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 206.0) internal successors, (4738), 23 states have internal predecessors, (4738), 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 22:03:16,003 INFO L175 Difference]: Start difference. First operand has 183 places, 223 transitions, 2314 flow. Second operand 22 states and 1799 transitions. [2023-11-06 22:03:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 264 transitions, 2976 flow [2023-11-06 22:03:16,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 264 transitions, 2781 flow, removed 27 selfloop flow, removed 16 redundant places. [2023-11-06 22:03:16,026 INFO L231 Difference]: Finished difference. Result has 178 places, 66 transitions, 636 flow [2023-11-06 22:03:16,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=636, PETRI_PLACES=178, PETRI_TRANSITIONS=66} [2023-11-06 22:03:16,026 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2023-11-06 22:03:16,026 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 66 transitions, 636 flow [2023-11-06 22:03:16,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 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 22:03:16,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:16,027 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:16,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-06 22:03:16,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-06 22:03:16,227 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:16,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1369474119, now seen corresponding path program 20 times [2023-11-06 22:03:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:16,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899016728] [2023-11-06 22:03:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:16,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899016728] [2023-11-06 22:03:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899016728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:16,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119653142] [2023-11-06 22:03:16,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:03:16,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:16,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:16,403 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:16,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-06 22:03:16,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:03:16,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:16,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:03:16,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:16,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:03:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119653142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:16,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:16,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 20 [2023-11-06 22:03:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629289384] [2023-11-06 22:03:16,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:03:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:03:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:03:17,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:17,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 66 transitions, 636 flow. Second operand has 22 states, 22 states have (on average 79.5909090909091) internal successors, (1751), 22 states have internal predecessors, (1751), 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 22:03:17,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:17,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:17,771 INFO L124 PetriNetUnfolderBase]: 100/266 cut-off events. [2023-11-06 22:03:17,771 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2023-11-06 22:03:17,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 266 events. 100/266 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1124 event pairs, 0 based on Foata normal form. 7/273 useless extension candidates. Maximal degree in co-relation 1141. Up to 53 conditions per place. [2023-11-06 22:03:17,772 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 27 selfloop transitions, 18 changer transitions 62/107 dead transitions. [2023-11-06 22:03:17,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 107 transitions, 962 flow [2023-11-06 22:03:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:03:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 22:03:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2112 transitions. [2023-11-06 22:03:17,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943241224794623 [2023-11-06 22:03:17,774 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2112 transitions. [2023-11-06 22:03:17,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2112 transitions. [2023-11-06 22:03:17,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:17,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2112 transitions. [2023-11-06 22:03:17,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 81.23076923076923) internal successors, (2112), 26 states have internal predecessors, (2112), 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 22:03:17,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 206.0) internal successors, (5562), 27 states have internal predecessors, (5562), 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 22:03:17,779 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 206.0) internal successors, (5562), 27 states have internal predecessors, (5562), 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 22:03:17,779 INFO L175 Difference]: Start difference. First operand has 178 places, 66 transitions, 636 flow. Second operand 26 states and 2112 transitions. [2023-11-06 22:03:17,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 107 transitions, 962 flow [2023-11-06 22:03:17,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 107 transitions, 724 flow, removed 28 selfloop flow, removed 35 redundant places. [2023-11-06 22:03:17,784 INFO L231 Difference]: Finished difference. Result has 118 places, 30 transitions, 186 flow [2023-11-06 22:03:17,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=186, PETRI_PLACES=118, PETRI_TRANSITIONS=30} [2023-11-06 22:03:17,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2023-11-06 22:03:17,785 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 30 transitions, 186 flow [2023-11-06 22:03:17,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 79.5909090909091) internal successors, (1751), 22 states have internal predecessors, (1751), 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 22:03:17,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:17,785 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:17,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-06 22:03:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-06 22:03:17,986 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:03:17,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1089890186, now seen corresponding path program 21 times [2023-11-06 22:03:17,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:17,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596202026] [2023-11-06 22:03:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:17,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:03:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596202026] [2023-11-06 22:03:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596202026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614945436] [2023-11-06 22:03:18,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:03:18,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:18,203 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-06 22:03:18,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:03:18,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:03:18,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:03:18,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:18,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:03:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:03:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614945436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:03:18,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:03:18,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 21 [2023-11-06 22:03:18,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727089801] [2023-11-06 22:03:18,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:03:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:03:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:03:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:03:18,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 206 [2023-11-06 22:03:18,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 30 transitions, 186 flow. Second operand has 23 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 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 22:03:18,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:18,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 206 [2023-11-06 22:03:18,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:19,353 INFO L124 PetriNetUnfolderBase]: 41/119 cut-off events. [2023-11-06 22:03:19,354 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 22:03:19,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 119 events. 41/119 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 385 event pairs, 0 based on Foata normal form. 7/126 useless extension candidates. Maximal degree in co-relation 404. Up to 25 conditions per place. [2023-11-06 22:03:19,354 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-11-06 22:03:19,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 62 transitions, 398 flow [2023-11-06 22:03:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:03:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:03:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1542 transitions. [2023-11-06 22:03:19,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939703628002044 [2023-11-06 22:03:19,357 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1542 transitions. [2023-11-06 22:03:19,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1542 transitions. [2023-11-06 22:03:19,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:19,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1542 transitions. [2023-11-06 22:03:19,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 81.15789473684211) internal successors, (1542), 19 states have internal predecessors, (1542), 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 22:03:19,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:03:19,360 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 206.0) internal successors, (4120), 20 states have internal predecessors, (4120), 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 22:03:19,360 INFO L175 Difference]: Start difference. First operand has 118 places, 30 transitions, 186 flow. Second operand 19 states and 1542 transitions. [2023-11-06 22:03:19,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 62 transitions, 398 flow [2023-11-06 22:03:19,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 62 transitions, 325 flow, removed 13 selfloop flow, removed 22 redundant places. [2023-11-06 22:03:19,362 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-11-06 22:03:19,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-11-06 22:03:19,362 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-11-06 22:03:19,362 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-11-06 22:03:19,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.69565217391305) internal successors, (1833), 23 states have internal predecessors, (1833), 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 22:03:19,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-06 22:03:19,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-06 22:03:19,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-06 22:03:19,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-06 22:03:19,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-06 22:03:19,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-06 22:03:19,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:19,567 INFO L445 BasicCegarLoop]: Path program histogram: [21, 16, 6, 1, 1, 1, 1, 1] [2023-11-06 22:03:19,570 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:03:19,570 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:03:19,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:03:19 BasicIcfg [2023-11-06 22:03:19,573 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:03:19,574 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:03:19,574 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:03:19,574 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:03:19,575 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:58" (3/4) ... [2023-11-06 22:03:19,576 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:03:19,579 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:03:19,579 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:03:19,583 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-06 22:03:19,583 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:03:19,584 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:03:19,584 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:03:19,627 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:03:19,627 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:03:19,627 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:03:19,628 INFO L158 Benchmark]: Toolchain (without parser) took 81680.20ms. Allocated memory was 127.9MB in the beginning and 465.6MB in the end (delta: 337.6MB). Free memory was 65.1MB in the beginning and 411.6MB in the end (delta: -346.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:19,628 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:19,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.08ms. Allocated memory is still 184.5MB. Free memory was 156.2MB in the beginning and 148.5MB in the end (delta: 7.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-11-06 22:03:19,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.97ms. Allocated memory is still 184.5MB. Free memory was 148.5MB in the beginning and 147.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:03:19,629 INFO L158 Benchmark]: Boogie Preprocessor took 28.07ms. Allocated memory is still 184.5MB. Free memory was 147.2MB in the beginning and 145.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:19,630 INFO L158 Benchmark]: RCFGBuilder took 649.35ms. Allocated memory is still 184.5MB. Free memory was 145.9MB in the beginning and 129.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:03:19,630 INFO L158 Benchmark]: TraceAbstraction took 80593.31ms. Allocated memory was 184.5MB in the beginning and 465.6MB in the end (delta: 281.0MB). Free memory was 128.3MB in the beginning and 414.7MB in the end (delta: -286.4MB). Peak memory consumption was 256.5MB. Max. memory is 16.1GB. [2023-11-06 22:03:19,630 INFO L158 Benchmark]: Witness Printer took 53.47ms. Allocated memory is still 465.6MB. Free memory was 414.7MB in the beginning and 411.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:03:19,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.08ms. Allocated memory is still 184.5MB. Free memory was 156.2MB in the beginning and 148.5MB in the end (delta: 7.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.97ms. Allocated memory is still 184.5MB. Free memory was 148.5MB in the beginning and 147.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.07ms. Allocated memory is still 184.5MB. Free memory was 147.2MB in the beginning and 145.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 649.35ms. Allocated memory is still 184.5MB. Free memory was 145.9MB in the beginning and 129.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 80593.31ms. Allocated memory was 184.5MB in the beginning and 465.6MB in the end (delta: 281.0MB). Free memory was 128.3MB in the beginning and 414.7MB in the end (delta: -286.4MB). Peak memory consumption was 256.5MB. Max. memory is 16.1GB. * Witness Printer took 53.47ms. Allocated memory is still 465.6MB. Free memory was 414.7MB in the beginning and 411.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 98 PlacesBefore, 29 PlacesAfterwards, 97 TransitionsBefore, 24 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 102 TotalNumberOfCompositions, 862 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 835, independent: 831, independent conditional: 0, independent unconditional: 831, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 402, independent: 400, independent conditional: 0, independent unconditional: 400, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 835, independent: 431, independent conditional: 0, independent unconditional: 431, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 402, unknown conditional: 0, unknown unconditional: 402] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 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 5 procedures, 121 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 80.5s, OverallIterations: 48, TraceHistogramMax: 4, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 42.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7744 SdHoareTripleChecker+Valid, 24.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7048 mSDsluCounter, 4324 SdHoareTripleChecker+Invalid, 20.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4094 mSDsCounter, 1150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39129 IncrementalHoareTripleChecker+Invalid, 40279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1150 mSolverCounterUnsat, 230 mSDtfsCounter, 39129 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1900 GetRequests, 657 SyntacticMatches, 7 SemanticMatches, 1236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12300 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3404occurred in iteration=43, InterpolantAutomatonStates: 903, 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: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 1279 NumberOfCodeBlocks, 1279 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 1749 ConstructedInterpolants, 0 QuantifiedInterpolants, 16026 SizeOfPredicates, 42 NumberOfNonLiveVariables, 4653 ConjunctsInSsa, 762 ConjunctsInUnsatCore, 122 InterpolantComputations, 11 PerfectInterpolantSequences, 44/552 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:03:19,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58867dce-d714-4654-aec0-37c9e999e30d/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