./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/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_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/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_4e0f3dd3-1a11-456f-94de-885dd01cffa8/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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:58,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:58,575 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:58:58,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:58,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:58,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:58,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:58,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:58,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:58,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:58,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:58,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:58,633 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:58,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:58,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:58,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:58,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:58,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:58,637 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:58:58,638 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:58:58,638 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:58:58,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:58,640 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:58:58,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:58:58,640 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:58,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:58,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:58,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:58,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:58,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:58,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:58,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:58,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:58,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:58,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:58,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:58,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:58,647 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:58,647 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_4e0f3dd3-1a11-456f-94de-885dd01cffa8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2023-11-06 21:58:58,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:58,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:58,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:58,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:58,994 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:58,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2023-11-06 21:59:02,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:59:02,323 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:59:02,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2023-11-06 21:59:02,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/data/dbe03938e/c5ff03dffb1f4ffa8a408e95d80246d5/FLAG8d51bcc23 [2023-11-06 21:59:02,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/data/dbe03938e/c5ff03dffb1f4ffa8a408e95d80246d5 [2023-11-06 21:59:02,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:59:02,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:59:02,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:02,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:59:02,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:59:02,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d27864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02, skipping insertion in model container [2023-11-06 21:59:02,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:59:02,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:02,668 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:59:02,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:02,720 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:59:02,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02 WrapperNode [2023-11-06 21:59:02,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:02,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:02,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:59:02,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:59:02,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,769 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 203 [2023-11-06 21:59:02,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:02,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:59:02,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:59:02,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:59:02,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:59:02,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:59:02,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:59:02,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:59:02,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (1/1) ... [2023-11-06 21:59:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:02,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:02,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:59:02,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:59:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:59:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:59:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:59:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:59:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:59:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:59:02,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:59:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:59:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:59:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:59:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:59:02,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:59:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:59:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:59:02,922 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 21:59:03,095 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:59:03,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:59:03,535 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:59:03,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:59:03,551 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:59:03,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:03 BoogieIcfgContainer [2023-11-06 21:59:03,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:59:03,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:59:03,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:59:03,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:59:03,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:02" (1/3) ... [2023-11-06 21:59:03,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f596f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:03, skipping insertion in model container [2023-11-06 21:59:03,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:02" (2/3) ... [2023-11-06 21:59:03,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f596f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:03, skipping insertion in model container [2023-11-06 21:59:03,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:03" (3/3) ... [2023-11-06 21:59:03,573 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2023-11-06 21:59:03,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:59:03,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 21:59:03,598 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:59:03,802 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:59:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 272 transitions, 565 flow [2023-11-06 21:59:04,022 INFO L124 PetriNetUnfolderBase]: 19/269 cut-off events. [2023-11-06 21:59:04,022 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:59:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 19/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 630 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2023-11-06 21:59:04,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 272 transitions, 565 flow [2023-11-06 21:59:04,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 264 transitions, 546 flow [2023-11-06 21:59:04,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:59:04,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 264 transitions, 546 flow [2023-11-06 21:59:04,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 264 transitions, 546 flow [2023-11-06 21:59:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 264 transitions, 546 flow [2023-11-06 21:59:04,144 INFO L124 PetriNetUnfolderBase]: 19/264 cut-off events. [2023-11-06 21:59:04,144 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:59:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 19/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 632 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2023-11-06 21:59:04,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 20400 [2023-11-06 21:59:15,746 INFO L134 LiptonReduction]: Checked pairs total: 19335 [2023-11-06 21:59:15,747 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-11-06 21:59:15,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:59:15,768 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;@5feddb34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:59:15,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 21:59:15,770 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:59:15,770 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:59:15,770 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:15,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:15,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:59:15,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:15,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1142, now seen corresponding path program 1 times [2023-11-06 21:59:15,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965319655] [2023-11-06 21:59:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:15,906 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 21:59:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965319655] [2023-11-06 21:59:15,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965319655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:15,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:15,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:59:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983415175] [2023-11-06 21:59:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:15,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:59:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:59:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:59:15,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 611 [2023-11-06 21:59:15,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 258.5) internal successors, (517), 2 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:15,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:15,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 611 [2023-11-06 21:59:15,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:16,154 INFO L124 PetriNetUnfolderBase]: 81/164 cut-off events. [2023-11-06 21:59:16,154 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:59:16,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 457 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-11-06 21:59:16,158 INFO L140 encePairwiseOnDemand]: 608/611 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-06 21:59:16,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-11-06 21:59:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:59:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:59:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 545 transitions. [2023-11-06 21:59:16,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459901800327332 [2023-11-06 21:59:16,187 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 545 transitions. [2023-11-06 21:59:16,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 545 transitions. [2023-11-06 21:59:16,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:16,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 545 transitions. [2023-11-06 21:59:16,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,212 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,215 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 545 transitions. [2023-11-06 21:59:16,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-11-06 21:59:16,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:59:16,223 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-11-06 21:59:16,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-06 21:59:16,231 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-06 21:59:16,231 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-11-06 21:59:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 258.5) internal successors, (517), 2 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:16,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:59:16,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:16,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:16,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1123383, now seen corresponding path program 1 times [2023-11-06 21:59:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:16,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251977921] [2023-11-06 21:59:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:16,603 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 21:59:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251977921] [2023-11-06 21:59:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251977921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:16,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:16,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824418317] [2023-11-06 21:59:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:16,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:16,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:16,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 611 [2023-11-06 21:59:16,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:16,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 611 [2023-11-06 21:59:16,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:16,756 INFO L124 PetriNetUnfolderBase]: 76/153 cut-off events. [2023-11-06 21:59:16,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:16,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 418 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-11-06 21:59:16,758 INFO L140 encePairwiseOnDemand]: 608/611 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 21:59:16,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-11-06 21:59:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-11-06 21:59:16,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266230223677032 [2023-11-06 21:59:16,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-11-06 21:59:16,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-11-06 21:59:16,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:16,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-11-06 21:59:16,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,773 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 782 transitions. [2023-11-06 21:59:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-11-06 21:59:16,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:59:16,775 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-11-06 21:59:16,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-06 21:59:16,776 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-06 21:59:16,777 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-11-06 21:59:16,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:16,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:59:16,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:59:16,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:16,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1123385, now seen corresponding path program 1 times [2023-11-06 21:59:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:16,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272981243] [2023-11-06 21:59:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:16,900 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 21:59:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272981243] [2023-11-06 21:59:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272981243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:16,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680980359] [2023-11-06 21:59:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:16,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 611 [2023-11-06 21:59:16,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:16,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:16,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 611 [2023-11-06 21:59:16,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:17,078 INFO L124 PetriNetUnfolderBase]: 71/142 cut-off events. [2023-11-06 21:59:17,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:17,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 382 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-11-06 21:59:17,080 INFO L140 encePairwiseOnDemand]: 608/611 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-06 21:59:17,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-11-06 21:59:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-11-06 21:59:17,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41734860883797054 [2023-11-06 21:59:17,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-11-06 21:59:17,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-11-06 21:59:17,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:17,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-11-06 21:59:17,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,097 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 765 transitions. [2023-11-06 21:59:17,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-11-06 21:59:17,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:17,099 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-11-06 21:59:17,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-06 21:59:17,100 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-11-06 21:59:17,100 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-11-06 21:59:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:17,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:59:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:59:17,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:17,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1079596926, now seen corresponding path program 1 times [2023-11-06 21:59:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312350206] [2023-11-06 21:59:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:17,185 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 21:59:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312350206] [2023-11-06 21:59:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312350206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:17,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667543182] [2023-11-06 21:59:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:17,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 611 [2023-11-06 21:59:17,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:17,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 611 [2023-11-06 21:59:17,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:17,312 INFO L124 PetriNetUnfolderBase]: 66/131 cut-off events. [2023-11-06 21:59:17,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:17,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 342 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-11-06 21:59:17,314 INFO L140 encePairwiseOnDemand]: 608/611 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-06 21:59:17,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-11-06 21:59:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-11-06 21:59:17,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41789416257501366 [2023-11-06 21:59:17,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-11-06 21:59:17,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-11-06 21:59:17,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:17,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-11-06 21:59:17,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,329 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 766 transitions. [2023-11-06 21:59:17,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-11-06 21:59:17,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:17,330 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-11-06 21:59:17,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-06 21:59:17,331 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-11-06 21:59:17,332 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-11-06 21:59:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:17,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:59:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:59:17,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:17,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1079596927, now seen corresponding path program 1 times [2023-11-06 21:59:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:17,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075871563] [2023-11-06 21:59:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:17,376 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 21:59:17,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075871563] [2023-11-06 21:59:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075871563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:17,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:17,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178312386] [2023-11-06 21:59:17,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:17,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:17,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 611 [2023-11-06 21:59:17,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:17,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 611 [2023-11-06 21:59:17,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:17,506 INFO L124 PetriNetUnfolderBase]: 61/120 cut-off events. [2023-11-06 21:59:17,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:17,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 299 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-11-06 21:59:17,507 INFO L140 encePairwiseOnDemand]: 608/611 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-11-06 21:59:17,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-11-06 21:59:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-06 21:59:17,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41516639388979815 [2023-11-06 21:59:17,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-06 21:59:17,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-06 21:59:17,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:17,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-06 21:59:17,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,530 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 761 transitions. [2023-11-06 21:59:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-11-06 21:59:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:17,532 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-11-06 21:59:17,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-06 21:59:17,535 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 21:59:17,535 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-11-06 21:59:17,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:17,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:17,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:59:17,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:17,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1889415736, now seen corresponding path program 1 times [2023-11-06 21:59:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8762463] [2023-11-06 21:59:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:17,670 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 21:59:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8762463] [2023-11-06 21:59:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8762463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:17,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:17,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565684809] [2023-11-06 21:59:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:17,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:17,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 611 [2023-11-06 21:59:17,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 240.4) internal successors, (1202), 5 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:17,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 611 [2023-11-06 21:59:17,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:17,887 INFO L124 PetriNetUnfolderBase]: 49/100 cut-off events. [2023-11-06 21:59:17,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 223 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-11-06 21:59:17,889 INFO L140 encePairwiseOnDemand]: 609/611 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 21:59:17,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-11-06 21:59:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2023-11-06 21:59:17,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40098199672667756 [2023-11-06 21:59:17,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2023-11-06 21:59:17,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2023-11-06 21:59:17,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:17,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2023-11-06 21:59:17,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,903 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 735 transitions. [2023-11-06 21:59:17,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-11-06 21:59:17,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:17,905 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-11-06 21:59:17,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-11-06 21:59:17,906 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 21:59:17,906 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-11-06 21:59:17,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.4) internal successors, (1202), 5 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:17,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:17,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:17,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:59:17,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:17,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1889415735, now seen corresponding path program 1 times [2023-11-06 21:59:17,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:17,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876159727] [2023-11-06 21:59:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:17,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:18,023 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 21:59:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876159727] [2023-11-06 21:59:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876159727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:18,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631143524] [2023-11-06 21:59:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:18,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 611 [2023-11-06 21:59:18,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:18,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:18,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 611 [2023-11-06 21:59:18,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:18,164 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2023-11-06 21:59:18,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:59:18,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-11-06 21:59:18,166 INFO L140 encePairwiseOnDemand]: 609/611 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-11-06 21:59:18,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-11-06 21:59:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-11-06 21:59:18,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2023-11-06 21:59:18,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-11-06 21:59:18,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-11-06 21:59:18,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:18,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-11-06 21:59:18,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:18,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:18,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:18,178 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 767 transitions. [2023-11-06 21:59:18,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-11-06 21:59:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:18,180 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-11-06 21:59:18,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-11-06 21:59:18,180 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-11-06 21:59:18,180 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-11-06 21:59:18,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:18,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:18,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:18,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:59:18,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:18,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:18,182 INFO L85 PathProgramCache]: Analyzing trace with hash -241031380, now seen corresponding path program 1 times [2023-11-06 21:59:18,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:18,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856435179] [2023-11-06 21:59:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:18,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,385 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 21:59:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856435179] [2023-11-06 21:59:19,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856435179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:19,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:19,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:19,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651958160] [2023-11-06 21:59:19,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:19,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:19,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:19,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:19,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 611 [2023-11-06 21:59:19,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:19,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:19,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 611 [2023-11-06 21:59:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:20,114 INFO L124 PetriNetUnfolderBase]: 40/106 cut-off events. [2023-11-06 21:59:20,114 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 21:59:20,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 340 event pairs, 1 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-11-06 21:59:20,116 INFO L140 encePairwiseOnDemand]: 606/611 looper letters, 30 selfloop transitions, 5 changer transitions 9/44 dead transitions. [2023-11-06 21:59:20,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 199 flow [2023-11-06 21:59:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1443 transitions. [2023-11-06 21:59:20,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39361702127659576 [2023-11-06 21:59:20,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1443 transitions. [2023-11-06 21:59:20,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1443 transitions. [2023-11-06 21:59:20,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:20,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1443 transitions. [2023-11-06 21:59:20,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:20,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:20,148 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:20,148 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1443 transitions. [2023-11-06 21:59:20,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 199 flow [2023-11-06 21:59:20,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:20,151 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 63 flow [2023-11-06 21:59:20,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-11-06 21:59:20,154 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-11-06 21:59:20,154 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 63 flow [2023-11-06 21:59:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:20,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:20,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:20,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:59:20,157 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:20,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 287340976, now seen corresponding path program 2 times [2023-11-06 21:59:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738026866] [2023-11-06 21:59:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:21,586 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 21:59:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738026866] [2023-11-06 21:59:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738026866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:21,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762465050] [2023-11-06 21:59:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:22,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 611 [2023-11-06 21:59:22,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 238.2) internal successors, (1191), 5 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:22,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 611 [2023-11-06 21:59:22,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:22,513 INFO L124 PetriNetUnfolderBase]: 36/114 cut-off events. [2023-11-06 21:59:22,513 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-06 21:59:22,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 114 events. 36/114 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 399 event pairs, 2 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 294. Up to 45 conditions per place. [2023-11-06 21:59:22,514 INFO L140 encePairwiseOnDemand]: 606/611 looper letters, 32 selfloop transitions, 6 changer transitions 9/47 dead transitions. [2023-11-06 21:59:22,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 241 flow [2023-11-06 21:59:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1456 transitions. [2023-11-06 21:59:22,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971631205673759 [2023-11-06 21:59:22,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1456 transitions. [2023-11-06 21:59:22,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1456 transitions. [2023-11-06 21:59:22,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:22,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1456 transitions. [2023-11-06 21:59:22,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,536 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,536 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 63 flow. Second operand 6 states and 1456 transitions. [2023-11-06 21:59:22,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 241 flow [2023-11-06 21:59:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:22,539 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 101 flow [2023-11-06 21:59:22,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2023-11-06 21:59:22,540 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-06 21:59:22,540 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 101 flow [2023-11-06 21:59:22,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.2) internal successors, (1191), 5 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:22,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:22,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:22,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:59:22,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:22,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:22,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1721103376, now seen corresponding path program 3 times [2023-11-06 21:59:22,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:22,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139581209] [2023-11-06 21:59:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,563 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 21:59:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139581209] [2023-11-06 21:59:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139581209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37333957] [2023-11-06 21:59:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:23,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:23,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 611 [2023-11-06 21:59:23,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 21 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 234.2) internal successors, (1171), 5 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:23,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:23,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 611 [2023-11-06 21:59:23,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:24,336 INFO L124 PetriNetUnfolderBase]: 32/98 cut-off events. [2023-11-06 21:59:24,338 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-06 21:59:24,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 98 events. 32/98 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 305 event pairs, 2 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 312. Up to 46 conditions per place. [2023-11-06 21:59:24,340 INFO L140 encePairwiseOnDemand]: 606/611 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-11-06 21:59:24,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 256 flow [2023-11-06 21:59:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:24,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1430 transitions. [2023-11-06 21:59:24,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900709219858156 [2023-11-06 21:59:24,347 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1430 transitions. [2023-11-06 21:59:24,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1430 transitions. [2023-11-06 21:59:24,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:24,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1430 transitions. [2023-11-06 21:59:24,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.33333333333334) internal successors, (1430), 6 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,363 INFO L175 Difference]: Start difference. First operand has 41 places, 21 transitions, 101 flow. Second operand 6 states and 1430 transitions. [2023-11-06 21:59:24,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 256 flow [2023-11-06 21:59:24,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 245 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:24,367 INFO L231 Difference]: Finished difference. Result has 45 places, 20 transitions, 108 flow [2023-11-06 21:59:24,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=20} [2023-11-06 21:59:24,368 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-11-06 21:59:24,368 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 20 transitions, 108 flow [2023-11-06 21:59:24,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 234.2) internal successors, (1171), 5 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:24,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:24,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:24,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:59:24,369 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:24,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1192713096, now seen corresponding path program 4 times [2023-11-06 21:59:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328977901] [2023-11-06 21:59:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:25,182 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 21:59:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328977901] [2023-11-06 21:59:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328977901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:25,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048478501] [2023-11-06 21:59:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:25,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 611 [2023-11-06 21:59:25,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 20 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 234.2) internal successors, (1171), 5 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:25,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:25,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 611 [2023-11-06 21:59:25,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:26,090 INFO L124 PetriNetUnfolderBase]: 16/54 cut-off events. [2023-11-06 21:59:26,090 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-06 21:59:26,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 54 events. 16/54 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 1 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 199. Up to 20 conditions per place. [2023-11-06 21:59:26,091 INFO L140 encePairwiseOnDemand]: 606/611 looper letters, 18 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2023-11-06 21:59:26,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 201 flow [2023-11-06 21:59:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1417 transitions. [2023-11-06 21:59:26,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38652482269503546 [2023-11-06 21:59:26,101 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1417 transitions. [2023-11-06 21:59:26,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1417 transitions. [2023-11-06 21:59:26,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:26,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1417 transitions. [2023-11-06 21:59:26,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.16666666666666) internal successors, (1417), 6 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,127 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,127 INFO L175 Difference]: Start difference. First operand has 45 places, 20 transitions, 108 flow. Second operand 6 states and 1417 transitions. [2023-11-06 21:59:26,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 201 flow [2023-11-06 21:59:26,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 180 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-06 21:59:26,131 INFO L231 Difference]: Finished difference. Result has 43 places, 18 transitions, 82 flow [2023-11-06 21:59:26,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=18} [2023-11-06 21:59:26,132 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-06 21:59:26,133 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 18 transitions, 82 flow [2023-11-06 21:59:26,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 234.2) internal successors, (1171), 5 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:26,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:26,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:59:26,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:26,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1333603888, now seen corresponding path program 5 times [2023-11-06 21:59:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390759234] [2023-11-06 21:59:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:26,972 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 21:59:26,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390759234] [2023-11-06 21:59:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390759234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:26,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893518620] [2023-11-06 21:59:26,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:26,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:27,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 611 [2023-11-06 21:59:27,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 237.2) internal successors, (1186), 5 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:27,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 611 [2023-11-06 21:59:27,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:27,660 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-11-06 21:59:27,661 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-06 21:59:27,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 40 events. 8/40 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 137. Up to 19 conditions per place. [2023-11-06 21:59:27,662 INFO L140 encePairwiseOnDemand]: 606/611 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-11-06 21:59:27,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 178 flow [2023-11-06 21:59:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:27,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1435 transitions. [2023-11-06 21:59:27,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39143480632842337 [2023-11-06 21:59:27,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1435 transitions. [2023-11-06 21:59:27,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1435 transitions. [2023-11-06 21:59:27,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:27,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1435 transitions. [2023-11-06 21:59:27,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,683 INFO L175 Difference]: Start difference. First operand has 43 places, 18 transitions, 82 flow. Second operand 6 states and 1435 transitions. [2023-11-06 21:59:27,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 178 flow [2023-11-06 21:59:27,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-06 21:59:27,686 INFO L231 Difference]: Finished difference. Result has 40 places, 16 transitions, 63 flow [2023-11-06 21:59:27,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2023-11-06 21:59:27,687 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-11-06 21:59:27,688 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 63 flow [2023-11-06 21:59:27,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 237.2) internal successors, (1186), 5 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:27,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:27,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:27,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:59:27,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 21:59:27,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:27,690 INFO L85 PathProgramCache]: Analyzing trace with hash -588901390, now seen corresponding path program 6 times [2023-11-06 21:59:27,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289887426] [2023-11-06 21:59:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:28,364 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 21:59:28,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:28,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289887426] [2023-11-06 21:59:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289887426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:28,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:28,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:28,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980469590] [2023-11-06 21:59:28,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:28,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:28,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:59:28,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 611 [2023-11-06 21:59:28,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 235.2) internal successors, (1176), 5 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:28,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:28,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 611 [2023-11-06 21:59:28,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:29,042 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-06 21:59:29,043 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:59:29,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 70. Up to 8 conditions per place. [2023-11-06 21:59:29,043 INFO L140 encePairwiseOnDemand]: 606/611 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-11-06 21:59:29,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 18 transitions, 101 flow [2023-11-06 21:59:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1411 transitions. [2023-11-06 21:59:29,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38488816148390614 [2023-11-06 21:59:29,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1411 transitions. [2023-11-06 21:59:29,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1411 transitions. [2023-11-06 21:59:29,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:29,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1411 transitions. [2023-11-06 21:59:29,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,066 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 611.0) internal successors, (4277), 7 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,066 INFO L175 Difference]: Start difference. First operand has 40 places, 16 transitions, 63 flow. Second operand 6 states and 1411 transitions. [2023-11-06 21:59:29,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 18 transitions, 101 flow [2023-11-06 21:59:29,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 18 transitions, 88 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 21:59:29,068 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-06 21:59:29,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-06 21:59:29,069 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-11-06 21:59:29,069 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-06 21:59:29,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 235.2) internal successors, (1176), 5 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:29,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-06 21:59:29,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-06 21:59:29,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-06 21:59:29,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-06 21:59:29,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-06 21:59:29,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-06 21:59:29,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-06 21:59:29,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-06 21:59:29,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-06 21:59:29,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-06 21:59:29,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-06 21:59:29,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-06 21:59:29,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-06 21:59:29,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-06 21:59:29,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-06 21:59:29,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-06 21:59:29,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-06 21:59:29,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:59:29,077 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:29,080 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:59:29,081 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:59:29,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:59:29 BasicIcfg [2023-11-06 21:59:29,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:59:29,086 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:59:29,086 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:59:29,086 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:59:29,087 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:03" (3/4) ... [2023-11-06 21:59:29,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:59:29,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 21:59:29,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 21:59:29,094 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 21:59:29,100 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 21:59:29,100 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:59:29,100 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:59:29,101 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:59:29,159 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:59:29,159 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:59:29,159 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:59:29,160 INFO L158 Benchmark]: Toolchain (without parser) took 26786.80ms. Allocated memory was 159.4MB in the beginning and 343.9MB in the end (delta: 184.5MB). Free memory was 112.5MB in the beginning and 135.9MB in the end (delta: -23.4MB). Peak memory consumption was 162.7MB. Max. memory is 16.1GB. [2023-11-06 21:59:29,161 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 159.4MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:59:29,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.70ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 100.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:59:29,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.32ms. Allocated memory is still 159.4MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:59:29,162 INFO L158 Benchmark]: Boogie Preprocessor took 36.17ms. Allocated memory is still 159.4MB. Free memory was 98.4MB in the beginning and 96.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:59:29,163 INFO L158 Benchmark]: RCFGBuilder took 751.87ms. Allocated memory is still 159.4MB. Free memory was 96.8MB in the beginning and 74.8MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-06 21:59:29,163 INFO L158 Benchmark]: TraceAbstraction took 25521.83ms. Allocated memory was 159.4MB in the beginning and 343.9MB in the end (delta: 184.5MB). Free memory was 74.3MB in the beginning and 140.1MB in the end (delta: -65.9MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. [2023-11-06 21:59:29,164 INFO L158 Benchmark]: Witness Printer took 73.86ms. Allocated memory is still 343.9MB. Free memory was 139.1MB in the beginning and 135.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:59:29,166 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 159.4MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.70ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 100.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.32ms. Allocated memory is still 159.4MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.17ms. Allocated memory is still 159.4MB. Free memory was 98.4MB in the beginning and 96.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 751.87ms. Allocated memory is still 159.4MB. Free memory was 96.8MB in the beginning and 74.8MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 25521.83ms. Allocated memory was 159.4MB in the beginning and 343.9MB in the end (delta: 184.5MB). Free memory was 74.3MB in the beginning and 140.1MB in the end (delta: -65.9MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. * Witness Printer took 73.86ms. Allocated memory is still 343.9MB. Free memory was 139.1MB in the beginning and 135.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.7s, 255 PlacesBefore, 39 PlacesAfterwards, 264 TransitionsBefore, 29 TransitionsAfterwards, 20400 CoEnabledTransitionPairs, 8 FixpointIterations, 91 TrivialSequentialCompositions, 156 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 70 ConcurrentYvCompositions, 19 ChoiceCompositions, 339 TotalNumberOfCompositions, 19335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19335, independent: 19335, independent conditional: 0, independent unconditional: 19335, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12439, independent: 12439, independent conditional: 0, independent unconditional: 12439, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19335, independent: 6896, independent conditional: 0, independent unconditional: 6896, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 12439, unknown conditional: 0, unknown unconditional: 12439] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 392 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1996 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1162 mSDsluCounter, 963 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 533 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2380 IncrementalHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 430 mSDtfsCounter, 2380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:59:29,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0f3dd3-1a11-456f-94de-885dd01cffa8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE