./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/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_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/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_38119fe6-de00-418a-836c-8dab91c5c17d/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 3241bc7a4fb5fce7b9ee4eb3820005fca7c10e90159ff3c3ee85c2790d085281 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:22:03,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:22:03,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:22:03,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:22:03,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:22:03,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:22:03,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:22:03,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:22:03,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:22:03,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:22:03,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:22:03,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:22:03,863 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:22:03,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:22:03,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:22:03,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:22:03,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:22:03,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:22:03,867 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:22:03,868 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:22:03,868 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:22:03,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:22:03,875 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:22:03,876 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:22:03,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:22:03,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:22:03,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:22:03,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:22:03,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:22:03,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:03,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:22:03,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:22:03,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:22:03,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:22:03,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:22:03,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:22:03,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:22:03,891 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:22:03,891 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_38119fe6-de00-418a-836c-8dab91c5c17d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3241bc7a4fb5fce7b9ee4eb3820005fca7c10e90159ff3c3ee85c2790d085281 [2023-11-06 22:22:04,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:22:04,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:22:04,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:22:04,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:22:04,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:22:04,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2023-11-06 22:22:07,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:22:07,634 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:22:07,635 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2023-11-06 22:22:07,644 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/data/5e65f0ce9/00567c6d2bf346c5899269ec38a9da4d/FLAG105026937 [2023-11-06 22:22:07,661 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/data/5e65f0ce9/00567c6d2bf346c5899269ec38a9da4d [2023-11-06 22:22:07,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:22:07,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:22:07,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:07,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:22:07,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:22:07,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:07,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f3b2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07, skipping insertion in model container [2023-11-06 22:22:07,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:07,710 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:22:07,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:07,937 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:22:07,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:07,974 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:22:07,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07 WrapperNode [2023-11-06 22:22:07,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:07,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:22:07,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:22:07,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:22:07,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:07,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,018 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-06 22:22:08,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:22:08,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:22:08,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:22:08,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:22:08,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:22:08,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:22:08,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:22:08,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:22:08,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (1/1) ... [2023-11-06 22:22:08,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:08,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:22:08,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:22:08,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:22:08,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:22:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:22:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:22:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:22:08,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:22:08,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:22:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:22:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:22:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:22:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:22:08,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:22:08,137 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 22:22:08,241 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:22:08,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:22:08,496 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:22:08,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:22:08,506 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:22:08,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:08 BoogieIcfgContainer [2023-11-06 22:22:08,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:22:08,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:22:08,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:22:08,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:22:08,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:22:07" (1/3) ... [2023-11-06 22:22:08,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca6563c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:22:08, skipping insertion in model container [2023-11-06 22:22:08,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:07" (2/3) ... [2023-11-06 22:22:08,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca6563c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:22:08, skipping insertion in model container [2023-11-06 22:22:08,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:08" (3/3) ... [2023-11-06 22:22:08,519 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2023-11-06 22:22:08,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:22:08,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:22:08,538 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:22:08,622 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:22:08,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 204 flow [2023-11-06 22:22:08,732 INFO L124 PetriNetUnfolderBase]: 6/93 cut-off events. [2023-11-06 22:22:08,732 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:22:08,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 6/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-06 22:22:08,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 95 transitions, 204 flow [2023-11-06 22:22:08,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 88 transitions, 188 flow [2023-11-06 22:22:08,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:22:08,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 88 transitions, 188 flow [2023-11-06 22:22:08,768 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 88 transitions, 188 flow [2023-11-06 22:22:08,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 188 flow [2023-11-06 22:22:08,816 INFO L124 PetriNetUnfolderBase]: 6/88 cut-off events. [2023-11-06 22:22:08,816 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:22:08,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 6/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-06 22:22:08,820 INFO L119 LiptonReduction]: Number of co-enabled transitions 348 [2023-11-06 22:22:12,886 INFO L134 LiptonReduction]: Checked pairs total: 430 [2023-11-06 22:22:12,887 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-11-06 22:22:12,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:22:12,911 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;@2c16d5de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:22:12,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 22:22:12,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:22:12,913 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:22:12,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:12,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:12,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:22:12,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:22:12,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash 353, now seen corresponding path program 1 times [2023-11-06 22:22:12,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:12,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296647830] [2023-11-06 22:22:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:13,024 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 22:22:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296647830] [2023-11-06 22:22:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296647830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:22:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822968575] [2023-11-06 22:22:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:22:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:22:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:22:13,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 189 [2023-11-06 22:22:13,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:13,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 189 [2023-11-06 22:22:13,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:13,130 INFO L124 PetriNetUnfolderBase]: 45/80 cut-off events. [2023-11-06 22:22:13,130 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:22:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2023-11-06 22:22:13,133 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-06 22:22:13,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2023-11-06 22:22:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:22:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:22:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2023-11-06 22:22:13,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2023-11-06 22:22:13,150 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 194 transitions. [2023-11-06 22:22:13,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 194 transitions. [2023-11-06 22:22:13,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:13,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 194 transitions. [2023-11-06 22:22:13,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,165 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,167 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 194 transitions. [2023-11-06 22:22:13,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2023-11-06 22:22:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:22:13,173 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2023-11-06 22:22:13,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-11-06 22:22:13,180 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-11-06 22:22:13,180 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2023-11-06 22:22:13,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:13,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:22:13,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:22:13,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:22:13,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash 345582, now seen corresponding path program 1 times [2023-11-06 22:22:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210886372] [2023-11-06 22:22:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:13,450 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 22:22:13,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210886372] [2023-11-06 22:22:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210886372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:13,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:13,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39985966] [2023-11-06 22:22:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:13,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:13,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-11-06 22:22:13,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:13,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-11-06 22:22:13,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:13,573 INFO L124 PetriNetUnfolderBase]: 41/72 cut-off events. [2023-11-06 22:22:13,573 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:13,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2023-11-06 22:22:13,574 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:22:13,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2023-11-06 22:22:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-06 22:22:13,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-11-06 22:22:13,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-06 22:22:13,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-06 22:22:13,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:13,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-06 22:22:13,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,585 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 259 transitions. [2023-11-06 22:22:13,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2023-11-06 22:22:13,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:13,590 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2023-11-06 22:22:13,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-11-06 22:22:13,591 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-11-06 22:22:13,591 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2023-11-06 22:22:13,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:13,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:22:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:22:13,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:22:13,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash 345581, now seen corresponding path program 1 times [2023-11-06 22:22:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:13,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382116249] [2023-11-06 22:22:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:13,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:13,700 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 22:22:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:13,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382116249] [2023-11-06 22:22:13,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382116249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:13,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:13,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:13,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413216596] [2023-11-06 22:22:13,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:13,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:13,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:13,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:13,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 189 [2023-11-06 22:22:13,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:13,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 189 [2023-11-06 22:22:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:13,801 INFO L124 PetriNetUnfolderBase]: 37/64 cut-off events. [2023-11-06 22:22:13,801 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:13,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-11-06 22:22:13,803 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-11-06 22:22:13,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2023-11-06 22:22:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-06 22:22:13,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-11-06 22:22:13,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-06 22:22:13,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-06 22:22:13,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:13,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-06 22:22:13,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,811 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 245 transitions. [2023-11-06 22:22:13,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2023-11-06 22:22:13,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:13,813 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2023-11-06 22:22:13,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-11-06 22:22:13,814 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:22:13,814 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2023-11-06 22:22:13,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:13,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:13,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:22:13,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:22:13,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:22:13,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash 332109738, now seen corresponding path program 1 times [2023-11-06 22:22:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:13,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40478178] [2023-11-06 22:22:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:13,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:14,099 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 22:22:14,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40478178] [2023-11-06 22:22:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40478178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:14,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:22:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706463831] [2023-11-06 22:22:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:14,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:14,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:14,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 189 [2023-11-06 22:22:14,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:14,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 189 [2023-11-06 22:22:14,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:14,213 INFO L124 PetriNetUnfolderBase]: 29/52 cut-off events. [2023-11-06 22:22:14,213 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:14,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2023-11-06 22:22:14,214 INFO L140 encePairwiseOnDemand]: 187/189 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-11-06 22:22:14,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2023-11-06 22:22:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-11-06 22:22:14,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2023-11-06 22:22:14,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-11-06 22:22:14,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-11-06 22:22:14,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:14,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-11-06 22:22:14,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,222 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 249 transitions. [2023-11-06 22:22:14,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2023-11-06 22:22:14,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:14,224 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-06 22:22:14,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-06 22:22:14,225 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:22:14,225 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-06 22:22:14,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:14,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:22:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:22:14,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:22:14,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 332109737, now seen corresponding path program 1 times [2023-11-06 22:22:14,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312867094] [2023-11-06 22:22:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:14,302 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 22:22:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312867094] [2023-11-06 22:22:14,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312867094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:14,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:14,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:22:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914718822] [2023-11-06 22:22:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:14,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-11-06 22:22:14,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:14,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-11-06 22:22:14,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:14,415 INFO L124 PetriNetUnfolderBase]: 21/40 cut-off events. [2023-11-06 22:22:14,416 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:14,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2023-11-06 22:22:14,423 INFO L140 encePairwiseOnDemand]: 187/189 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-11-06 22:22:14,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2023-11-06 22:22:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-11-06 22:22:14,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056437389770723 [2023-11-06 22:22:14,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-11-06 22:22:14,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-11-06 22:22:14,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:14,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-11-06 22:22:14,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,433 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 230 transitions. [2023-11-06 22:22:14,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2023-11-06 22:22:14,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:14,435 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2023-11-06 22:22:14,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-11-06 22:22:14,437 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-11-06 22:22:14,438 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2023-11-06 22:22:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:14,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:14,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:22:14,439 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 22:22:14,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1168305223, now seen corresponding path program 1 times [2023-11-06 22:22:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:14,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860205220] [2023-11-06 22:22:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:14,581 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 22:22:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860205220] [2023-11-06 22:22:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860205220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:14,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:14,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:14,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001755458] [2023-11-06 22:22:14,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:14,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:14,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-11-06 22:22:14,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:14,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-11-06 22:22:14,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:14,692 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2023-11-06 22:22:14,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:14,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 77 events. 41/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 163. Up to 51 conditions per place. [2023-11-06 22:22:14,694 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-11-06 22:22:14,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 23 transitions, 104 flow [2023-11-06 22:22:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-11-06 22:22:14,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2023-11-06 22:22:14,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-11-06 22:22:14,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-11-06 22:22:14,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:14,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-11-06 22:22:14,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:22:14,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,701 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 264 transitions. [2023-11-06 22:22:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 23 transitions, 104 flow [2023-11-06 22:22:14,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 23 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:14,704 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 53 flow [2023-11-06 22:22:14,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-11-06 22:22:14,707 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2023-11-06 22:22:14,711 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 53 flow [2023-11-06 22:22:14,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:14,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:14,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:22:14,713 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 22:22:14,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1872404215, now seen corresponding path program 1 times [2023-11-06 22:22:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:14,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519855635] [2023-11-06 22:22:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519855635] [2023-11-06 22:22:14,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519855635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:14,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:14,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:22:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805532474] [2023-11-06 22:22:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:14,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:14,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-11-06 22:22:14,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:14,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-11-06 22:22:14,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:15,068 INFO L124 PetriNetUnfolderBase]: 39/75 cut-off events. [2023-11-06 22:22:15,068 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-06 22:22:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 75 events. 39/75 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 2 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 193. Up to 28 conditions per place. [2023-11-06 22:22:15,070 INFO L140 encePairwiseOnDemand]: 184/189 looper letters, 24 selfloop transitions, 6 changer transitions 4/34 dead transitions. [2023-11-06 22:22:15,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 34 transitions, 169 flow [2023-11-06 22:22:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:22:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:22:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2023-11-06 22:22:15,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-06 22:22:15,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2023-11-06 22:22:15,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2023-11-06 22:22:15,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:15,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2023-11-06 22:22:15,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,079 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 53 flow. Second operand 5 states and 405 transitions. [2023-11-06 22:22:15,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 34 transitions, 169 flow [2023-11-06 22:22:15,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 34 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:15,082 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 74 flow [2023-11-06 22:22:15,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-11-06 22:22:15,083 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-11-06 22:22:15,083 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 74 flow [2023-11-06 22:22:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:15,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:15,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:22:15,084 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 22:22:15,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1866457755, now seen corresponding path program 2 times [2023-11-06 22:22:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:15,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292545644] [2023-11-06 22:22:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:15,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:15,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292545644] [2023-11-06 22:22:15,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292545644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:15,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:22:15,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160947974] [2023-11-06 22:22:15,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:15,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:15,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-11-06 22:22:15,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:15,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-11-06 22:22:15,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:15,351 INFO L124 PetriNetUnfolderBase]: 44/84 cut-off events. [2023-11-06 22:22:15,351 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-06 22:22:15,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 84 events. 44/84 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 6 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 252. Up to 43 conditions per place. [2023-11-06 22:22:15,353 INFO L140 encePairwiseOnDemand]: 184/189 looper letters, 25 selfloop transitions, 7 changer transitions 2/34 dead transitions. [2023-11-06 22:22:15,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 191 flow [2023-11-06 22:22:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:22:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:22:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2023-11-06 22:22:15,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-06 22:22:15,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2023-11-06 22:22:15,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2023-11-06 22:22:15,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:15,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2023-11-06 22:22:15,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,362 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 74 flow. Second operand 5 states and 405 transitions. [2023-11-06 22:22:15,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 191 flow [2023-11-06 22:22:15,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:15,365 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 109 flow [2023-11-06 22:22:15,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-11-06 22:22:15,366 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-06 22:22:15,366 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 109 flow [2023-11-06 22:22:15,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:15,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:15,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:22:15,368 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 22:22:15,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash 601581245, now seen corresponding path program 1 times [2023-11-06 22:22:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:15,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983049856] [2023-11-06 22:22:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:15,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983049856] [2023-11-06 22:22:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983049856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:15,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:15,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:22:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494789239] [2023-11-06 22:22:15,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:15,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:15,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-11-06 22:22:15,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:15,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-11-06 22:22:15,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:15,625 INFO L124 PetriNetUnfolderBase]: 40/80 cut-off events. [2023-11-06 22:22:15,626 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-06 22:22:15,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 80 events. 40/80 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 193 event pairs, 2 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 292. Up to 43 conditions per place. [2023-11-06 22:22:15,627 INFO L140 encePairwiseOnDemand]: 184/189 looper letters, 22 selfloop transitions, 4 changer transitions 8/34 dead transitions. [2023-11-06 22:22:15,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 217 flow [2023-11-06 22:22:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:22:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:22:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2023-11-06 22:22:15,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253968253968254 [2023-11-06 22:22:15,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2023-11-06 22:22:15,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2023-11-06 22:22:15,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:15,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2023-11-06 22:22:15,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,636 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,636 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 109 flow. Second operand 5 states and 402 transitions. [2023-11-06 22:22:15,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 217 flow [2023-11-06 22:22:15,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 212 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:15,640 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 100 flow [2023-11-06 22:22:15,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-11-06 22:22:15,642 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-06 22:22:15,642 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 100 flow [2023-11-06 22:22:15,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:15,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:15,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:22:15,643 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 22:22:15,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2056542533, now seen corresponding path program 2 times [2023-11-06 22:22:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911650342] [2023-11-06 22:22:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:15,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911650342] [2023-11-06 22:22:15,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911650342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:15,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:15,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:22:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366150369] [2023-11-06 22:22:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:15,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:15,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:15,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 189 [2023-11-06 22:22:15,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:15,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 189 [2023-11-06 22:22:15,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:15,903 INFO L124 PetriNetUnfolderBase]: 40/73 cut-off events. [2023-11-06 22:22:15,904 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-06 22:22:15,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 73 events. 40/73 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 4 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 281. Up to 61 conditions per place. [2023-11-06 22:22:15,905 INFO L140 encePairwiseOnDemand]: 184/189 looper letters, 21 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-06 22:22:15,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 189 flow [2023-11-06 22:22:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:22:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:22:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2023-11-06 22:22:15,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2023-11-06 22:22:15,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2023-11-06 22:22:15,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2023-11-06 22:22:15,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:15,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2023-11-06 22:22:15,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,914 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 100 flow. Second operand 5 states and 396 transitions. [2023-11-06 22:22:15,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 189 flow [2023-11-06 22:22:15,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 27 transitions, 177 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:15,921 INFO L231 Difference]: Finished difference. Result has 36 places, 21 transitions, 131 flow [2023-11-06 22:22:15,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2023-11-06 22:22:15,923 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-06 22:22:15,923 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 131 flow [2023-11-06 22:22:15,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:15,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:22:15,926 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 22:22:15,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -248053777, now seen corresponding path program 1 times [2023-11-06 22:22:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573261996] [2023-11-06 22:22:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:16,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:16,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573261996] [2023-11-06 22:22:16,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573261996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:22:16,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687135124] [2023-11-06 22:22:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:16,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:22:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:22:16,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:22:16,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:22:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:21,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:22:21,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:38,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687135124] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:43,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:22:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-06 22:22:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67142484] [2023-11-06 22:22:43,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:22:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:22:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=147, Unknown=6, NotChecked=0, Total=210 [2023-11-06 22:22:45,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:22:47,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:22:48,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-11-06 22:22:48,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 131 flow. Second operand has 15 states, 15 states have (on average 74.0) internal successors, (1110), 15 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:48,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:48,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-11-06 22:22:48,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:50,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:22:52,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:22:54,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:22:56,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:22:58,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:07,959 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 50 DAG size of output: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:23:09,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:11,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:13,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:15,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:18,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:20,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:23,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:26,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:29,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:35,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:37,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:39,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:42,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:44,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:44,600 INFO L124 PetriNetUnfolderBase]: 132/254 cut-off events. [2023-11-06 22:23:44,600 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2023-11-06 22:23:44,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 254 events. 132/254 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 920 event pairs, 6 based on Foata normal form. 7/261 useless extension candidates. Maximal degree in co-relation 1014. Up to 85 conditions per place. [2023-11-06 22:23:44,604 INFO L140 encePairwiseOnDemand]: 181/189 looper letters, 54 selfloop transitions, 23 changer transitions 21/98 dead transitions. [2023-11-06 22:23:44,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 98 transitions, 681 flow [2023-11-06 22:23:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:23:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:23:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1101 transitions. [2023-11-06 22:23:44,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41609977324263037 [2023-11-06 22:23:44,610 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1101 transitions. [2023-11-06 22:23:44,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1101 transitions. [2023-11-06 22:23:44,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:44,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1101 transitions. [2023-11-06 22:23:44,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 78.64285714285714) internal successors, (1101), 14 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:44,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:44,622 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:44,622 INFO L175 Difference]: Start difference. First operand has 36 places, 21 transitions, 131 flow. Second operand 14 states and 1101 transitions. [2023-11-06 22:23:44,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 98 transitions, 681 flow [2023-11-06 22:23:44,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 98 transitions, 658 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:44,628 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 355 flow [2023-11-06 22:23:44,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=355, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-11-06 22:23:44,629 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2023-11-06 22:23:44,629 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 355 flow [2023-11-06 22:23:44,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 74.0) internal successors, (1110), 15 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:44,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:44,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:44,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:23:44,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:23:44,837 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 22:23:44,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash 676583727, now seen corresponding path program 2 times [2023-11-06 22:23:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:44,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264351035] [2023-11-06 22:23:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:44,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:45,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264351035] [2023-11-06 22:23:45,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264351035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465723752] [2023-11-06 22:23:45,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:23:45,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:45,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:45,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:45,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:23:45,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:23:45,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:45,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:23:45,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:49,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465723752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:52,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:23:52,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-11-06 22:23:52,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131579658] [2023-11-06 22:23:52,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:52,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:23:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:23:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=118, Unknown=1, NotChecked=0, Total=156 [2023-11-06 22:23:54,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:56,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:58,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:02,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:02,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-11-06 22:24:02,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 355 flow. Second operand has 13 states, 13 states have (on average 74.3076923076923) internal successors, (966), 13 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:02,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-11-06 22:24:02,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:08,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:23,286 WARN L293 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 62 DAG size of output: 51 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 22:24:26,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:27,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:28,901 INFO L124 PetriNetUnfolderBase]: 167/321 cut-off events. [2023-11-06 22:24:28,902 INFO L125 PetriNetUnfolderBase]: For 1703/1703 co-relation queries the response was YES. [2023-11-06 22:24:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 321 events. 167/321 cut-off events. For 1703/1703 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1267 event pairs, 22 based on Foata normal form. 2/323 useless extension candidates. Maximal degree in co-relation 1686. Up to 217 conditions per place. [2023-11-06 22:24:28,906 INFO L140 encePairwiseOnDemand]: 183/189 looper letters, 58 selfloop transitions, 19 changer transitions 5/82 dead transitions. [2023-11-06 22:24:28,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 786 flow [2023-11-06 22:24:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:24:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:24:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 781 transitions. [2023-11-06 22:24:28,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132275132275132 [2023-11-06 22:24:28,911 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 781 transitions. [2023-11-06 22:24:28,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 781 transitions. [2023-11-06 22:24:28,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:28,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 781 transitions. [2023-11-06 22:24:28,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:28,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:28,919 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:28,920 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 355 flow. Second operand 10 states and 781 transitions. [2023-11-06 22:24:28,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 786 flow [2023-11-06 22:24:28,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 685 flow, removed 49 selfloop flow, removed 3 redundant places. [2023-11-06 22:24:28,932 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 443 flow [2023-11-06 22:24:28,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=443, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-11-06 22:24:28,933 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-11-06 22:24:28,933 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 443 flow [2023-11-06 22:24:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 74.3076923076923) internal successors, (966), 13 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:28,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:28,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:28,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:24:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:29,141 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 22:24:29,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 318251485, now seen corresponding path program 3 times [2023-11-06 22:24:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629417986] [2023-11-06 22:24:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:29,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:29,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629417986] [2023-11-06 22:24:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629417986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385097613] [2023-11-06 22:24:29,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:24:29,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:29,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:29,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:25:09,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:25:09,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:09,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:25:09,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:17,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:20,960 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 22:25:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385097613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:20,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:20,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 14 [2023-11-06 22:25:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013846268] [2023-11-06 22:25:20,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:25:20,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:25:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=146, Unknown=1, NotChecked=0, Total=210 [2023-11-06 22:25:23,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:25,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:25,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 189 [2023-11-06 22:25:25,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 443 flow. Second operand has 15 states, 15 states have (on average 74.46666666666667) internal successors, (1117), 15 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:25:25,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:25,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 189 [2023-11-06 22:25:25,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:27,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:29,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:31,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:36,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:38,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:40,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:42,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:44,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:48,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:50,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:52,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:54,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:59,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:10,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:12,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:18,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:20,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:21,384 INFO L124 PetriNetUnfolderBase]: 469/836 cut-off events. [2023-11-06 22:26:21,384 INFO L125 PetriNetUnfolderBase]: For 5570/5570 co-relation queries the response was YES. [2023-11-06 22:26:21,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4401 conditions, 836 events. 469/836 cut-off events. For 5570/5570 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3933 event pairs, 6 based on Foata normal form. 35/871 useless extension candidates. Maximal degree in co-relation 4376. Up to 281 conditions per place. [2023-11-06 22:26:21,393 INFO L140 encePairwiseOnDemand]: 183/189 looper letters, 108 selfloop transitions, 76 changer transitions 45/229 dead transitions. [2023-11-06 22:26:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 229 transitions, 2199 flow [2023-11-06 22:26:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:26:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 22:26:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1808 transitions. [2023-11-06 22:26:21,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159190246146768 [2023-11-06 22:26:21,446 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1808 transitions. [2023-11-06 22:26:21,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1808 transitions. [2023-11-06 22:26:21,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:21,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1808 transitions. [2023-11-06 22:26:21,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 189.0) internal successors, (4536), 24 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,464 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 189.0) internal successors, (4536), 24 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,465 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 443 flow. Second operand 23 states and 1808 transitions. [2023-11-06 22:26:21,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 229 transitions, 2199 flow [2023-11-06 22:26:21,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 229 transitions, 2102 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:21,488 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 1105 flow [2023-11-06 22:26:21,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1105, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2023-11-06 22:26:21,489 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 66 predicate places. [2023-11-06 22:26:21,489 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 1105 flow [2023-11-06 22:26:21,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 74.46666666666667) internal successors, (1117), 15 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:26:21,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:21,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:21,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:26:21,700 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 22:26:21,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1125102607, now seen corresponding path program 4 times [2023-11-06 22:26:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194688372] [2023-11-06 22:26:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194688372] [2023-11-06 22:26:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194688372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646846238] [2023-11-06 22:26:21,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:26:21,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:21,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:21,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:21,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38119fe6-de00-418a-836c-8dab91c5c17d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process