./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:42,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:42,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:57:42,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:42,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:42,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:42,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:42,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:42,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:42,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:42,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:42,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:42,203 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:42,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:42,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:42,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:42,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:42,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:42,207 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:57:42,208 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:57:42,208 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:57:42,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:42,209 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:57:42,210 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:57:42,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:42,211 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:42,212 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:42,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:42,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:42,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:42,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:42,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:42,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:42,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:42,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:42,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:42,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:42,217 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:42,217 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_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2023-11-06 22:57:42,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:42,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:42,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:42,552 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:42,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:42,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2023-11-06 22:57:45,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:45,988 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:45,989 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2023-11-06 22:57:46,008 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/data/e7cefda2b/43355c33582f4e709cc877ce7f70dadd/FLAG4cd87e31a [2023-11-06 22:57:46,029 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/data/e7cefda2b/43355c33582f4e709cc877ce7f70dadd [2023-11-06 22:57:46,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:46,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:46,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:46,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:46,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:46,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c28910d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46, skipping insertion in model container [2023-11-06 22:57:46,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:46,371 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:57:46,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:46,594 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:46,621 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:57:46,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:46,701 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:46,701 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:46,702 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:46,710 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:46,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46 WrapperNode [2023-11-06 22:57:46,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:46,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:46,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:46,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:46,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,772 INFO L138 Inliner]: procedures = 171, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2023-11-06 22:57:46,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:46,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:46,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:46,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:46,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:46,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:46,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:46,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:46,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (1/1) ... [2023-11-06 22:57:46,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:46,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:46,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87529437-d47b-478d-85eb-9fb924c96fd9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:57:46,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:57:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:57:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:57:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:57:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:57:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:57:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:46,902 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:57:47,048 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:47,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:47,246 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:47,276 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:47,276 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:57:47,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:47 BoogieIcfgContainer [2023-11-06 22:57:47,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:47,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:47,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:47,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:47,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:46" (1/3) ... [2023-11-06 22:57:47,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:47, skipping insertion in model container [2023-11-06 22:57:47,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:46" (2/3) ... [2023-11-06 22:57:47,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:47, skipping insertion in model container [2023-11-06 22:57:47,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:47" (3/3) ... [2023-11-06 22:57:47,288 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-11-06 22:57:47,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:47,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:57:47,309 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:57:47,364 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:57:47,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 96 flow [2023-11-06 22:57:47,464 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-06 22:57:47,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:47,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2023-11-06 22:57:47,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 46 transitions, 96 flow [2023-11-06 22:57:47,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 96 flow [2023-11-06 22:57:47,481 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:47,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 96 flow [2023-11-06 22:57:47,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 96 flow [2023-11-06 22:57:47,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 96 flow [2023-11-06 22:57:47,540 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-06 22:57:47,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:47,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2023-11-06 22:57:47,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 418 [2023-11-06 22:57:49,154 INFO L134 LiptonReduction]: Checked pairs total: 397 [2023-11-06 22:57:49,154 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-11-06 22:57:49,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:49,186 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;@6a925270, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:49,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 22:57:49,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:49,189 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:57:49,189 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:49,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:49,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:49,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-06 22:57:49,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 6900, now seen corresponding path program 1 times [2023-11-06 22:57:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:49,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056612669] [2023-11-06 22:57:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:49,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056612669] [2023-11-06 22:57:49,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056612669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:49,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:49,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:49,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45512236] [2023-11-06 22:57:49,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:49,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-06 22:57:49,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:49,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-06 22:57:49,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:49,605 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-11-06 22:57:49,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:49,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 16 events. 3/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 3 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 20. Up to 14 conditions per place. [2023-11-06 22:57:49,606 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 5 selfloop transitions, 1 changer transitions 0/7 dead transitions. [2023-11-06 22:57:49,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 30 flow [2023-11-06 22:57:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-06 22:57:49,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2023-11-06 22:57:49,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-06 22:57:49,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-06 22:57:49,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:49,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-06 22:57:49,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-06 22:57:49,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,638 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 26 flow. Second operand 3 states and 118 transitions. [2023-11-06 22:57:49,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 30 flow [2023-11-06 22:57:49,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:49,643 INFO L231 Difference]: Finished difference. Result has 12 places, 7 transitions, 20 flow [2023-11-06 22:57:49,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=12, PETRI_TRANSITIONS=7} [2023-11-06 22:57:49,649 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2023-11-06 22:57:49,649 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 7 transitions, 20 flow [2023-11-06 22:57:49,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:49,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:49,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:57:49,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-06 22:57:49,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash 6899, now seen corresponding path program 1 times [2023-11-06 22:57:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361316226] [2023-11-06 22:57:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:49,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361316226] [2023-11-06 22:57:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361316226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:49,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:49,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381917799] [2023-11-06 22:57:49,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:49,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:49,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 92 [2023-11-06 22:57:49,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 7 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:49,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 92 [2023-11-06 22:57:49,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:49,754 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-11-06 22:57:49,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:49,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 22. Up to 10 conditions per place. [2023-11-06 22:57:49,755 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 4 selfloop transitions, 1 changer transitions 0/6 dead transitions. [2023-11-06 22:57:49,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 28 flow [2023-11-06 22:57:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-06 22:57:49,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2023-11-06 22:57:49,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-06 22:57:49,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-06 22:57:49,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:49,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-06 22:57:49,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,762 INFO L175 Difference]: Start difference. First operand has 12 places, 7 transitions, 20 flow. Second operand 3 states and 108 transitions. [2023-11-06 22:57:49,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 28 flow [2023-11-06 22:57:49,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:49,763 INFO L231 Difference]: Finished difference. Result has 12 places, 6 transitions, 19 flow [2023-11-06 22:57:49,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=12, PETRI_TRANSITIONS=6} [2023-11-06 22:57:49,764 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2023-11-06 22:57:49,765 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 6 transitions, 19 flow [2023-11-06 22:57:49,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:49,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:49,765 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:57:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:57:49,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-06 22:57:49,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2082611911, now seen corresponding path program 1 times [2023-11-06 22:57:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048898614] [2023-11-06 22:57:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:49,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:57:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:49,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:57:49,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:57:49,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-06 22:57:49,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-11-06 22:57:49,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-06 22:57:49,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-11-06 22:57:49,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-11-06 22:57:49,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-06 22:57:49,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:57:49,825 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 22:57:49,828 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:57:49,828 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:57:49,846 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:57:49,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 126 flow [2023-11-06 22:57:49,868 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-11-06 22:57:49,868 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:57:49,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 92 events. 3/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 63. Up to 6 conditions per place. [2023-11-06 22:57:49,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 126 flow [2023-11-06 22:57:49,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 126 flow [2023-11-06 22:57:49,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:49,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 126 flow [2023-11-06 22:57:49,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 126 flow [2023-11-06 22:57:49,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 126 flow [2023-11-06 22:57:49,889 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-11-06 22:57:49,889 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:57:49,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 92 events. 3/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 63. Up to 6 conditions per place. [2023-11-06 22:57:49,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 1100 [2023-11-06 22:57:51,441 INFO L134 LiptonReduction]: Checked pairs total: 1559 [2023-11-06 22:57:51,441 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-11-06 22:57:51,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:51,445 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;@6a925270, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:51,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:57:51,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:51,447 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:57:51,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:51,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:51,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:51,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:51,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 10709, now seen corresponding path program 1 times [2023-11-06 22:57:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39599759] [2023-11-06 22:57:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39599759] [2023-11-06 22:57:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39599759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:51,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669840078] [2023-11-06 22:57:51,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:51,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:51,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 106 [2023-11-06 22:57:51,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:51,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 106 [2023-11-06 22:57:51,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:51,563 INFO L124 PetriNetUnfolderBase]: 66/143 cut-off events. [2023-11-06 22:57:51,563 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 22:57:51,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 143 events. 66/143 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 626 event pairs, 66 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 84. Up to 129 conditions per place. [2023-11-06 22:57:51,566 INFO L140 encePairwiseOnDemand]: 102/106 looper letters, 10 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-11-06 22:57:51,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 60 flow [2023-11-06 22:57:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-06 22:57:51,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449685534591195 [2023-11-06 22:57:51,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-06 22:57:51,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-06 22:57:51,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:51,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-06 22:57:51,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:51,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:51,573 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 44 flow. Second operand 3 states and 143 transitions. [2023-11-06 22:57:51,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 60 flow [2023-11-06 22:57:51,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:51,574 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 40 flow [2023-11-06 22:57:51,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-11-06 22:57:51,575 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-11-06 22:57:51,576 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 40 flow [2023-11-06 22:57:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:51,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:51,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:57:51,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:51,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash 10708, now seen corresponding path program 1 times [2023-11-06 22:57:51,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790130449] [2023-11-06 22:57:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:51,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790130449] [2023-11-06 22:57:51,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790130449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:51,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:51,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804079890] [2023-11-06 22:57:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:51,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:51,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 106 [2023-11-06 22:57:51,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:51,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 106 [2023-11-06 22:57:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:51,757 INFO L124 PetriNetUnfolderBase]: 39/95 cut-off events. [2023-11-06 22:57:51,758 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 22:57:51,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 95 events. 39/95 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 351 event pairs, 39 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 188. Up to 81 conditions per place. [2023-11-06 22:57:51,759 INFO L140 encePairwiseOnDemand]: 104/106 looper letters, 9 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-11-06 22:57:51,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 13 transitions, 58 flow [2023-11-06 22:57:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-06 22:57:51,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-11-06 22:57:51,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-06 22:57:51,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-06 22:57:51,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:51,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-06 22:57:51,783 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) [2023-11-06 22:57:51,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:51,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:51,786 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 40 flow. Second operand 3 states and 146 transitions. [2023-11-06 22:57:51,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 13 transitions, 58 flow [2023-11-06 22:57:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:51,787 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 39 flow [2023-11-06 22:57:51,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-11-06 22:57:51,788 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-11-06 22:57:51,788 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 39 flow [2023-11-06 22:57:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:51,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:57:51,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:57:51,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:51,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash 319317208, now seen corresponding path program 1 times [2023-11-06 22:57:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743843755] [2023-11-06 22:57:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:51,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743843755] [2023-11-06 22:57:51,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743843755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:51,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:51,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816549360] [2023-11-06 22:57:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:51,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-11-06 22:57:51,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:51,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-11-06 22:57:51,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:51,938 INFO L124 PetriNetUnfolderBase]: 42/97 cut-off events. [2023-11-06 22:57:51,938 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:57:51,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 97 events. 42/97 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 409 event pairs, 16 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 198. Up to 47 conditions per place. [2023-11-06 22:57:51,940 INFO L140 encePairwiseOnDemand]: 102/106 looper letters, 13 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2023-11-06 22:57:51,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 88 flow [2023-11-06 22:57:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-06 22:57:51,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46855345911949686 [2023-11-06 22:57:51,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-06 22:57:51,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-06 22:57:51,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:51,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-06 22:57:51,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:51,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:51,945 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 39 flow. Second operand 3 states and 149 transitions. [2023-11-06 22:57:51,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 88 flow [2023-11-06 22:57:51,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:51,947 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 60 flow [2023-11-06 22:57:51,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-11-06 22:57:51,948 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-11-06 22:57:51,948 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 60 flow [2023-11-06 22:57:51,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:51,949 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:57:51,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:51,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1639498810, now seen corresponding path program 1 times [2023-11-06 22:57:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283422531] [2023-11-06 22:57:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:57:51,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:51,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283422531] [2023-11-06 22:57:51,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283422531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:51,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:51,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:51,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969751473] [2023-11-06 22:57:51,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:51,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:51,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:52,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-11-06 22:57:52,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:52,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-11-06 22:57:52,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:52,049 INFO L124 PetriNetUnfolderBase]: 33/92 cut-off events. [2023-11-06 22:57:52,049 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-06 22:57:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 92 events. 33/92 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 391 event pairs, 18 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 232. Up to 41 conditions per place. [2023-11-06 22:57:52,051 INFO L140 encePairwiseOnDemand]: 102/106 looper letters, 12 selfloop transitions, 4 changer transitions 0/19 dead transitions. [2023-11-06 22:57:52,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 106 flow [2023-11-06 22:57:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-06 22:57:52,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2023-11-06 22:57:52,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-06 22:57:52,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-06 22:57:52,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:52,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-06 22:57:52,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:52,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:52,067 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 60 flow. Second operand 3 states and 147 transitions. [2023-11-06 22:57:52,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 106 flow [2023-11-06 22:57:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:52,074 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 82 flow [2023-11-06 22:57:52,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-11-06 22:57:52,078 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2023-11-06 22:57:52,078 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 82 flow [2023-11-06 22:57:52,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:52,081 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:57:52,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:52,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash -713876570, now seen corresponding path program 1 times [2023-11-06 22:57:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617902567] [2023-11-06 22:57:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617902567] [2023-11-06 22:57:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617902567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:52,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051423939] [2023-11-06 22:57:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:52,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-11-06 22:57:52,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:52,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-11-06 22:57:52,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:52,206 INFO L124 PetriNetUnfolderBase]: 29/78 cut-off events. [2023-11-06 22:57:52,206 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:57:52,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 78 events. 29/78 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 300 event pairs, 6 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 234. Up to 61 conditions per place. [2023-11-06 22:57:52,207 INFO L140 encePairwiseOnDemand]: 104/106 looper letters, 14 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-11-06 22:57:52,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 123 flow [2023-11-06 22:57:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-06 22:57:52,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-11-06 22:57:52,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-06 22:57:52,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-06 22:57:52,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:52,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-06 22:57:52,214 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) [2023-11-06 22:57:52,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:52,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:52,215 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 82 flow. Second operand 3 states and 146 transitions. [2023-11-06 22:57:52,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 123 flow [2023-11-06 22:57:52,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:52,218 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 74 flow [2023-11-06 22:57:52,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-11-06 22:57:52,219 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-11-06 22:57:52,219 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 74 flow [2023-11-06 22:57:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:52,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:57:52,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:52,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash -715142311, now seen corresponding path program 1 times [2023-11-06 22:57:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279251302] [2023-11-06 22:57:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:57:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279251302] [2023-11-06 22:57:52,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279251302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:52,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:52,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:52,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99910384] [2023-11-06 22:57:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:52,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-11-06 22:57:52,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:52,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-11-06 22:57:52,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:52,348 INFO L124 PetriNetUnfolderBase]: 25/76 cut-off events. [2023-11-06 22:57:52,348 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-06 22:57:52,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 76 events. 25/76 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 304 event pairs, 8 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 212. Up to 45 conditions per place. [2023-11-06 22:57:52,353 INFO L140 encePairwiseOnDemand]: 104/106 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-11-06 22:57:52,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 104 flow [2023-11-06 22:57:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-06 22:57:52,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2023-11-06 22:57:52,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-06 22:57:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-06 22:57:52,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:52,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-06 22:57:52,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:52,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 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) [2023-11-06 22:57:52,358 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 74 flow. Second operand 3 states and 144 transitions. [2023-11-06 22:57:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 104 flow [2023-11-06 22:57:52,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:52,361 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 72 flow [2023-11-06 22:57:52,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-11-06 22:57:52,364 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-11-06 22:57:52,364 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 72 flow [2023-11-06 22:57:52,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:52,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:57:52,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:57:52,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:57:52,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash -696856568, now seen corresponding path program 1 times [2023-11-06 22:57:52,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879707880] [2023-11-06 22:57:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:52,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:57:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:52,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:57:52,427 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:57:52,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-06 22:57:52,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-11-06 22:57:52,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-11-06 22:57:52,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-11-06 22:57:52,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-11-06 22:57:52,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2023-11-06 22:57:52,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-11-06 22:57:52,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:57:52,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,437 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:57:52,437 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:57:52,463 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:57:52,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 70 transitions, 158 flow [2023-11-06 22:57:52,499 INFO L124 PetriNetUnfolderBase]: 4/122 cut-off events. [2023-11-06 22:57:52,499 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:57:52,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 4/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2023-11-06 22:57:52,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 70 transitions, 158 flow [2023-11-06 22:57:52,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 158 flow [2023-11-06 22:57:52,513 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:52,514 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 70 transitions, 158 flow [2023-11-06 22:57:52,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 70 transitions, 158 flow [2023-11-06 22:57:52,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 70 transitions, 158 flow [2023-11-06 22:57:52,532 INFO L124 PetriNetUnfolderBase]: 4/122 cut-off events. [2023-11-06 22:57:52,532 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:57:52,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 4/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2023-11-06 22:57:52,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 2046 [2023-11-06 22:57:54,245 INFO L134 LiptonReduction]: Checked pairs total: 2986 [2023-11-06 22:57:54,245 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-11-06 22:57:54,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:54,248 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;@6a925270, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:54,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 22:57:54,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:54,249 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:57:54,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:54,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:54,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:54,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 15128, now seen corresponding path program 1 times [2023-11-06 22:57:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922974130] [2023-11-06 22:57:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:54,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922974130] [2023-11-06 22:57:54,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922974130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078379047] [2023-11-06 22:57:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:57:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:57:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:57:54,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 126 [2023-11-06 22:57:54,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 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) [2023-11-06 22:57:54,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 126 [2023-11-06 22:57:54,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:54,391 INFO L124 PetriNetUnfolderBase]: 621/1019 cut-off events. [2023-11-06 22:57:54,391 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-06 22:57:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 1019 events. 621/1019 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5476 event pairs, 621 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 387. Up to 962 conditions per place. [2023-11-06 22:57:54,401 INFO L140 encePairwiseOnDemand]: 124/126 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-06 22:57:54,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 88 flow [2023-11-06 22:57:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:57:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:57:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 136 transitions. [2023-11-06 22:57:54,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-06 22:57:54,403 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 136 transitions. [2023-11-06 22:57:54,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 136 transitions. [2023-11-06 22:57:54,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:54,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 136 transitions. [2023-11-06 22:57:54,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,405 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,405 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 2 states and 136 transitions. [2023-11-06 22:57:54,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 88 flow [2023-11-06 22:57:54,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 86 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:54,407 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 54 flow [2023-11-06 22:57:54,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-06 22:57:54,407 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-11-06 22:57:54,408 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 54 flow [2023-11-06 22:57:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 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) [2023-11-06 22:57:54,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:54,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:57:54,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:54,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash 15126, now seen corresponding path program 1 times [2023-11-06 22:57:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908534927] [2023-11-06 22:57:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908534927] [2023-11-06 22:57:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908534927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879036915] [2023-11-06 22:57:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:54,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:54,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:54,584 INFO L124 PetriNetUnfolderBase]: 450/763 cut-off events. [2023-11-06 22:57:54,585 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-06 22:57:54,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 763 events. 450/763 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3934 event pairs, 450 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1530. Up to 705 conditions per place. [2023-11-06 22:57:54,592 INFO L140 encePairwiseOnDemand]: 124/126 looper letters, 14 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-11-06 22:57:54,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 82 flow [2023-11-06 22:57:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2023-11-06 22:57:54,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2023-11-06 22:57:54,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2023-11-06 22:57:54,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2023-11-06 22:57:54,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:54,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2023-11-06 22:57:54,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,596 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 54 flow. Second operand 3 states and 172 transitions. [2023-11-06 22:57:54,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 82 flow [2023-11-06 22:57:54,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:54,598 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 54 flow [2023-11-06 22:57:54,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-06 22:57:54,599 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-11-06 22:57:54,599 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 54 flow [2023-11-06 22:57:54,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:54,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:57:54,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:54,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 15125, now seen corresponding path program 1 times [2023-11-06 22:57:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351936356] [2023-11-06 22:57:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:54,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351936356] [2023-11-06 22:57:54,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351936356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054927736] [2023-11-06 22:57:54,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 126 [2023-11-06 22:57:54,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 126 [2023-11-06 22:57:54,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:54,740 INFO L124 PetriNetUnfolderBase]: 279/507 cut-off events. [2023-11-06 22:57:54,740 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-06 22:57:54,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 507 events. 279/507 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2426 event pairs, 279 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 1019. Up to 449 conditions per place. [2023-11-06 22:57:54,745 INFO L140 encePairwiseOnDemand]: 124/126 looper letters, 13 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:57:54,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 80 flow [2023-11-06 22:57:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-06 22:57:54,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-11-06 22:57:54,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-06 22:57:54,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-06 22:57:54,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:54,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-06 22:57:54,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 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) [2023-11-06 22:57:54,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,750 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 54 flow. Second operand 3 states and 174 transitions. [2023-11-06 22:57:54,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 80 flow [2023-11-06 22:57:54,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:54,751 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 53 flow [2023-11-06 22:57:54,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-11-06 22:57:54,752 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-11-06 22:57:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 53 flow [2023-11-06 22:57:54,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:57:54,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:57:54,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:54,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 450943016, now seen corresponding path program 1 times [2023-11-06 22:57:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383575042] [2023-11-06 22:57:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:54,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383575042] [2023-11-06 22:57:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383575042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075264438] [2023-11-06 22:57:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:54,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:54,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:54,904 INFO L124 PetriNetUnfolderBase]: 370/649 cut-off events. [2023-11-06 22:57:54,904 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-06 22:57:54,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 649 events. 370/649 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3554 event pairs, 180 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1331. Up to 363 conditions per place. [2023-11-06 22:57:54,910 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 20 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-06 22:57:54,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 131 flow [2023-11-06 22:57:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2023-11-06 22:57:54,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2023-11-06 22:57:54,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2023-11-06 22:57:54,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2023-11-06 22:57:54,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:54,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2023-11-06 22:57:54,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,915 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 53 flow. Second operand 3 states and 181 transitions. [2023-11-06 22:57:54,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 131 flow [2023-11-06 22:57:54,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:54,917 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 82 flow [2023-11-06 22:57:54,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-11-06 22:57:54,917 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-11-06 22:57:54,918 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 82 flow [2023-11-06 22:57:54,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,918 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:54,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:57:54,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:54,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash -161823909, now seen corresponding path program 1 times [2023-11-06 22:57:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518014645] [2023-11-06 22:57:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:57:54,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518014645] [2023-11-06 22:57:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518014645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290995980] [2023-11-06 22:57:54,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:54,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:54,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:54,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:55,116 INFO L124 PetriNetUnfolderBase]: 432/765 cut-off events. [2023-11-06 22:57:55,116 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2023-11-06 22:57:55,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 765 events. 432/765 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4386 event pairs, 182 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 1982. Up to 429 conditions per place. [2023-11-06 22:57:55,124 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 22 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-06 22:57:55,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 183 flow [2023-11-06 22:57:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-11-06 22:57:55,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-11-06 22:57:55,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-11-06 22:57:55,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-11-06 22:57:55,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:55,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-11-06 22:57:55,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,129 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 82 flow. Second operand 3 states and 180 transitions. [2023-11-06 22:57:55,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 183 flow [2023-11-06 22:57:55,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:55,132 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 122 flow [2023-11-06 22:57:55,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-06 22:57:55,133 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2023-11-06 22:57:55,133 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 122 flow [2023-11-06 22:57:55,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:55,133 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:57:55,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:55,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,134 INFO L85 PathProgramCache]: Analyzing trace with hash -720073486, now seen corresponding path program 1 times [2023-11-06 22:57:55,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861859850] [2023-11-06 22:57:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861859850] [2023-11-06 22:57:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861859850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:55,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074559520] [2023-11-06 22:57:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:55,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:55,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:55,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:55,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:55,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:55,312 INFO L124 PetriNetUnfolderBase]: 352/619 cut-off events. [2023-11-06 22:57:55,312 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-06 22:57:55,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 619 events. 352/619 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3539 event pairs, 64 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1878. Up to 512 conditions per place. [2023-11-06 22:57:55,319 INFO L140 encePairwiseOnDemand]: 124/126 looper letters, 28 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-06 22:57:55,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 228 flow [2023-11-06 22:57:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2023-11-06 22:57:55,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354497354497355 [2023-11-06 22:57:55,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2023-11-06 22:57:55,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2023-11-06 22:57:55,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:55,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2023-11-06 22:57:55,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,324 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 122 flow. Second operand 3 states and 179 transitions. [2023-11-06 22:57:55,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 228 flow [2023-11-06 22:57:55,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:55,327 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 110 flow [2023-11-06 22:57:55,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-06 22:57:55,328 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-11-06 22:57:55,328 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 110 flow [2023-11-06 22:57:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:55,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:57:55,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:55,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -721571705, now seen corresponding path program 1 times [2023-11-06 22:57:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61844315] [2023-11-06 22:57:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:57:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61844315] [2023-11-06 22:57:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61844315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:55,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:55,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:55,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818816555] [2023-11-06 22:57:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:55,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:55,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:55,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:55,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:55,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:55,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:55,481 INFO L124 PetriNetUnfolderBase]: 285/518 cut-off events. [2023-11-06 22:57:55,481 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-11-06 22:57:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 518 events. 285/518 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2870 event pairs, 51 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1518. Up to 412 conditions per place. [2023-11-06 22:57:55,487 INFO L140 encePairwiseOnDemand]: 124/126 looper letters, 25 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-11-06 22:57:55,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 195 flow [2023-11-06 22:57:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-11-06 22:57:55,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2023-11-06 22:57:55,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-11-06 22:57:55,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-11-06 22:57:55,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:55,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-11-06 22:57:55,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,491 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 110 flow. Second operand 3 states and 176 transitions. [2023-11-06 22:57:55,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 195 flow [2023-11-06 22:57:55,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:55,493 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 108 flow [2023-11-06 22:57:55,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-11-06 22:57:55,494 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-11-06 22:57:55,494 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 108 flow [2023-11-06 22:57:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:55,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:57:55,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:55,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1566967214, now seen corresponding path program 1 times [2023-11-06 22:57:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936583716] [2023-11-06 22:57:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:57:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936583716] [2023-11-06 22:57:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936583716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:55,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:55,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:55,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978626499] [2023-11-06 22:57:55,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:55,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:55,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:55,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:55,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:55,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:55,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:55,648 INFO L124 PetriNetUnfolderBase]: 284/582 cut-off events. [2023-11-06 22:57:55,648 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2023-11-06 22:57:55,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 582 events. 284/582 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3489 event pairs, 140 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1665. Up to 341 conditions per place. [2023-11-06 22:57:55,654 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 20 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2023-11-06 22:57:55,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 216 flow [2023-11-06 22:57:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-06 22:57:55,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2023-11-06 22:57:55,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-06 22:57:55,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-06 22:57:55,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:55,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-06 22:57:55,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,659 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 108 flow. Second operand 3 states and 175 transitions. [2023-11-06 22:57:55,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 216 flow [2023-11-06 22:57:55,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:55,661 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 184 flow [2023-11-06 22:57:55,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-11-06 22:57:55,662 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-11-06 22:57:55,662 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 184 flow [2023-11-06 22:57:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:55,662 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:57:55,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:55,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1331346216, now seen corresponding path program 1 times [2023-11-06 22:57:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589673553] [2023-11-06 22:57:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:57:55,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589673553] [2023-11-06 22:57:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589673553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:55,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:55,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176304185] [2023-11-06 22:57:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:55,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:57:55,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:57:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:57:55,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-11-06 22:57:55,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:55,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-11-06 22:57:55,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:55,824 INFO L124 PetriNetUnfolderBase]: 237/505 cut-off events. [2023-11-06 22:57:55,824 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2023-11-06 22:57:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 505 events. 237/505 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3001 event pairs, 79 based on Foata normal form. 30/531 useless extension candidates. Maximal degree in co-relation 1733. Up to 316 conditions per place. [2023-11-06 22:57:55,830 INFO L140 encePairwiseOnDemand]: 124/126 looper letters, 26 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-06 22:57:55,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 276 flow [2023-11-06 22:57:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2023-11-06 22:57:55,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2023-11-06 22:57:55,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2023-11-06 22:57:55,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2023-11-06 22:57:55,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:55,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2023-11-06 22:57:55,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,834 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 184 flow. Second operand 3 states and 173 transitions. [2023-11-06 22:57:55,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 276 flow [2023-11-06 22:57:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:55,838 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 170 flow [2023-11-06 22:57:55,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-06 22:57:55,838 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-11-06 22:57:55,838 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 170 flow [2023-11-06 22:57:55,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:55,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:55,839 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:57:55,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:57:55,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1680775481, now seen corresponding path program 1 times [2023-11-06 22:57:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:55,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356509988] [2023-11-06 22:57:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:55,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:57:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:55,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:57:55,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:57:55,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-06 22:57:55,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2023-11-06 22:57:55,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-06 22:57:55,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-06 22:57:55,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-06 22:57:55,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-06 22:57:55,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2023-11-06 22:57:55,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-06 22:57:55,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:57:55,866 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:55,867 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:57:55,867 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:57:55,888 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:57:55,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 192 flow [2023-11-06 22:57:55,906 INFO L124 PetriNetUnfolderBase]: 5/152 cut-off events. [2023-11-06 22:57:55,906 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:57:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 152 events. 5/152 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2023-11-06 22:57:55,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 192 flow [2023-11-06 22:57:55,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 82 transitions, 192 flow [2023-11-06 22:57:55,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:55,909 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 82 transitions, 192 flow [2023-11-06 22:57:55,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 82 transitions, 192 flow [2023-11-06 22:57:55,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 192 flow [2023-11-06 22:57:55,924 INFO L124 PetriNetUnfolderBase]: 5/152 cut-off events. [2023-11-06 22:57:55,924 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:57:55,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 152 events. 5/152 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2023-11-06 22:57:55,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 3256 [2023-11-06 22:57:57,948 INFO L134 LiptonReduction]: Checked pairs total: 5142 [2023-11-06 22:57:57,949 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-11-06 22:57:57,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:57,951 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;@6a925270, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:57,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 22:57:57,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:57,952 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:57:57,952 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:57,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:57,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:57,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:57:57,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash 20177, now seen corresponding path program 1 times [2023-11-06 22:57:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561784992] [2023-11-06 22:57:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:57,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:57,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561784992] [2023-11-06 22:57:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561784992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:57,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092603206] [2023-11-06 22:57:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:57,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:58,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 146 [2023-11-06 22:57:58,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 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) [2023-11-06 22:57:58,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:58,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 146 [2023-11-06 22:57:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:58,424 INFO L124 PetriNetUnfolderBase]: 2562/3819 cut-off events. [2023-11-06 22:57:58,424 INFO L125 PetriNetUnfolderBase]: For 1054/1054 co-relation queries the response was YES. [2023-11-06 22:57:58,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7808 conditions, 3819 events. 2562/3819 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 21353 event pairs, 2562 based on Foata normal form. 0/2454 useless extension candidates. Maximal degree in co-relation 1567. Up to 3585 conditions per place. [2023-11-06 22:57:58,461 INFO L140 encePairwiseOnDemand]: 142/146 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-06 22:57:58,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 110 flow [2023-11-06 22:57:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-11-06 22:57:58,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817351598173516 [2023-11-06 22:57:58,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-11-06 22:57:58,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-11-06 22:57:58,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:58,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-11-06 22:57:58,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,466 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 78 flow. Second operand 3 states and 211 transitions. [2023-11-06 22:57:58,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 110 flow [2023-11-06 22:57:58,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 104 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:58,468 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 68 flow [2023-11-06 22:57:58,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-11-06 22:57:58,469 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-06 22:57:58,470 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 68 flow [2023-11-06 22:57:58,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 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) [2023-11-06 22:57:58,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:58,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:57:58,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:57:58,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:57:58,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash 20176, now seen corresponding path program 1 times [2023-11-06 22:57:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:58,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245635383] [2023-11-06 22:57:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:58,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:58,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:58,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245635383] [2023-11-06 22:57:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245635383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:58,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:58,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:58,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758601545] [2023-11-06 22:57:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:58,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 146 [2023-11-06 22:57:58,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:58,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 146 [2023-11-06 22:57:58,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:58,813 INFO L124 PetriNetUnfolderBase]: 1623/2539 cut-off events. [2023-11-06 22:57:58,813 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2023-11-06 22:57:58,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2539 events. 1623/2539 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13745 event pairs, 1623 based on Foata normal form. 0/1828 useless extension candidates. Maximal degree in co-relation 5096. Up to 2305 conditions per place. [2023-11-06 22:57:58,843 INFO L140 encePairwiseOnDemand]: 144/146 looper letters, 17 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-11-06 22:57:58,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 21 transitions, 102 flow [2023-11-06 22:57:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-06 22:57:58,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2023-11-06 22:57:58,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-06 22:57:58,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-06 22:57:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:58,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-06 22:57:58,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,848 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 68 flow. Second operand 3 states and 202 transitions. [2023-11-06 22:57:58,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 21 transitions, 102 flow [2023-11-06 22:57:58,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:58,850 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 67 flow [2023-11-06 22:57:58,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-11-06 22:57:58,851 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-06 22:57:58,851 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 67 flow [2023-11-06 22:57:58,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:58,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:57:58,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:57:58,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:57:58,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash 601654904, now seen corresponding path program 1 times [2023-11-06 22:57:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:58,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878333316] [2023-11-06 22:57:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878333316] [2023-11-06 22:57:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878333316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:58,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:58,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848205975] [2023-11-06 22:57:58,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:58,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:58,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:58,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:57:58,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:57:58,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:59,266 INFO L124 PetriNetUnfolderBase]: 2300/3511 cut-off events. [2023-11-06 22:57:59,266 INFO L125 PetriNetUnfolderBase]: For 687/687 co-relation queries the response was YES. [2023-11-06 22:57:59,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7171 conditions, 3511 events. 2300/3511 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 20714 event pairs, 1224 based on Foata normal form. 0/2644 useless extension candidates. Maximal degree in co-relation 7160. Up to 2129 conditions per place. [2023-11-06 22:57:59,295 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-11-06 22:57:59,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 174 flow [2023-11-06 22:57:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-11-06 22:57:59,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863013698630137 [2023-11-06 22:57:59,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-11-06 22:57:59,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-11-06 22:57:59,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:59,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-11-06 22:57:59,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,301 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 67 flow. Second operand 3 states and 213 transitions. [2023-11-06 22:57:59,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 174 flow [2023-11-06 22:57:59,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:59,305 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 104 flow [2023-11-06 22:57:59,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-06 22:57:59,306 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-06 22:57:59,306 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 104 flow [2023-11-06 22:57:59,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:59,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:59,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:57:59,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:57:59,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2094155550, now seen corresponding path program 1 times [2023-11-06 22:57:59,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:59,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496816575] [2023-11-06 22:57:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:59,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:57:59,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:59,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496816575] [2023-11-06 22:57:59,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496816575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:59,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:59,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664363973] [2023-11-06 22:57:59,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:59,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:59,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:57:59,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:59,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:57:59,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:59,901 INFO L124 PetriNetUnfolderBase]: 3060/4717 cut-off events. [2023-11-06 22:57:59,901 INFO L125 PetriNetUnfolderBase]: For 3241/3241 co-relation queries the response was YES. [2023-11-06 22:57:59,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 4717 events. 3060/4717 cut-off events. For 3241/3241 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 30267 event pairs, 1352 based on Foata normal form. 0/3843 useless extension candidates. Maximal degree in co-relation 12033. Up to 2885 conditions per place. [2023-11-06 22:57:59,994 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-11-06 22:57:59,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 246 flow [2023-11-06 22:57:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2023-11-06 22:57:59,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840182648401826 [2023-11-06 22:57:59,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2023-11-06 22:57:59,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2023-11-06 22:57:59,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:59,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2023-11-06 22:57:59,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,999 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 104 flow. Second operand 3 states and 212 transitions. [2023-11-06 22:58:00,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 246 flow [2023-11-06 22:58:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:00,025 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 162 flow [2023-11-06 22:58:00,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-06 22:58:00,027 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-11-06 22:58:00,028 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 162 flow [2023-11-06 22:58:00,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:00,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:00,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:58:00,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:00,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash -492611897, now seen corresponding path program 1 times [2023-11-06 22:58:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742464648] [2023-11-06 22:58:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:00,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742464648] [2023-11-06 22:58:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742464648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:00,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:00,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092273686] [2023-11-06 22:58:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:00,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:58:00,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:00,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:58:00,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:00,677 INFO L124 PetriNetUnfolderBase]: 2474/3707 cut-off events. [2023-11-06 22:58:00,678 INFO L125 PetriNetUnfolderBase]: For 3539/3539 co-relation queries the response was YES. [2023-11-06 22:58:00,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11140 conditions, 3707 events. 2474/3707 cut-off events. For 3539/3539 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 22912 event pairs, 472 based on Foata normal form. 0/3135 useless extension candidates. Maximal degree in co-relation 11127. Up to 3026 conditions per place. [2023-11-06 22:58:00,718 INFO L140 encePairwiseOnDemand]: 144/146 looper letters, 41 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 22:58:00,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 325 flow [2023-11-06 22:58:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-11-06 22:58:00,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817351598173516 [2023-11-06 22:58:00,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-11-06 22:58:00,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-11-06 22:58:00,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:00,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-11-06 22:58:00,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,723 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 162 flow. Second operand 3 states and 211 transitions. [2023-11-06 22:58:00,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 325 flow [2023-11-06 22:58:00,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:00,734 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 146 flow [2023-11-06 22:58:00,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-06 22:58:00,735 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-11-06 22:58:00,735 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 146 flow [2023-11-06 22:58:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:00,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:00,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:58:00,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:00,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash -494310066, now seen corresponding path program 1 times [2023-11-06 22:58:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:00,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857536664] [2023-11-06 22:58:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857536664] [2023-11-06 22:58:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857536664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:00,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:00,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015740496] [2023-11-06 22:58:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:00,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:00,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:58:00,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:00,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:58:00,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:01,161 INFO L124 PetriNetUnfolderBase]: 1993/3029 cut-off events. [2023-11-06 22:58:01,161 INFO L125 PetriNetUnfolderBase]: For 2412/2412 co-relation queries the response was YES. [2023-11-06 22:58:01,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8810 conditions, 3029 events. 1993/3029 cut-off events. For 2412/2412 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 18241 event pairs, 335 based on Foata normal form. 0/2581 useless extension candidates. Maximal degree in co-relation 8797. Up to 2450 conditions per place. [2023-11-06 22:58:01,185 INFO L140 encePairwiseOnDemand]: 144/146 looper letters, 38 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 22:58:01,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 286 flow [2023-11-06 22:58:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-06 22:58:01,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2023-11-06 22:58:01,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-06 22:58:01,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-06 22:58:01,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:01,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-06 22:58:01,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,190 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 146 flow. Second operand 3 states and 208 transitions. [2023-11-06 22:58:01,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 286 flow [2023-11-06 22:58:01,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:01,192 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 144 flow [2023-11-06 22:58:01,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-06 22:58:01,193 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-11-06 22:58:01,193 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 144 flow [2023-11-06 22:58:01,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:01,194 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:58:01,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:01,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1833820734, now seen corresponding path program 1 times [2023-11-06 22:58:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:01,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934193306] [2023-11-06 22:58:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:01,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:58:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:01,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934193306] [2023-11-06 22:58:01,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934193306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:01,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:01,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:01,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029926120] [2023-11-06 22:58:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:01,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:58:01,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:01,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:58:01,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:01,678 INFO L124 PetriNetUnfolderBase]: 2430/3913 cut-off events. [2023-11-06 22:58:01,679 INFO L125 PetriNetUnfolderBase]: For 3913/3913 co-relation queries the response was YES. [2023-11-06 22:58:01,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11224 conditions, 3913 events. 2430/3913 cut-off events. For 3913/3913 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 26079 event pairs, 988 based on Foata normal form. 0/3420 useless extension candidates. Maximal degree in co-relation 11211. Up to 2459 conditions per place. [2023-11-06 22:58:01,713 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-11-06 22:58:01,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 315 flow [2023-11-06 22:58:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2023-11-06 22:58:01,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-11-06 22:58:01,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2023-11-06 22:58:01,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2023-11-06 22:58:01,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:01,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2023-11-06 22:58:01,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 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) [2023-11-06 22:58:01,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,718 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 144 flow. Second operand 3 states and 207 transitions. [2023-11-06 22:58:01,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 315 flow [2023-11-06 22:58:01,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:01,727 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 268 flow [2023-11-06 22:58:01,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-06 22:58:01,728 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-11-06 22:58:01,728 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 268 flow [2023-11-06 22:58:01,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:01,728 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:58:01,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:01,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1013864372, now seen corresponding path program 1 times [2023-11-06 22:58:01,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289937616] [2023-11-06 22:58:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:58:01,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289937616] [2023-11-06 22:58:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289937616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838286412] [2023-11-06 22:58:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:01,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:58:01,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:01,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:58:01,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:02,236 INFO L124 PetriNetUnfolderBase]: 1955/3099 cut-off events. [2023-11-06 22:58:02,236 INFO L125 PetriNetUnfolderBase]: For 5227/5227 co-relation queries the response was YES. [2023-11-06 22:58:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11089 conditions, 3099 events. 1955/3099 cut-off events. For 5227/5227 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 19835 event pairs, 409 based on Foata normal form. 204/3066 useless extension candidates. Maximal degree in co-relation 11075. Up to 2442 conditions per place. [2023-11-06 22:58:02,273 INFO L140 encePairwiseOnDemand]: 144/146 looper letters, 45 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2023-11-06 22:58:02,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 451 flow [2023-11-06 22:58:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-11-06 22:58:02,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680365296803653 [2023-11-06 22:58:02,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-11-06 22:58:02,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-11-06 22:58:02,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:02,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-11-06 22:58:02,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,279 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 268 flow. Second operand 3 states and 205 transitions. [2023-11-06 22:58:02,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 451 flow [2023-11-06 22:58:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 425 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:02,289 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 246 flow [2023-11-06 22:58:02,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-06 22:58:02,289 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-06 22:58:02,289 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 246 flow [2023-11-06 22:58:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:02,290 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:58:02,290 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:02,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -870290316, now seen corresponding path program 1 times [2023-11-06 22:58:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081430781] [2023-11-06 22:58:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:02,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:58:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081430781] [2023-11-06 22:58:02,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081430781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:02,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:02,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647420787] [2023-11-06 22:58:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:02,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:58:02,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:02,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:58:02,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:02,853 INFO L124 PetriNetUnfolderBase]: 2132/3676 cut-off events. [2023-11-06 22:58:02,853 INFO L125 PetriNetUnfolderBase]: For 5945/5945 co-relation queries the response was YES. [2023-11-06 22:58:02,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12055 conditions, 3676 events. 2132/3676 cut-off events. For 5945/5945 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 26062 event pairs, 890 based on Foata normal form. 0/3493 useless extension candidates. Maximal degree in co-relation 12041. Up to 2397 conditions per place. [2023-11-06 22:58:02,892 INFO L140 encePairwiseOnDemand]: 140/146 looper letters, 33 selfloop transitions, 21 changer transitions 0/57 dead transitions. [2023-11-06 22:58:02,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 494 flow [2023-11-06 22:58:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-11-06 22:58:02,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2023-11-06 22:58:02,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-11-06 22:58:02,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-11-06 22:58:02,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:02,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-11-06 22:58:02,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,896 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 246 flow. Second operand 3 states and 204 transitions. [2023-11-06 22:58:02,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 494 flow [2023-11-06 22:58:02,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:02,944 INFO L231 Difference]: Finished difference. Result has 42 places, 50 transitions, 464 flow [2023-11-06 22:58:02,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=42, PETRI_TRANSITIONS=50} [2023-11-06 22:58:02,944 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-11-06 22:58:02,945 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 50 transitions, 464 flow [2023-11-06 22:58:02,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:02,945 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:02,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 22:58:02,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:02,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:02,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1209192723, now seen corresponding path program 1 times [2023-11-06 22:58:02,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:02,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228365580] [2023-11-06 22:58:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:02,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:58:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228365580] [2023-11-06 22:58:03,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228365580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:03,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:03,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:03,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043053010] [2023-11-06 22:58:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:03,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:03,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:03,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-11-06 22:58:03,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 50 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:03,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-11-06 22:58:03,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:03,521 INFO L124 PetriNetUnfolderBase]: 1771/3145 cut-off events. [2023-11-06 22:58:03,521 INFO L125 PetriNetUnfolderBase]: For 8201/8201 co-relation queries the response was YES. [2023-11-06 22:58:03,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12126 conditions, 3145 events. 1771/3145 cut-off events. For 8201/8201 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 22385 event pairs, 569 based on Foata normal form. 170/3302 useless extension candidates. Maximal degree in co-relation 12111. Up to 1944 conditions per place. [2023-11-06 22:58:03,552 INFO L140 encePairwiseOnDemand]: 144/146 looper letters, 54 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-11-06 22:58:03,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 709 flow [2023-11-06 22:58:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-06 22:58:03,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2023-11-06 22:58:03,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-06 22:58:03,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-06 22:58:03,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:03,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-06 22:58:03,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,558 INFO L175 Difference]: Start difference. First operand has 42 places, 50 transitions, 464 flow. Second operand 3 states and 202 transitions. [2023-11-06 22:58:03,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 709 flow [2023-11-06 22:58:03,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:03,568 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 434 flow [2023-11-06 22:58:03,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=41, PETRI_TRANSITIONS=49} [2023-11-06 22:58:03,569 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-06 22:58:03,569 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 434 flow [2023-11-06 22:58:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:03,570 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:03,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 22:58:03,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-06 22:58:03,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:03,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1166339981, now seen corresponding path program 1 times [2023-11-06 22:58:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153657087] [2023-11-06 22:58:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:03,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:58:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:03,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:58:03,597 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:58:03,598 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-06 22:58:03,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2023-11-06 22:58:03,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-11-06 22:58:03,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-11-06 22:58:03,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2023-11-06 22:58:03,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2023-11-06 22:58:03,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2023-11-06 22:58:03,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2023-11-06 22:58:03,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2023-11-06 22:58:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 22:58:03,600 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:03,600 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:58:03,601 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-06 22:58:03,624 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:58:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 94 transitions, 228 flow [2023-11-06 22:58:03,646 INFO L124 PetriNetUnfolderBase]: 6/182 cut-off events. [2023-11-06 22:58:03,646 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:58:03,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 182 events. 6/182 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 452 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 165. Up to 12 conditions per place. [2023-11-06 22:58:03,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 94 transitions, 228 flow [2023-11-06 22:58:03,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 94 transitions, 228 flow [2023-11-06 22:58:03,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:58:03,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 94 transitions, 228 flow [2023-11-06 22:58:03,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 94 transitions, 228 flow [2023-11-06 22:58:03,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 94 transitions, 228 flow [2023-11-06 22:58:03,667 INFO L124 PetriNetUnfolderBase]: 6/182 cut-off events. [2023-11-06 22:58:03,668 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:58:03,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 182 events. 6/182 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 452 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 165. Up to 12 conditions per place. [2023-11-06 22:58:03,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 4730 [2023-11-06 22:58:05,758 INFO L134 LiptonReduction]: Checked pairs total: 7264 [2023-11-06 22:58:05,758 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-11-06 22:58:05,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:58:05,761 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;@6a925270, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:58:05,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 22:58:05,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:58:05,762 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:58:05,762 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:05,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:05,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:58:05,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:05,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash 25865, now seen corresponding path program 1 times [2023-11-06 22:58:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:05,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954851383] [2023-11-06 22:58:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954851383] [2023-11-06 22:58:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954851383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:05,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:05,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577632431] [2023-11-06 22:58:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:05,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 166 [2023-11-06 22:58:05,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:05,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:05,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 166 [2023-11-06 22:58:05,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:07,491 INFO L124 PetriNetUnfolderBase]: 13314/18347 cut-off events. [2023-11-06 22:58:07,491 INFO L125 PetriNetUnfolderBase]: For 6750/6750 co-relation queries the response was YES. [2023-11-06 22:58:07,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37697 conditions, 18347 events. 13314/18347 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 108235 event pairs, 13314 based on Foata normal form. 0/11860 useless extension candidates. Maximal degree in co-relation 7887. Up to 17409 conditions per place. [2023-11-06 22:58:07,764 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-06 22:58:07,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 138 flow [2023-11-06 22:58:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-11-06 22:58:07,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859437751004016 [2023-11-06 22:58:07,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-11-06 22:58:07,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-11-06 22:58:07,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:07,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-11-06 22:58:07,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,773 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 98 flow. Second operand 3 states and 242 transitions. [2023-11-06 22:58:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 138 flow [2023-11-06 22:58:07,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 126 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 22:58:07,778 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 82 flow [2023-11-06 22:58:07,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2023-11-06 22:58:07,786 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-11-06 22:58:07,786 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 82 flow [2023-11-06 22:58:07,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:07,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:58:07,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 22:58:07,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:07,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash 25867, now seen corresponding path program 1 times [2023-11-06 22:58:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362615762] [2023-11-06 22:58:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362615762] [2023-11-06 22:58:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362615762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762960892] [2023-11-06 22:58:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:07,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-11-06 22:58:07,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:07,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-11-06 22:58:07,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:09,154 INFO L124 PetriNetUnfolderBase]: 8535/12203 cut-off events. [2023-11-06 22:58:09,154 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2023-11-06 22:58:09,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24499 conditions, 12203 events. 8535/12203 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 71195 event pairs, 8535 based on Foata normal form. 0/8674 useless extension candidates. Maximal degree in co-relation 24488. Up to 11265 conditions per place. [2023-11-06 22:58:09,257 INFO L140 encePairwiseOnDemand]: 164/166 looper letters, 21 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-11-06 22:58:09,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 124 flow [2023-11-06 22:58:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-11-06 22:58:09,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678714859437751 [2023-11-06 22:58:09,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-11-06 22:58:09,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-11-06 22:58:09,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:09,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-11-06 22:58:09,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:09,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:09,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:09,263 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 82 flow. Second operand 3 states and 233 transitions. [2023-11-06 22:58:09,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 124 flow [2023-11-06 22:58:09,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:09,268 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 81 flow [2023-11-06 22:58:09,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2023-11-06 22:58:09,269 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-11-06 22:58:09,270 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 81 flow [2023-11-06 22:58:09,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:09,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:09,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:58:09,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 22:58:09,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:09,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash 771274279, now seen corresponding path program 1 times [2023-11-06 22:58:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:09,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432822688] [2023-11-06 22:58:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:09,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432822688] [2023-11-06 22:58:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432822688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:09,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859585360] [2023-11-06 22:58:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:09,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:09,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:09,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:09,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:09,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:09,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:10,772 INFO L124 PetriNetUnfolderBase]: 12384/17359 cut-off events. [2023-11-06 22:58:10,772 INFO L125 PetriNetUnfolderBase]: For 3872/3872 co-relation queries the response was YES. [2023-11-06 22:58:10,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35313 conditions, 17359 events. 12384/17359 cut-off events. For 3872/3872 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 107307 event pairs, 6940 based on Foata normal form. 0/12590 useless extension candidates. Maximal degree in co-relation 35301. Up to 11057 conditions per place. [2023-11-06 22:58:10,893 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-11-06 22:58:10,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 217 flow [2023-11-06 22:58:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-06 22:58:10,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919678714859438 [2023-11-06 22:58:10,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-06 22:58:10,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-06 22:58:10,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:10,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-06 22:58:10,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,898 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 81 flow. Second operand 3 states and 245 transitions. [2023-11-06 22:58:10,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 217 flow [2023-11-06 22:58:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:10,907 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 126 flow [2023-11-06 22:58:10,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-11-06 22:58:10,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-11-06 22:58:10,907 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 126 flow [2023-11-06 22:58:10,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:10,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 22:58:10,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:10,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1729635045, now seen corresponding path program 1 times [2023-11-06 22:58:10,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:10,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56127218] [2023-11-06 22:58:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:10,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:10,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56127218] [2023-11-06 22:58:10,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56127218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:10,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:10,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:10,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672286320] [2023-11-06 22:58:10,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:10,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:10,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:10,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:10,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:10,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:10,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:10,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:13,555 INFO L124 PetriNetUnfolderBase]: 17214/24347 cut-off events. [2023-11-06 22:58:13,555 INFO L125 PetriNetUnfolderBase]: For 17453/17453 co-relation queries the response was YES. [2023-11-06 22:58:13,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61703 conditions, 24347 events. 17214/24347 cut-off events. For 17453/17453 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 161946 event pairs, 8064 based on Foata normal form. 0/19319 useless extension candidates. Maximal degree in co-relation 61690. Up to 15695 conditions per place. [2023-11-06 22:58:13,695 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2023-11-06 22:58:13,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 309 flow [2023-11-06 22:58:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-06 22:58:13,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899598393574297 [2023-11-06 22:58:13,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-06 22:58:13,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-06 22:58:13,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:13,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-06 22:58:13,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,701 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 126 flow. Second operand 3 states and 244 transitions. [2023-11-06 22:58:13,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 309 flow [2023-11-06 22:58:13,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:13,871 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 202 flow [2023-11-06 22:58:13,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-06 22:58:13,872 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-11-06 22:58:13,872 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 202 flow [2023-11-06 22:58:13,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:13,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:13,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 22:58:13,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:13,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2077029357, now seen corresponding path program 1 times [2023-11-06 22:58:13,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:13,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705234298] [2023-11-06 22:58:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:58:13,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705234298] [2023-11-06 22:58:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705234298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:13,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344263750] [2023-11-06 22:58:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:13,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:13,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:13,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:13,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:13,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:16,004 INFO L124 PetriNetUnfolderBase]: 13946/19127 cut-off events. [2023-11-06 22:58:16,005 INFO L125 PetriNetUnfolderBase]: For 18150/18150 co-relation queries the response was YES. [2023-11-06 22:58:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56884 conditions, 19127 events. 13946/19127 cut-off events. For 18150/18150 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 120884 event pairs, 2700 based on Foata normal form. 0/15616 useless extension candidates. Maximal degree in co-relation 56870. Up to 15496 conditions per place. [2023-11-06 22:58:16,158 INFO L140 encePairwiseOnDemand]: 164/166 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-06 22:58:16,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 414 flow [2023-11-06 22:58:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:16,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-11-06 22:58:16,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879518072289157 [2023-11-06 22:58:16,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-11-06 22:58:16,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-11-06 22:58:16,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:16,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-11-06 22:58:16,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:16,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:16,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:16,163 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 202 flow. Second operand 3 states and 243 transitions. [2023-11-06 22:58:16,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 414 flow [2023-11-06 22:58:16,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:16,289 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 182 flow [2023-11-06 22:58:16,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-06 22:58:16,290 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-11-06 22:58:16,290 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 182 flow [2023-11-06 22:58:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:16,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:16,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-06 22:58:16,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:16,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2079074438, now seen corresponding path program 1 times [2023-11-06 22:58:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092042858] [2023-11-06 22:58:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:58:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092042858] [2023-11-06 22:58:16,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092042858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:16,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317937183] [2023-11-06 22:58:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:16,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:16,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:16,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:16,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:16,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:17,947 INFO L124 PetriNetUnfolderBase]: 11269/15577 cut-off events. [2023-11-06 22:58:17,947 INFO L125 PetriNetUnfolderBase]: For 12270/12270 co-relation queries the response was YES. [2023-11-06 22:58:18,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44803 conditions, 15577 events. 11269/15577 cut-off events. For 12270/12270 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 96335 event pairs, 1895 based on Foata normal form. 0/12791 useless extension candidates. Maximal degree in co-relation 44789. Up to 12576 conditions per place. [2023-11-06 22:58:18,063 INFO L140 encePairwiseOnDemand]: 164/166 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-06 22:58:18,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 369 flow [2023-11-06 22:58:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-11-06 22:58:18,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-11-06 22:58:18,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-11-06 22:58:18,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-11-06 22:58:18,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:18,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-11-06 22:58:18,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:18,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:18,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:18,068 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 182 flow. Second operand 3 states and 240 transitions. [2023-11-06 22:58:18,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 369 flow [2023-11-06 22:58:18,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:18,073 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 180 flow [2023-11-06 22:58:18,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-06 22:58:18,074 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-11-06 22:58:18,074 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 180 flow [2023-11-06 22:58:18,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:18,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:18,075 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-06 22:58:18,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:18,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash 376684308, now seen corresponding path program 1 times [2023-11-06 22:58:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175854658] [2023-11-06 22:58:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:58:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175854658] [2023-11-06 22:58:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175854658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672866515] [2023-11-06 22:58:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:18,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:18,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:18,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:18,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:18,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:18,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:18,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:20,567 INFO L124 PetriNetUnfolderBase]: 14850/21601 cut-off events. [2023-11-06 22:58:20,567 INFO L125 PetriNetUnfolderBase]: For 23674/23674 co-relation queries the response was YES. [2023-11-06 22:58:20,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61242 conditions, 21601 events. 14850/21601 cut-off events. For 23674/23674 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 150343 event pairs, 6228 based on Foata normal form. 0/18152 useless extension candidates. Maximal degree in co-relation 61228. Up to 14235 conditions per place. [2023-11-06 22:58:20,703 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 40 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2023-11-06 22:58:20,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 414 flow [2023-11-06 22:58:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-11-06 22:58:20,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799196787148594 [2023-11-06 22:58:20,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-11-06 22:58:20,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-11-06 22:58:20,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:20,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-11-06 22:58:20,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,708 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 180 flow. Second operand 3 states and 239 transitions. [2023-11-06 22:58:20,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 414 flow [2023-11-06 22:58:20,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:20,724 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 352 flow [2023-11-06 22:58:20,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-11-06 22:58:20,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-11-06 22:58:20,725 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 352 flow [2023-11-06 22:58:20,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:20,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:20,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-06 22:58:20,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:20,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1207684595, now seen corresponding path program 1 times [2023-11-06 22:58:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915109282] [2023-11-06 22:58:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:58:20,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915109282] [2023-11-06 22:58:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915109282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:20,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:20,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264961101] [2023-11-06 22:58:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:20,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:20,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:20,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:20,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:22,778 INFO L124 PetriNetUnfolderBase]: 11925/16849 cut-off events. [2023-11-06 22:58:22,778 INFO L125 PetriNetUnfolderBase]: For 29495/29495 co-relation queries the response was YES. [2023-11-06 22:58:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59448 conditions, 16849 events. 11925/16849 cut-off events. For 29495/29495 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 110257 event pairs, 2241 based on Foata normal form. 954/15750 useless extension candidates. Maximal degree in co-relation 59433. Up to 13484 conditions per place. [2023-11-06 22:58:22,925 INFO L140 encePairwiseOnDemand]: 164/166 looper letters, 64 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-06 22:58:22,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 624 flow [2023-11-06 22:58:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-11-06 22:58:22,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2023-11-06 22:58:22,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-11-06 22:58:22,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-11-06 22:58:22,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:22,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-11-06 22:58:22,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:22,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:22,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:22,931 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 352 flow. Second operand 3 states and 237 transitions. [2023-11-06 22:58:22,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 624 flow [2023-11-06 22:58:23,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:23,132 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 322 flow [2023-11-06 22:58:23,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-11-06 22:58:23,140 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-11-06 22:58:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 322 flow [2023-11-06 22:58:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:23,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:23,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:23,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-06 22:58:23,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:23,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1197134663, now seen corresponding path program 1 times [2023-11-06 22:58:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114236864] [2023-11-06 22:58:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:58:23,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:23,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114236864] [2023-11-06 22:58:23,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114236864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:23,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:23,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:23,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718085541] [2023-11-06 22:58:23,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:23,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:23,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:23,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:23,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:23,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:23,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:23,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:23,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:25,679 INFO L124 PetriNetUnfolderBase]: 14852/22111 cut-off events. [2023-11-06 22:58:25,679 INFO L125 PetriNetUnfolderBase]: For 40827/40827 co-relation queries the response was YES. [2023-11-06 22:58:25,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72358 conditions, 22111 events. 14852/22111 cut-off events. For 40827/40827 co-relation queries the response was YES. Maximal size of possible extension queue 1850. Compared 160745 event pairs, 5610 based on Foata normal form. 0/19811 useless extension candidates. Maximal degree in co-relation 72343. Up to 14769 conditions per place. [2023-11-06 22:58:25,831 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 47 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2023-11-06 22:58:25,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 689 flow [2023-11-06 22:58:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-06 22:58:25,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738955823293173 [2023-11-06 22:58:25,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-06 22:58:25,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-06 22:58:25,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:25,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-06 22:58:25,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:25,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:25,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:25,835 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 322 flow. Second operand 3 states and 236 transitions. [2023-11-06 22:58:25,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 689 flow [2023-11-06 22:58:25,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:25,857 INFO L231 Difference]: Finished difference. Result has 48 places, 69 transitions, 652 flow [2023-11-06 22:58:25,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=48, PETRI_TRANSITIONS=69} [2023-11-06 22:58:25,858 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-11-06 22:58:25,858 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 69 transitions, 652 flow [2023-11-06 22:58:25,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:25,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:25,858 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:25,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-06 22:58:25,859 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:25,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:25,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1543527634, now seen corresponding path program 1 times [2023-11-06 22:58:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:25,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628233837] [2023-11-06 22:58:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:25,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:58:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:26,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628233837] [2023-11-06 22:58:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628233837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:26,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:26,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:26,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025338657] [2023-11-06 22:58:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:26,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:26,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:26,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 69 transitions, 652 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:26,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:26,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:28,243 INFO L124 PetriNetUnfolderBase]: 11939/17421 cut-off events. [2023-11-06 22:58:28,243 INFO L125 PetriNetUnfolderBase]: For 47319/47319 co-relation queries the response was YES. [2023-11-06 22:58:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69709 conditions, 17421 events. 11939/17421 cut-off events. For 47319/47319 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 121328 event pairs, 2639 based on Foata normal form. 1012/17369 useless extension candidates. Maximal degree in co-relation 69693. Up to 13486 conditions per place. [2023-11-06 22:58:28,363 INFO L140 encePairwiseOnDemand]: 164/166 looper letters, 86 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2023-11-06 22:58:28,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 97 transitions, 1075 flow [2023-11-06 22:58:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-11-06 22:58:28,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46987951807228917 [2023-11-06 22:58:28,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-11-06 22:58:28,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-11-06 22:58:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-11-06 22:58:28,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,366 INFO L175 Difference]: Start difference. First operand has 48 places, 69 transitions, 652 flow. Second operand 3 states and 234 transitions. [2023-11-06 22:58:28,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 97 transitions, 1075 flow [2023-11-06 22:58:28,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 97 transitions, 1017 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:28,422 INFO L231 Difference]: Finished difference. Result has 47 places, 68 transitions, 606 flow [2023-11-06 22:58:28,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=47, PETRI_TRANSITIONS=68} [2023-11-06 22:58:28,422 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-11-06 22:58:28,422 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 68 transitions, 606 flow [2023-11-06 22:58:28,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:28,423 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:28,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-06 22:58:28,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:28,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash -783035787, now seen corresponding path program 1 times [2023-11-06 22:58:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:28,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953645589] [2023-11-06 22:58:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:28,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:58:28,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:28,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953645589] [2023-11-06 22:58:28,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953645589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714603404] [2023-11-06 22:58:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:28,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:28,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 68 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:28,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:28,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:30,819 INFO L124 PetriNetUnfolderBase]: 13634/21204 cut-off events. [2023-11-06 22:58:30,819 INFO L125 PetriNetUnfolderBase]: For 57977/57977 co-relation queries the response was YES. [2023-11-06 22:58:30,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78745 conditions, 21204 events. 13634/21204 cut-off events. For 57977/57977 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 163571 event pairs, 5130 based on Foata normal form. 0/20302 useless extension candidates. Maximal degree in co-relation 78729. Up to 14771 conditions per place. [2023-11-06 22:58:30,996 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 58 selfloop transitions, 49 changer transitions 0/110 dead transitions. [2023-11-06 22:58:30,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 110 transitions, 1216 flow [2023-11-06 22:58:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-11-06 22:58:30,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678714859437751 [2023-11-06 22:58:30,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-11-06 22:58:30,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-11-06 22:58:30,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:30,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-11-06 22:58:31,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,002 INFO L175 Difference]: Start difference. First operand has 47 places, 68 transitions, 606 flow. Second operand 3 states and 233 transitions. [2023-11-06 22:58:31,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 110 transitions, 1216 flow [2023-11-06 22:58:31,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 110 transitions, 1200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:31,042 INFO L231 Difference]: Finished difference. Result has 50 places, 101 transitions, 1216 flow [2023-11-06 22:58:31,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1216, PETRI_PLACES=50, PETRI_TRANSITIONS=101} [2023-11-06 22:58:31,043 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2023-11-06 22:58:31,043 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 101 transitions, 1216 flow [2023-11-06 22:58:31,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:31,044 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:31,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-06 22:58:31,044 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:31,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:31,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1495697495, now seen corresponding path program 1 times [2023-11-06 22:58:31,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321525313] [2023-11-06 22:58:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:31,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:58:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321525313] [2023-11-06 22:58:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321525313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:31,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734942204] [2023-11-06 22:58:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:58:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:58:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:58:31,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-11-06 22:58:31,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 101 transitions, 1216 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:31,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:31,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-11-06 22:58:31,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:33,581 INFO L124 PetriNetUnfolderBase]: 11331/18039 cut-off events. [2023-11-06 22:58:33,582 INFO L125 PetriNetUnfolderBase]: For 72733/72733 co-relation queries the response was YES. [2023-11-06 22:58:33,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77450 conditions, 18039 events. 11331/18039 cut-off events. For 72733/72733 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 140726 event pairs, 3585 based on Foata normal form. 862/18861 useless extension candidates. Maximal degree in co-relation 77433. Up to 10940 conditions per place. [2023-11-06 22:58:33,710 INFO L140 encePairwiseOnDemand]: 164/166 looper letters, 118 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2023-11-06 22:58:33,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 137 transitions, 1878 flow [2023-11-06 22:58:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-06 22:58:33,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2023-11-06 22:58:33,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-06 22:58:33,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-06 22:58:33,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:33,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-06 22:58:33,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,714 INFO L175 Difference]: Start difference. First operand has 50 places, 101 transitions, 1216 flow. Second operand 3 states and 231 transitions. [2023-11-06 22:58:33,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 137 transitions, 1878 flow [2023-11-06 22:58:33,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 137 transitions, 1780 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:33,780 INFO L231 Difference]: Finished difference. Result has 49 places, 100 transitions, 1146 flow [2023-11-06 22:58:33,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1146, PETRI_PLACES=49, PETRI_TRANSITIONS=100} [2023-11-06 22:58:33,781 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-11-06 22:58:33,781 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 100 transitions, 1146 flow [2023-11-06 22:58:33,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:33,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:33,782 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:33,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-06 22:58:33,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-06 22:58:33,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash -881966082, now seen corresponding path program 1 times [2023-11-06 22:58:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:33,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433722946] [2023-11-06 22:58:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:33,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:58:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:33,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:58:33,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:58:33,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-06 22:58:33,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2023-11-06 22:58:33,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-06 22:58:33,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-06 22:58:33,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-11-06 22:58:33,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-06 22:58:33,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-11-06 22:58:33,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2023-11-06 22:58:33,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-06 22:58:33,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-11-06 22:58:33,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-06 22:58:33,812 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:33,813 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:58:33,813 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-06 22:58:33,838 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:58:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 266 flow [2023-11-06 22:58:33,861 INFO L124 PetriNetUnfolderBase]: 7/212 cut-off events. [2023-11-06 22:58:33,861 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 22:58:33,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 212 events. 7/212 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 562 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 201. Up to 14 conditions per place. [2023-11-06 22:58:33,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 266 flow [2023-11-06 22:58:33,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 106 transitions, 266 flow [2023-11-06 22:58:33,865 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:58:33,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 266 flow [2023-11-06 22:58:33,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 266 flow [2023-11-06 22:58:33,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 266 flow [2023-11-06 22:58:33,886 INFO L124 PetriNetUnfolderBase]: 7/212 cut-off events. [2023-11-06 22:58:33,887 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-06 22:58:33,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 212 events. 7/212 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 562 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 201. Up to 14 conditions per place. [2023-11-06 22:58:33,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 6468 [2023-11-06 22:58:36,034 INFO L134 LiptonReduction]: Checked pairs total: 9239 [2023-11-06 22:58:36,035 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-06 22:58:36,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:58:36,036 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;@6a925270, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:58:36,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 22:58:36,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:58:36,037 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:58:36,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:36,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:36,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:58:36,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:58:36,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash 32207, now seen corresponding path program 1 times [2023-11-06 22:58:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:36,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278615753] [2023-11-06 22:58:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:36,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:36,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278615753] [2023-11-06 22:58:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278615753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:36,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:36,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:36,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380793933] [2023-11-06 22:58:36,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:36,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:36,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:36,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 186 [2023-11-06 22:58:36,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:36,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:36,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 186 [2023-11-06 22:58:36,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:43,716 INFO L124 PetriNetUnfolderBase]: 65538/85675 cut-off events. [2023-11-06 22:58:43,716 INFO L125 PetriNetUnfolderBase]: For 39518/39518 co-relation queries the response was YES. [2023-11-06 22:58:43,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176706 conditions, 85675 events. 65538/85675 cut-off events. For 39518/39518 co-relation queries the response was YES. Maximal size of possible extension queue 4418. Compared 523971 event pairs, 65538 based on Foata normal form. 0/55638 useless extension candidates. Maximal degree in co-relation 38031. Up to 81921 conditions per place. [2023-11-06 22:58:44,134 INFO L140 encePairwiseOnDemand]: 182/186 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-11-06 22:58:44,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 168 flow [2023-11-06 22:58:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-11-06 22:58:44,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2023-11-06 22:58:44,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-11-06 22:58:44,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-11-06 22:58:44,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:44,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-11-06 22:58:44,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:44,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:44,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:44,139 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 120 flow. Second operand 3 states and 273 transitions. [2023-11-06 22:58:44,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 168 flow [2023-11-06 22:58:44,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 148 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-06 22:58:44,186 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 96 flow [2023-11-06 22:58:44,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-11-06 22:58:44,187 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-11-06 22:58:44,187 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 96 flow [2023-11-06 22:58:44,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:44,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:44,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:58:44,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-06 22:58:44,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:58:44,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:44,188 INFO L85 PathProgramCache]: Analyzing trace with hash 32206, now seen corresponding path program 1 times [2023-11-06 22:58:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398536570] [2023-11-06 22:58:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:44,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398536570] [2023-11-06 22:58:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398536570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:44,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:44,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284151952] [2023-11-06 22:58:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:44,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:44,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:44,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:44,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2023-11-06 22:58:44,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:44,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:44,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2023-11-06 22:58:44,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand