./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:14:54,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:14:54,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:14:54,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:14:54,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:14:54,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:14:54,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:14:54,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:14:54,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:14:54,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:14:54,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:14:54,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:14:54,627 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:14:54,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:14:54,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:14:54,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:14:54,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:14:54,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:14:54,632 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:14:54,632 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:14:54,632 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:14:54,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:14:54,635 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:14:54,635 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:14:54,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:14:54,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:14:54,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:14:54,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:14:54,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:14:54,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:14:54,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:54,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:14:54,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:14:54,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:14:54,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:14:54,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:14:54,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:14:54,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:14:54,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:14:54,642 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_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2023-11-21 22:14:54,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:14:55,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:14:55,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:14:55,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:14:55,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:14:55,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-21 22:14:58,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:14:58,674 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:14:58,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-21 22:14:58,712 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/data/4742f5d2f/8b52f33144b948c782067735b7683a87/FLAGf5d987cb5 [2023-11-21 22:14:58,735 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/data/4742f5d2f/8b52f33144b948c782067735b7683a87 [2023-11-21 22:14:58,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:14:58,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:14:58,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:58,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:14:58,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:14:58,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:58" (1/1) ... [2023-11-21 22:14:58,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7551167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:58, skipping insertion in model container [2023-11-21 22:14:58,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:58" (1/1) ... [2023-11-21 22:14:58,851 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:14:59,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:59,415 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:14:59,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:59,565 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,565 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:14:59,571 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:14:59,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59 WrapperNode [2023-11-21 22:14:59,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:59,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:59,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:14:59,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:14:59,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,661 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 169 [2023-11-21 22:14:59,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:59,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:14:59,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:14:59,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:14:59,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:14:59,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:14:59,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:14:59,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:14:59,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (1/1) ... [2023-11-21 22:14:59,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:59,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:59,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:14:59,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1267c75-8199-4655-b188-1397da0de3cf/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:14:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:14:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:14:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:14:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:14:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:14:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:14:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:14:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:14:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:14:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:14:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:14:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:14:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:14:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:14:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:14:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:14:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:14:59,838 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:15:00,054 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:15:00,056 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:15:00,587 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:15:00,885 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:15:00,886 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:15:00,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:00 BoogieIcfgContainer [2023-11-21 22:15:00,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:15:00,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:15:00,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:15:00,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:15:00,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:14:58" (1/3) ... [2023-11-21 22:15:00,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9f2e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:15:00, skipping insertion in model container [2023-11-21 22:15:00,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:59" (2/3) ... [2023-11-21 22:15:00,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9f2e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:15:00, skipping insertion in model container [2023-11-21 22:15:00,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:15:00" (3/3) ... [2023-11-21 22:15:00,897 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2023-11-21 22:15:00,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:15:00,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-21 22:15:00,916 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:15:00,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:15:01,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 66 transitions, 148 flow [2023-11-21 22:15:01,128 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-21 22:15:01,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:15:01,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-21 22:15:01,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 66 transitions, 148 flow [2023-11-21 22:15:01,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 62 transitions, 136 flow [2023-11-21 22:15:01,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:15:01,169 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;@3bf1ea62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:15:01,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-21 22:15:01,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:15:01,174 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:15:01,174 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:15:01,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:01,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:15:01,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:01,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash 14495, now seen corresponding path program 1 times [2023-11-21 22:15:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558531541] [2023-11-21 22:15:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:01,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:01,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:01,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558531541] [2023-11-21 22:15:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558531541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:01,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:01,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:15:01,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271295945] [2023-11-21 22:15:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:01,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:01,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-21 22:15:01,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:01,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:01,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-21 22:15:01,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:02,592 INFO L124 PetriNetUnfolderBase]: 1419/2599 cut-off events. [2023-11-21 22:15:02,593 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 22:15:02,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 2599 events. 1419/2599 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20352 event pairs, 1059 based on Foata normal form. 144/2582 useless extension candidates. Maximal degree in co-relation 4661. Up to 1529 conditions per place. [2023-11-21 22:15:02,633 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-21 22:15:02,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 214 flow [2023-11-21 22:15:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-21 22:15:02,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2023-11-21 22:15:02,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-21 22:15:02,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-21 22:15:02,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:02,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-21 22:15:02,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:02,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:02,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:02,674 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 136 flow. Second operand 3 states and 148 transitions. [2023-11-21 22:15:02,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 214 flow [2023-11-21 22:15:02,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:15:02,688 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-21 22:15:02,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-21 22:15:02,695 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-21 22:15:02,696 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-21 22:15:02,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:02,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:02,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:15:02,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:15:02,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:02,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:02,698 INFO L85 PathProgramCache]: Analyzing trace with hash 14496, now seen corresponding path program 1 times [2023-11-21 22:15:02,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:02,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104567277] [2023-11-21 22:15:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:02,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:02,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:02,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104567277] [2023-11-21 22:15:02,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104567277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:02,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:02,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:15:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179323803] [2023-11-21 22:15:02,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:02,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:02,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 66 [2023-11-21 22:15:02,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:02,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:02,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 66 [2023-11-21 22:15:02,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:03,501 INFO L124 PetriNetUnfolderBase]: 1419/2598 cut-off events. [2023-11-21 22:15:03,501 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-21 22:15:03,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4744 conditions, 2598 events. 1419/2598 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20327 event pairs, 1059 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 4733. Up to 1528 conditions per place. [2023-11-21 22:15:03,533 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 31 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-21 22:15:03,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 210 flow [2023-11-21 22:15:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-21 22:15:03,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2023-11-21 22:15:03,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-21 22:15:03,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-21 22:15:03,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:03,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-21 22:15:03,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:03,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:03,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:03,546 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 148 transitions. [2023-11-21 22:15:03,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 210 flow [2023-11-21 22:15:03,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:03,555 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-21 22:15:03,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-21 22:15:03,556 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-11-21 22:15:03,557 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-21 22:15:03,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:03,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:03,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:15:03,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:15:03,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:03,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:03,562 INFO L85 PathProgramCache]: Analyzing trace with hash 432263479, now seen corresponding path program 1 times [2023-11-21 22:15:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366834812] [2023-11-21 22:15:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:03,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:03,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366834812] [2023-11-21 22:15:03,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366834812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:03,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:03,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493684460] [2023-11-21 22:15:03,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:03,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:03,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 66 [2023-11-21 22:15:03,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:03,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:03,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 66 [2023-11-21 22:15:03,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:04,270 INFO L124 PetriNetUnfolderBase]: 1419/2594 cut-off events. [2023-11-21 22:15:04,270 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-21 22:15:04,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 2594 events. 1419/2594 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20342 event pairs, 1058 based on Foata normal form. 2/2439 useless extension candidates. Maximal degree in co-relation 4729. Up to 1525 conditions per place. [2023-11-21 22:15:04,302 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 31 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-21 22:15:04,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 208 flow [2023-11-21 22:15:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-21 22:15:04,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2023-11-21 22:15:04,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-21 22:15:04,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-21 22:15:04,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:04,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-21 22:15:04,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,310 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 148 transitions. [2023-11-21 22:15:04,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 208 flow [2023-11-21 22:15:04,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:04,318 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-21 22:15:04,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-21 22:15:04,320 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-11-21 22:15:04,321 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-21 22:15:04,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:04,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:15:04,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:15:04,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:04,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash 432263478, now seen corresponding path program 1 times [2023-11-21 22:15:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:04,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241690661] [2023-11-21 22:15:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241690661] [2023-11-21 22:15:04,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241690661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:04,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:04,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:04,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688666209] [2023-11-21 22:15:04,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:04,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:04,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:04,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:04,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-21 22:15:04,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:04,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-21 22:15:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:04,909 INFO L124 PetriNetUnfolderBase]: 1420/2595 cut-off events. [2023-11-21 22:15:04,909 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-21 22:15:04,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2595 events. 1420/2595 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20192 event pairs, 898 based on Foata normal form. 0/2438 useless extension candidates. Maximal degree in co-relation 4735. Up to 1528 conditions per place. [2023-11-21 22:15:04,939 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-21 22:15:04,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 208 flow [2023-11-21 22:15:04,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:15:04,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-21 22:15:04,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:15:04,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:15:04,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:04,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:15:04,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,944 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:15:04,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 208 flow [2023-11-21 22:15:04,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:04,949 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-21 22:15:04,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-21 22:15:04,950 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-21 22:15:04,950 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-21 22:15:04,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:04,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:04,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:04,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:15:04,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:04,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1249766393, now seen corresponding path program 1 times [2023-11-21 22:15:04,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:04,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157622717] [2023-11-21 22:15:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:05,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157622717] [2023-11-21 22:15:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157622717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:05,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:05,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049674894] [2023-11-21 22:15:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:05,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:05,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-21 22:15:05,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:05,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:05,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-21 22:15:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:05,483 INFO L124 PetriNetUnfolderBase]: 1423/2594 cut-off events. [2023-11-21 22:15:05,483 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-21 22:15:05,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 2594 events. 1423/2594 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20037 event pairs, 743 based on Foata normal form. 0/2445 useless extension candidates. Maximal degree in co-relation 4739. Up to 1524 conditions per place. [2023-11-21 22:15:05,512 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-21 22:15:05,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 206 flow [2023-11-21 22:15:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:15:05,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-21 22:15:05,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:15:05,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:15:05,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:05,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:15:05,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:05,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:05,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:05,519 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:15:05,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 206 flow [2023-11-21 22:15:05,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:05,527 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-21 22:15:05,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-21 22:15:05,530 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-11-21 22:15:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-21 22:15:05,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:05,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:05,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:15:05,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:05,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1249766394, now seen corresponding path program 1 times [2023-11-21 22:15:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:05,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616422073] [2023-11-21 22:15:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:05,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616422073] [2023-11-21 22:15:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616422073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:05,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401857275] [2023-11-21 22:15:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:05,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 66 [2023-11-21 22:15:05,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:05,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:05,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 66 [2023-11-21 22:15:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:06,124 INFO L124 PetriNetUnfolderBase]: 1419/2583 cut-off events. [2023-11-21 22:15:06,124 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-21 22:15:06,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 2583 events. 1419/2583 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20532 event pairs, 1056 based on Foata normal form. 4/2443 useless extension candidates. Maximal degree in co-relation 4722. Up to 1516 conditions per place. [2023-11-21 22:15:06,153 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 31 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-21 22:15:06,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 202 flow [2023-11-21 22:15:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-21 22:15:06,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2023-11-21 22:15:06,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-21 22:15:06,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-21 22:15:06,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:06,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-21 22:15:06,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,158 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 148 transitions. [2023-11-21 22:15:06,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 202 flow [2023-11-21 22:15:06,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:06,163 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-21 22:15:06,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-21 22:15:06,164 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-21 22:15:06,165 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-21 22:15:06,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:06,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:06,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:15:06,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:06,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1280430362, now seen corresponding path program 1 times [2023-11-21 22:15:06,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:06,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528445623] [2023-11-21 22:15:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:06,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528445623] [2023-11-21 22:15:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528445623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277655503] [2023-11-21 22:15:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:06,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-21 22:15:06,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:06,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-21 22:15:06,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:06,711 INFO L124 PetriNetUnfolderBase]: 1439/2560 cut-off events. [2023-11-21 22:15:06,711 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-21 22:15:06,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4741 conditions, 2560 events. 1439/2560 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18923 event pairs, 937 based on Foata normal form. 0/2439 useless extension candidates. Maximal degree in co-relation 4731. Up to 1516 conditions per place. [2023-11-21 22:15:06,740 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-21 22:15:06,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 202 flow [2023-11-21 22:15:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:15:06,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-21 22:15:06,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:15:06,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:15:06,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:06,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:15:06,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,745 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:15:06,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 202 flow [2023-11-21 22:15:06,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:06,749 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-21 22:15:06,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-21 22:15:06,750 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-21 22:15:06,750 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-21 22:15:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:06,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:06,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:15:06,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:06,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1280430361, now seen corresponding path program 1 times [2023-11-21 22:15:06,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475893982] [2023-11-21 22:15:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:06,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:06,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475893982] [2023-11-21 22:15:06,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475893982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:06,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:15:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954339421] [2023-11-21 22:15:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:06,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 66 [2023-11-21 22:15:06,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:06,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:06,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 66 [2023-11-21 22:15:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:07,270 INFO L124 PetriNetUnfolderBase]: 1419/2534 cut-off events. [2023-11-21 22:15:07,270 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-21 22:15:07,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 2534 events. 1419/2534 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 18529 event pairs, 923 based on Foata normal form. 12/2421 useless extension candidates. Maximal degree in co-relation 4681. Up to 1484 conditions per place. [2023-11-21 22:15:07,293 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 31 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-21 22:15:07,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 198 flow [2023-11-21 22:15:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-21 22:15:07,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2023-11-21 22:15:07,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-21 22:15:07,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-21 22:15:07,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:07,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-21 22:15:07,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,297 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 148 transitions. [2023-11-21 22:15:07,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 198 flow [2023-11-21 22:15:07,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:07,301 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-21 22:15:07,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-21 22:15:07,302 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-21 22:15:07,302 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-21 22:15:07,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:07,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:07,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:15:07,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:07,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1695908224, now seen corresponding path program 1 times [2023-11-21 22:15:07,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:07,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143240768] [2023-11-21 22:15:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:07,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143240768] [2023-11-21 22:15:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143240768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:07,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:15:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370351871] [2023-11-21 22:15:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:07,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:15:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:15:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:15:07,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 66 [2023-11-21 22:15:07,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:07,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 66 [2023-11-21 22:15:07,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:07,772 INFO L124 PetriNetUnfolderBase]: 1175/2018 cut-off events. [2023-11-21 22:15:07,772 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-21 22:15:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3823 conditions, 2018 events. 1175/2018 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14358 event pairs, 199 based on Foata normal form. 0/2001 useless extension candidates. Maximal degree in co-relation 3813. Up to 1361 conditions per place. [2023-11-21 22:15:07,786 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 30 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2023-11-21 22:15:07,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 204 flow [2023-11-21 22:15:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:15:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:15:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-21 22:15:07,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2023-11-21 22:15:07,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-21 22:15:07,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-21 22:15:07,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:07,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-21 22:15:07,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,791 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 152 transitions. [2023-11-21 22:15:07,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 204 flow [2023-11-21 22:15:07,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:07,793 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 110 flow [2023-11-21 22:15:07,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-11-21 22:15:07,794 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-11-21 22:15:07,794 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 110 flow [2023-11-21 22:15:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:07,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:07,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:07,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:15:07,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:07,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:07,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1911410248, now seen corresponding path program 1 times [2023-11-21 22:15:07,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:07,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807456689] [2023-11-21 22:15:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:08,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807456689] [2023-11-21 22:15:08,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807456689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:08,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:08,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:15:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486562603] [2023-11-21 22:15:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:08,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:15:08,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:08,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:15:08,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:15:09,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-21 22:15:09,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 9 states, 9 states have (on average 38.77777777777778) internal successors, (349), 9 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:09,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:09,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-21 22:15:09,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:09,628 INFO L124 PetriNetUnfolderBase]: 1031/1802 cut-off events. [2023-11-21 22:15:09,628 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-21 22:15:09,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 1802 events. 1031/1802 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 12549 event pairs, 240 based on Foata normal form. 60/1855 useless extension candidates. Maximal degree in co-relation 3409. Up to 756 conditions per place. [2023-11-21 22:15:09,641 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 33 selfloop transitions, 5 changer transitions 10/73 dead transitions. [2023-11-21 22:15:09,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 256 flow [2023-11-21 22:15:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:15:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:15:09,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 345 transitions. [2023-11-21 22:15:09,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6534090909090909 [2023-11-21 22:15:09,644 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 345 transitions. [2023-11-21 22:15:09,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 345 transitions. [2023-11-21 22:15:09,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:09,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 345 transitions. [2023-11-21 22:15:09,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.125) internal successors, (345), 8 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:09,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:09,648 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:09,649 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 8 states and 345 transitions. [2023-11-21 22:15:09,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 256 flow [2023-11-21 22:15:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:09,651 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 112 flow [2023-11-21 22:15:09,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-11-21 22:15:09,652 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-21 22:15:09,653 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 112 flow [2023-11-21 22:15:09,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 38.77777777777778) internal successors, (349), 9 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:09,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:09,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:09,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:15:09,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:09,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1911408684, now seen corresponding path program 1 times [2023-11-21 22:15:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563991572] [2023-11-21 22:15:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:09,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563991572] [2023-11-21 22:15:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563991572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:09,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:09,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:15:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307224875] [2023-11-21 22:15:09,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:09,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:15:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:15:09,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:15:09,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-21 22:15:09,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:09,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:09,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-21 22:15:09,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:13,186 INFO L124 PetriNetUnfolderBase]: 15819/24153 cut-off events. [2023-11-21 22:15:13,187 INFO L125 PetriNetUnfolderBase]: For 909/909 co-relation queries the response was YES. [2023-11-21 22:15:13,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46940 conditions, 24153 events. 15819/24153 cut-off events. For 909/909 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 188506 event pairs, 3790 based on Foata normal form. 0/23439 useless extension candidates. Maximal degree in co-relation 46929. Up to 8109 conditions per place. [2023-11-21 22:15:13,331 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 41 selfloop transitions, 8 changer transitions 85/153 dead transitions. [2023-11-21 22:15:13,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 153 transitions, 614 flow [2023-11-21 22:15:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:15:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:15:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 424 transitions. [2023-11-21 22:15:13,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7138047138047138 [2023-11-21 22:15:13,335 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 424 transitions. [2023-11-21 22:15:13,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 424 transitions. [2023-11-21 22:15:13,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:13,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 424 transitions. [2023-11-21 22:15:13,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.111111111111114) internal successors, (424), 9 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:13,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:13,339 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:13,340 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 112 flow. Second operand 9 states and 424 transitions. [2023-11-21 22:15:13,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 153 transitions, 614 flow [2023-11-21 22:15:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 153 transitions, 594 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:15:13,344 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 214 flow [2023-11-21 22:15:13,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-11-21 22:15:13,345 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-11-21 22:15:13,345 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 214 flow [2023-11-21 22:15:13,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:13,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:13,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:13,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:15:13,346 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:13,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2125276013, now seen corresponding path program 1 times [2023-11-21 22:15:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239302569] [2023-11-21 22:15:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:13,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239302569] [2023-11-21 22:15:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239302569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:15:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067271874] [2023-11-21 22:15:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:15:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:15:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:15:13,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-21 22:15:13,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:13,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:13,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-21 22:15:13,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:16,652 INFO L124 PetriNetUnfolderBase]: 11755/19305 cut-off events. [2023-11-21 22:15:16,652 INFO L125 PetriNetUnfolderBase]: For 28991/28997 co-relation queries the response was YES. [2023-11-21 22:15:16,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59039 conditions, 19305 events. 11755/19305 cut-off events. For 28991/28997 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 159125 event pairs, 1066 based on Foata normal form. 482/19670 useless extension candidates. Maximal degree in co-relation 59020. Up to 7211 conditions per place. [2023-11-21 22:15:16,808 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 58 selfloop transitions, 12 changer transitions 86/175 dead transitions. [2023-11-21 22:15:16,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 175 transitions, 1176 flow [2023-11-21 22:15:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:15:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:15:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 463 transitions. [2023-11-21 22:15:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7015151515151515 [2023-11-21 22:15:16,811 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 463 transitions. [2023-11-21 22:15:16,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 463 transitions. [2023-11-21 22:15:16,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:16,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 463 transitions. [2023-11-21 22:15:16,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.3) internal successors, (463), 10 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:16,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:16,816 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:16,816 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 214 flow. Second operand 10 states and 463 transitions. [2023-11-21 22:15:16,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 175 transitions, 1176 flow [2023-11-21 22:15:16,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 175 transitions, 1022 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-11-21 22:15:16,937 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 323 flow [2023-11-21 22:15:16,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=323, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2023-11-21 22:15:16,940 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-11-21 22:15:16,940 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 323 flow [2023-11-21 22:15:16,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:16,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:16,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:16,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:15:16,941 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:16,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash -923446317, now seen corresponding path program 1 times [2023-11-21 22:15:16,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:16,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963032110] [2023-11-21 22:15:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963032110] [2023-11-21 22:15:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963032110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:17,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:17,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:15:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573307784] [2023-11-21 22:15:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:15:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:15:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:15:17,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-21 22:15:17,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:17,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:17,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-21 22:15:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:19,872 INFO L124 PetriNetUnfolderBase]: 10237/16631 cut-off events. [2023-11-21 22:15:19,873 INFO L125 PetriNetUnfolderBase]: For 47577/47595 co-relation queries the response was YES. [2023-11-21 22:15:19,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56004 conditions, 16631 events. 10237/16631 cut-off events. For 47577/47595 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 131361 event pairs, 1849 based on Foata normal form. 402/16931 useless extension candidates. Maximal degree in co-relation 55978. Up to 5301 conditions per place. [2023-11-21 22:15:20,025 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 58 selfloop transitions, 15 changer transitions 72/164 dead transitions. [2023-11-21 22:15:20,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 164 transitions, 1249 flow [2023-11-21 22:15:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:15:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:15:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 439 transitions. [2023-11-21 22:15:20,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6651515151515152 [2023-11-21 22:15:20,028 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 439 transitions. [2023-11-21 22:15:20,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 439 transitions. [2023-11-21 22:15:20,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:20,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 439 transitions. [2023-11-21 22:15:20,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.9) internal successors, (439), 10 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:20,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:20,035 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:20,035 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 323 flow. Second operand 10 states and 439 transitions. [2023-11-21 22:15:20,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 164 transitions, 1249 flow [2023-11-21 22:15:20,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 164 transitions, 1221 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-21 22:15:20,361 INFO L231 Difference]: Finished difference. Result has 92 places, 70 transitions, 499 flow [2023-11-21 22:15:20,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=92, PETRI_TRANSITIONS=70} [2023-11-21 22:15:20,362 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2023-11-21 22:15:20,363 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 70 transitions, 499 flow [2023-11-21 22:15:20,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:20,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:20,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:20,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:15:20,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:20,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 890889703, now seen corresponding path program 1 times [2023-11-21 22:15:20,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:20,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579204330] [2023-11-21 22:15:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579204330] [2023-11-21 22:15:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579204330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:20,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:20,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:15:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619404586] [2023-11-21 22:15:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:20,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:15:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:15:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:15:20,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:15:20,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 70 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:20,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:20,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:15:20,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:23,086 INFO L124 PetriNetUnfolderBase]: 7481/13073 cut-off events. [2023-11-21 22:15:23,087 INFO L125 PetriNetUnfolderBase]: For 51823/52505 co-relation queries the response was YES. [2023-11-21 22:15:23,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46428 conditions, 13073 events. 7481/13073 cut-off events. For 51823/52505 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 108442 event pairs, 2892 based on Foata normal form. 784/13552 useless extension candidates. Maximal degree in co-relation 46391. Up to 8119 conditions per place. [2023-11-21 22:15:23,281 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 51 selfloop transitions, 7 changer transitions 37/129 dead transitions. [2023-11-21 22:15:23,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 1069 flow [2023-11-21 22:15:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:15:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:15:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2023-11-21 22:15:23,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2023-11-21 22:15:23,284 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 319 transitions. [2023-11-21 22:15:23,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 319 transitions. [2023-11-21 22:15:23,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:23,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 319 transitions. [2023-11-21 22:15:23,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.57142857142857) internal successors, (319), 7 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:23,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:23,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:23,289 INFO L175 Difference]: Start difference. First operand has 92 places, 70 transitions, 499 flow. Second operand 7 states and 319 transitions. [2023-11-21 22:15:23,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 1069 flow [2023-11-21 22:15:23,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 129 transitions, 1003 flow, removed 30 selfloop flow, removed 7 redundant places. [2023-11-21 22:15:23,777 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 570 flow [2023-11-21 22:15:23,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=570, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-11-21 22:15:23,778 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2023-11-21 22:15:23,778 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 570 flow [2023-11-21 22:15:23,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:23,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:23,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:15:23,779 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:23,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1826255580, now seen corresponding path program 1 times [2023-11-21 22:15:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:23,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149862406] [2023-11-21 22:15:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:24,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:24,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149862406] [2023-11-21 22:15:24,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149862406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:24,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:24,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:15:24,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345894649] [2023-11-21 22:15:24,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:24,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:15:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:24,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:15:24,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:15:24,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:15:24,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:24,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:24,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:15:24,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:26,979 INFO L124 PetriNetUnfolderBase]: 9156/15948 cut-off events. [2023-11-21 22:15:26,980 INFO L125 PetriNetUnfolderBase]: For 59313/60081 co-relation queries the response was YES. [2023-11-21 22:15:27,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55288 conditions, 15948 events. 9156/15948 cut-off events. For 59313/60081 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 140075 event pairs, 3494 based on Foata normal form. 386/15689 useless extension candidates. Maximal degree in co-relation 55251. Up to 5947 conditions per place. [2023-11-21 22:15:27,136 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 47 selfloop transitions, 8 changer transitions 38/131 dead transitions. [2023-11-21 22:15:27,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1074 flow [2023-11-21 22:15:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:15:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:15:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 318 transitions. [2023-11-21 22:15:27,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6883116883116883 [2023-11-21 22:15:27,139 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 318 transitions. [2023-11-21 22:15:27,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 318 transitions. [2023-11-21 22:15:27,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:27,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 318 transitions. [2023-11-21 22:15:27,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:27,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:27,143 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:27,144 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 570 flow. Second operand 7 states and 318 transitions. [2023-11-21 22:15:27,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1074 flow [2023-11-21 22:15:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 1021 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-11-21 22:15:27,401 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 557 flow [2023-11-21 22:15:27,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=557, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2023-11-21 22:15:27,402 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2023-11-21 22:15:27,402 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 557 flow [2023-11-21 22:15:27,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:27,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:27,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:15:27,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:27,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash 873184660, now seen corresponding path program 1 times [2023-11-21 22:15:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:27,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366610652] [2023-11-21 22:15:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366610652] [2023-11-21 22:15:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366610652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:15:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888983238] [2023-11-21 22:15:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:15:27,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:15:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:15:27,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-21 22:15:27,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 557 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:27,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:27,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-21 22:15:27,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:33,565 INFO L124 PetriNetUnfolderBase]: 26833/40541 cut-off events. [2023-11-21 22:15:33,565 INFO L125 PetriNetUnfolderBase]: For 92059/95596 co-relation queries the response was YES. [2023-11-21 22:15:34,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116121 conditions, 40541 events. 26833/40541 cut-off events. For 92059/95596 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 317263 event pairs, 4918 based on Foata normal form. 2097/41586 useless extension candidates. Maximal degree in co-relation 116085. Up to 22384 conditions per place. [2023-11-21 22:15:34,215 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 60 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-11-21 22:15:34,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 871 flow [2023-11-21 22:15:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:15:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:15:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2023-11-21 22:15:34,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-21 22:15:34,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 192 transitions. [2023-11-21 22:15:34,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 192 transitions. [2023-11-21 22:15:34,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:34,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 192 transitions. [2023-11-21 22:15:34,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:34,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:34,220 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:34,220 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 557 flow. Second operand 4 states and 192 transitions. [2023-11-21 22:15:34,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 871 flow [2023-11-21 22:15:34,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 843 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-21 22:15:34,567 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 575 flow [2023-11-21 22:15:34,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=575, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-11-21 22:15:34,567 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2023-11-21 22:15:34,568 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 575 flow [2023-11-21 22:15:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:34,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:34,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:15:34,569 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:34,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2108212528, now seen corresponding path program 1 times [2023-11-21 22:15:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826425670] [2023-11-21 22:15:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:34,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826425670] [2023-11-21 22:15:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826425670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:34,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:34,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:15:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477726029] [2023-11-21 22:15:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:15:34,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:15:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:15:34,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:15:34,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:34,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:34,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:15:34,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:15:41,372 INFO L124 PetriNetUnfolderBase]: 24586/41349 cut-off events. [2023-11-21 22:15:41,372 INFO L125 PetriNetUnfolderBase]: For 99944/102398 co-relation queries the response was YES. [2023-11-21 22:15:41,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127503 conditions, 41349 events. 24586/41349 cut-off events. For 99944/102398 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 386784 event pairs, 11853 based on Foata normal form. 1432/38111 useless extension candidates. Maximal degree in co-relation 127469. Up to 15731 conditions per place. [2023-11-21 22:15:41,718 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 74 selfloop transitions, 19 changer transitions 4/135 dead transitions. [2023-11-21 22:15:41,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1061 flow [2023-11-21 22:15:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:15:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:15:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2023-11-21 22:15:41,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926406926406926 [2023-11-21 22:15:41,720 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 320 transitions. [2023-11-21 22:15:41,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 320 transitions. [2023-11-21 22:15:41,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:15:41,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 320 transitions. [2023-11-21 22:15:41,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,725 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 575 flow. Second operand 7 states and 320 transitions. [2023-11-21 22:15:41,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1061 flow [2023-11-21 22:15:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 1043 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-21 22:15:41,921 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 691 flow [2023-11-21 22:15:41,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=691, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-21 22:15:41,922 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 21 predicate places. [2023-11-21 22:15:41,922 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 691 flow [2023-11-21 22:15:41,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:41,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:15:41,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:15:41,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:15:41,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:15:41,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:15:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash -202585724, now seen corresponding path program 1 times [2023-11-21 22:15:41,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:15:41,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628235619] [2023-11-21 22:15:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:15:41,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:15:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:15:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:15:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:15:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628235619] [2023-11-21 22:15:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628235619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:15:42,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:15:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:15:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162000128] [2023-11-21 22:15:42,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:15:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:15:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:15:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:15:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:15:42,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-21 22:15:42,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:15:42,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:15:42,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-21 22:15:42,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand