./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:04:50,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:04:50,511 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:04:50,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:04:50,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:04:50,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:04:50,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:04:50,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:04:50,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:04:50,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:04:50,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:04:50,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:04:50,577 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:04:50,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:04:50,580 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:04:50,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:04:50,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:04:50,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:04:50,582 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:04:50,582 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:04:50,583 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:04:50,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:04:50,584 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:04:50,584 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:04:50,585 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:04:50,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:04:50,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:04:50,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:04:50,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:04:50,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:04:50,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:04:50,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:04:50,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:04:50,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:04:50,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:04:50,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:04:50,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:04:50,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:04:50,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:04:50,592 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_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2023-11-21 22:04:50,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:04:50,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:04:50,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:04:50,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:04:50,949 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:04:50,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2023-11-21 22:04:54,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:04:54,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:04:54,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2023-11-21 22:04:54,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/data/fca2133df/8f34854b95da46ea8298be0c5b025bc7/FLAG5f341c0a2 [2023-11-21 22:04:54,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/data/fca2133df/8f34854b95da46ea8298be0c5b025bc7 [2023-11-21 22:04:54,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:04:54,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:04:54,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:04:54,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:04:54,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:04:54,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:04:54" (1/1) ... [2023-11-21 22:04:54,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@becda1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:54, skipping insertion in model container [2023-11-21 22:04:54,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:04:54" (1/1) ... [2023-11-21 22:04:54,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:04:55,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:04:55,202 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:04:55,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:04:55,331 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:04:55,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55 WrapperNode [2023-11-21 22:04:55,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:04:55,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:04:55,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:04:55,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:04:55,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,410 INFO L138 Inliner]: procedures = 272, calls = 65, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 235 [2023-11-21 22:04:55,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:04:55,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:04:55,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:04:55,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:04:55,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:04:55,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:04:55,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:04:55,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:04:55,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (1/1) ... [2023-11-21 22:04:55,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:04:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:04:55,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:04:55,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:04:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:04:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:04:55,553 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:04:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:04:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:04:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:04:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:04:55,554 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:04:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:04:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:04:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:04:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:04:55,556 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:04:55,749 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:04:55,757 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:04:56,197 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:04:56,496 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:04:56,496 INFO L308 CfgBuilder]: Removed 22 assume(true) statements. [2023-11-21 22:04:56,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:56 BoogieIcfgContainer [2023-11-21 22:04:56,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:04:56,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:04:56,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:04:56,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:04:56,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:04:54" (1/3) ... [2023-11-21 22:04:56,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b256c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:04:56, skipping insertion in model container [2023-11-21 22:04:56,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:04:55" (2/3) ... [2023-11-21 22:04:56,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b256c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:04:56, skipping insertion in model container [2023-11-21 22:04:56,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:04:56" (3/3) ... [2023-11-21 22:04:56,510 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2023-11-21 22:04:56,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:04:56,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-11-21 22:04:56,532 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:04:56,610 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-21 22:04:56,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 137 transitions, 281 flow [2023-11-21 22:04:56,771 INFO L124 PetriNetUnfolderBase]: 41/207 cut-off events. [2023-11-21 22:04:56,771 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:04:56,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 41/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1044 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-11-21 22:04:56,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 137 transitions, 281 flow [2023-11-21 22:04:56,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 137 transitions, 281 flow [2023-11-21 22:04:56,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:04:56,830 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;@59ef3469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:04:56,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-21 22:04:56,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:04:56,837 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-21 22:04:56,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:04:56,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:04:56,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:04:56,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-21 22:04:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:04:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 604423, now seen corresponding path program 1 times [2023-11-21 22:04:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:04:56,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414459674] [2023-11-21 22:04:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:04:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:04:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:04:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:04:57,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:04:57,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414459674] [2023-11-21 22:04:57,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414459674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:04:57,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:04:57,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:04:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745156029] [2023-11-21 22:04:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:04:57,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:04:57,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:04:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:04:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:04:57,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 137 [2023-11-21 22:04:57,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 281 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) [2023-11-21 22:04:57,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:04:57,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 137 [2023-11-21 22:04:57,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:04:57,765 INFO L124 PetriNetUnfolderBase]: 524/1815 cut-off events. [2023-11-21 22:04:57,765 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2023-11-21 22:04:57,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1815 events. 524/1815 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14162 event pairs, 456 based on Foata normal form. 381/1916 useless extension candidates. Maximal degree in co-relation 2758. Up to 998 conditions per place. [2023-11-21 22:04:57,784 INFO L140 encePairwiseOnDemand]: 109/137 looper letters, 59 selfloop transitions, 3 changer transitions 8/131 dead transitions. [2023-11-21 22:04:57,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 131 transitions, 409 flow [2023-11-21 22:04:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:04:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:04:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-11-21 22:04:57,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7055961070559611 [2023-11-21 22:04:57,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-11-21 22:04:57,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-11-21 22:04:57,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:04:57,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-11-21 22:04:57,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:57,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:57,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:57,818 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 281 flow. Second operand 3 states and 290 transitions. [2023-11-21 22:04:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 131 transitions, 409 flow [2023-11-21 22:04:57,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 409 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:04:57,828 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 238 flow [2023-11-21 22:04:57,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2023-11-21 22:04:57,835 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 1 predicate places. [2023-11-21 22:04:57,836 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 238 flow [2023-11-21 22:04:57,836 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) [2023-11-21 22:04:57,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:04:57,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:04:57,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:04:57,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-21 22:04:57,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:04:57,838 INFO L85 PathProgramCache]: Analyzing trace with hash 18740399, now seen corresponding path program 1 times [2023-11-21 22:04:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:04:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484404746] [2023-11-21 22:04:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:04:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:04:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:04:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:04:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:04:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484404746] [2023-11-21 22:04:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484404746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:04:57,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:04:57,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:04:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477179453] [2023-11-21 22:04:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:04:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:04:57,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:04:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:04:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:04:58,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 137 [2023-11-21 22:04:58,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:58,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:04:58,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 137 [2023-11-21 22:04:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:04:58,455 INFO L124 PetriNetUnfolderBase]: 543/1851 cut-off events. [2023-11-21 22:04:58,456 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-21 22:04:58,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 1851 events. 543/1851 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14497 event pairs, 456 based on Foata normal form. 0/1631 useless extension candidates. Maximal degree in co-relation 2877. Up to 996 conditions per place. [2023-11-21 22:04:58,472 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 67 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-11-21 22:04:58,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 127 transitions, 410 flow [2023-11-21 22:04:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:04:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:04:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-21 22:04:58,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961070559610706 [2023-11-21 22:04:58,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-21 22:04:58,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-21 22:04:58,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:04:58,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-21 22:04:58,479 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) [2023-11-21 22:04:58,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:58,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:58,482 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 238 flow. Second operand 3 states and 245 transitions. [2023-11-21 22:04:58,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 127 transitions, 410 flow [2023-11-21 22:04:58,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 127 transitions, 399 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-21 22:04:58,491 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 227 flow [2023-11-21 22:04:58,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2023-11-21 22:04:58,492 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -2 predicate places. [2023-11-21 22:04:58,493 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 227 flow [2023-11-21 22:04:58,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:58,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:04:58,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:04:58,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:04:58,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-21 22:04:58,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:04:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash 18740400, now seen corresponding path program 1 times [2023-11-21 22:04:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:04:58,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991382420] [2023-11-21 22:04:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:04:58,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:04:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:04:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:04:58,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:04:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991382420] [2023-11-21 22:04:58,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991382420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:04:58,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:04:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:04:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510303813] [2023-11-21 22:04:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:04:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:04:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:04:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:04:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:04:58,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 137 [2023-11-21 22:04:58,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 227 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) [2023-11-21 22:04:58,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:04:58,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 137 [2023-11-21 22:04:58,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:04:59,111 INFO L124 PetriNetUnfolderBase]: 521/1794 cut-off events. [2023-11-21 22:04:59,111 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:04:59,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2838 conditions, 1794 events. 521/1794 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13943 event pairs, 456 based on Foata normal form. 1/1571 useless extension candidates. Maximal degree in co-relation 2807. Up to 994 conditions per place. [2023-11-21 22:04:59,128 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 67 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-11-21 22:04:59,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 128 transitions, 405 flow [2023-11-21 22:04:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:04:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:04:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-21 22:04:59,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6180048661800487 [2023-11-21 22:04:59,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-21 22:04:59,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-21 22:04:59,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:04:59,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-21 22:04:59,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:59,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:59,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:59,138 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 227 flow. Second operand 3 states and 254 transitions. [2023-11-21 22:04:59,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 128 transitions, 405 flow [2023-11-21 22:04:59,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 128 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:04:59,144 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 233 flow [2023-11-21 22:04:59,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2023-11-21 22:04:59,146 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -1 predicate places. [2023-11-21 22:04:59,147 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 233 flow [2023-11-21 22:04:59,147 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) [2023-11-21 22:04:59,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:04:59,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:04:59,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:04:59,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-21 22:04:59,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:04:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1544093321, now seen corresponding path program 1 times [2023-11-21 22:04:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:04:59,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916212650] [2023-11-21 22:04:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:04:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:04:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:04:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:04:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:04:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916212650] [2023-11-21 22:04:59,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916212650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:04:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616165580] [2023-11-21 22:04:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:04:59,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:04:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:04:59,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:04:59,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:04:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:04:59,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:04:59,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:04:59,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:04:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:04:59,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:04:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:04:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616165580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:04:59,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:04:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-21 22:04:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629922987] [2023-11-21 22:04:59,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:04:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:04:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:04:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:04:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:04:59,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 137 [2023-11-21 22:04:59,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:04:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:04:59,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 137 [2023-11-21 22:04:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:05:00,041 INFO L124 PetriNetUnfolderBase]: 58/188 cut-off events. [2023-11-21 22:05:00,042 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-21 22:05:00,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 188 events. 58/188 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 800 event pairs, 0 based on Foata normal form. 40/216 useless extension candidates. Maximal degree in co-relation 339. Up to 117 conditions per place. [2023-11-21 22:05:00,044 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 44 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-21 22:05:00,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 250 flow [2023-11-21 22:05:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:05:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:05:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-11-21 22:05:00,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255474452554745 [2023-11-21 22:05:00,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-11-21 22:05:00,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-11-21 22:05:00,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:05:00,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-11-21 22:05:00,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:00,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:00,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:00,051 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 233 flow. Second operand 4 states and 288 transitions. [2023-11-21 22:05:00,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 250 flow [2023-11-21 22:05:00,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:05:00,054 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 114 flow [2023-11-21 22:05:00,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-21 22:05:00,055 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -54 predicate places. [2023-11-21 22:05:00,055 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 114 flow [2023-11-21 22:05:00,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:00,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:00,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-21 22:05:00,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:00,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:00,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-21 22:05:00,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash -622252007, now seen corresponding path program 1 times [2023-11-21 22:05:00,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:00,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596846663] [2023-11-21 22:05:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:00,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:00,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:05:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:00,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:05:00,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:05:00,381 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 39 remaining) [2023-11-21 22:05:00,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (37 of 39 remaining) [2023-11-21 22:05:00,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2023-11-21 22:05:00,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2023-11-21 22:05:00,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2023-11-21 22:05:00,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2023-11-21 22:05:00,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2023-11-21 22:05:00,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2023-11-21 22:05:00,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2023-11-21 22:05:00,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2023-11-21 22:05:00,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2023-11-21 22:05:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2023-11-21 22:05:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2023-11-21 22:05:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2023-11-21 22:05:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2023-11-21 22:05:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2023-11-21 22:05:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (22 of 39 remaining) [2023-11-21 22:05:00,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2023-11-21 22:05:00,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2023-11-21 22:05:00,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2023-11-21 22:05:00,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 39 remaining) [2023-11-21 22:05:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 39 remaining) [2023-11-21 22:05:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 39 remaining) [2023-11-21 22:05:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 39 remaining) [2023-11-21 22:05:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 39 remaining) [2023-11-21 22:05:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2023-11-21 22:05:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2023-11-21 22:05:00,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 39 remaining) [2023-11-21 22:05:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2023-11-21 22:05:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2023-11-21 22:05:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2023-11-21 22:05:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2023-11-21 22:05:00,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2023-11-21 22:05:00,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2023-11-21 22:05:00,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2023-11-21 22:05:00,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2023-11-21 22:05:00,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2023-11-21 22:05:00,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2023-11-21 22:05:00,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 39 remaining) [2023-11-21 22:05:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:05:00,412 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-21 22:05:00,414 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:05:00,415 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:05:00,466 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:05:00,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 198 transitions, 412 flow [2023-11-21 22:05:00,515 INFO L124 PetriNetUnfolderBase]: 69/350 cut-off events. [2023-11-21 22:05:00,515 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:05:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 350 events. 69/350 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2006 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 209. Up to 12 conditions per place. [2023-11-21 22:05:00,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 198 transitions, 412 flow [2023-11-21 22:05:00,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 198 transitions, 412 flow [2023-11-21 22:05:00,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:05:00,529 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;@59ef3469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:05:00,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-21 22:05:00,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:05:00,531 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-21 22:05:00,532 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:05:00,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:00,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:05:00,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-21 22:05:00,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash 801037, now seen corresponding path program 1 times [2023-11-21 22:05:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294942845] [2023-11-21 22:05:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294942845] [2023-11-21 22:05:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294942845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:00,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:00,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:05:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474329862] [2023-11-21 22:05:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:05:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:05:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:00,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-11-21 22:05:00,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:00,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:00,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-11-21 22:05:00,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:05:06,996 INFO L124 PetriNetUnfolderBase]: 21468/47561 cut-off events. [2023-11-21 22:05:06,997 INFO L125 PetriNetUnfolderBase]: For 146/166 co-relation queries the response was YES. [2023-11-21 22:05:07,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79553 conditions, 47561 events. 21468/47561 cut-off events. For 146/166 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 526879 event pairs, 19171 based on Foata normal form. 12068/53549 useless extension candidates. Maximal degree in co-relation 68835. Up to 30618 conditions per place. [2023-11-21 22:05:07,438 INFO L140 encePairwiseOnDemand]: 158/198 looper letters, 105 selfloop transitions, 3 changer transitions 2/198 dead transitions. [2023-11-21 22:05:07,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 198 transitions, 632 flow [2023-11-21 22:05:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:05:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:05:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-21 22:05:07,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-21 22:05:07,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-21 22:05:07,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-21 22:05:07,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:05:07,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-21 22:05:07,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:07,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:07,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:07,447 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 412 flow. Second operand 3 states and 435 transitions. [2023-11-21 22:05:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 198 transitions, 632 flow [2023-11-21 22:05:07,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 198 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:05:07,462 INFO L231 Difference]: Finished difference. Result has 161 places, 158 transitions, 343 flow [2023-11-21 22:05:07,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=161, PETRI_TRANSITIONS=158} [2023-11-21 22:05:07,465 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 0 predicate places. [2023-11-21 22:05:07,466 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 158 transitions, 343 flow [2023-11-21 22:05:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:07,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:07,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:05:07,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:05:07,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-21 22:05:07,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash 24835631, now seen corresponding path program 1 times [2023-11-21 22:05:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057138917] [2023-11-21 22:05:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:07,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057138917] [2023-11-21 22:05:07,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057138917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:07,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:07,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:05:07,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530701250] [2023-11-21 22:05:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:07,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:05:07,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:05:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 198 [2023-11-21 22:05:07,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 158 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:07,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:07,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 198 [2023-11-21 22:05:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:05:12,329 INFO L124 PetriNetUnfolderBase]: 22270/49166 cut-off events. [2023-11-21 22:05:12,330 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2023-11-21 22:05:12,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83239 conditions, 49166 events. 22270/49166 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 546144 event pairs, 19152 based on Foata normal form. 0/43826 useless extension candidates. Maximal degree in co-relation 80257. Up to 30549 conditions per place. [2023-11-21 22:05:12,617 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 107 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2023-11-21 22:05:12,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 194 transitions, 633 flow [2023-11-21 22:05:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:05:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:05:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-21 22:05:12,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-21 22:05:12,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-21 22:05:12,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-21 22:05:12,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:05:12,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-21 22:05:12,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:12,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:12,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:12,624 INFO L175 Difference]: Start difference. First operand has 161 places, 158 transitions, 343 flow. Second operand 3 states and 366 transitions. [2023-11-21 22:05:12,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 194 transitions, 633 flow [2023-11-21 22:05:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 194 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-21 22:05:12,897 INFO L231 Difference]: Finished difference. Result has 158 places, 156 transitions, 332 flow [2023-11-21 22:05:12,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=158, PETRI_TRANSITIONS=156} [2023-11-21 22:05:12,900 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -3 predicate places. [2023-11-21 22:05:12,900 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 156 transitions, 332 flow [2023-11-21 22:05:12,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:12,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:12,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:05:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:05:12,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-21 22:05:12,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash 24835632, now seen corresponding path program 1 times [2023-11-21 22:05:12,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204021945] [2023-11-21 22:05:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:13,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:13,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204021945] [2023-11-21 22:05:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204021945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:13,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:13,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:05:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799645607] [2023-11-21 22:05:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:05:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:05:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:13,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-11-21 22:05:13,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 156 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:13,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:13,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-11-21 22:05:13,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:05:18,043 INFO L124 PetriNetUnfolderBase]: 20916/47278 cut-off events. [2023-11-21 22:05:18,043 INFO L125 PetriNetUnfolderBase]: For 307/327 co-relation queries the response was YES. [2023-11-21 22:05:18,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79131 conditions, 47278 events. 20916/47278 cut-off events. For 307/327 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 537137 event pairs, 9576 based on Foata normal form. 1/41971 useless extension candidates. Maximal degree in co-relation 73099. Up to 31281 conditions per place. [2023-11-21 22:05:18,460 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 89 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2023-11-21 22:05:18,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 177 transitions, 556 flow [2023-11-21 22:05:18,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:05:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:05:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-11-21 22:05:18,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601010101010101 [2023-11-21 22:05:18,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-11-21 22:05:18,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-11-21 22:05:18,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:05:18,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-11-21 22:05:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:18,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:18,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:18,473 INFO L175 Difference]: Start difference. First operand has 158 places, 156 transitions, 332 flow. Second operand 3 states and 357 transitions. [2023-11-21 22:05:18,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 177 transitions, 556 flow [2023-11-21 22:05:18,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 177 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:05:18,544 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 342 flow [2023-11-21 22:05:18,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=159, PETRI_TRANSITIONS=157} [2023-11-21 22:05:18,546 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -2 predicate places. [2023-11-21 22:05:18,546 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 342 flow [2023-11-21 22:05:18,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:18,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:18,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:05:18,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-21 22:05:18,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1131353692, now seen corresponding path program 1 times [2023-11-21 22:05:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353180350] [2023-11-21 22:05:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353180350] [2023-11-21 22:05:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353180350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:05:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011181194] [2023-11-21 22:05:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:18,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:05:18,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:05:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:18,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:05:18,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:05:18,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:05:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:18,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:05:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011181194] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:05:18,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:05:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-21 22:05:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74410028] [2023-11-21 22:05:18,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:05:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:05:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:05:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:05:19,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-11-21 22:05:19,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 157 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:19,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:19,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-11-21 22:05:19,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:05:23,013 INFO L124 PetriNetUnfolderBase]: 20367/43831 cut-off events. [2023-11-21 22:05:23,013 INFO L125 PetriNetUnfolderBase]: For 1035/1035 co-relation queries the response was YES. [2023-11-21 22:05:23,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75366 conditions, 43831 events. 20367/43831 cut-off events. For 1035/1035 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 481605 event pairs, 419 based on Foata normal form. 440/40059 useless extension candidates. Maximal degree in co-relation 75203. Up to 26133 conditions per place. [2023-11-21 22:05:23,199 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 166 selfloop transitions, 4 changer transitions 0/255 dead transitions. [2023-11-21 22:05:23,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 255 transitions, 876 flow [2023-11-21 22:05:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:05:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:05:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 608 transitions. [2023-11-21 22:05:23,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6141414141414141 [2023-11-21 22:05:23,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 608 transitions. [2023-11-21 22:05:23,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 608 transitions. [2023-11-21 22:05:23,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:05:23,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 608 transitions. [2023-11-21 22:05:23,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:23,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:23,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:23,220 INFO L175 Difference]: Start difference. First operand has 159 places, 157 transitions, 342 flow. Second operand 5 states and 608 transitions. [2023-11-21 22:05:23,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 255 transitions, 876 flow [2023-11-21 22:05:23,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 255 transitions, 874 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:05:23,239 INFO L231 Difference]: Finished difference. Result has 161 places, 156 transitions, 344 flow [2023-11-21 22:05:23,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=161, PETRI_TRANSITIONS=156} [2023-11-21 22:05:23,240 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 0 predicate places. [2023-11-21 22:05:23,240 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 156 transitions, 344 flow [2023-11-21 22:05:23,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:23,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:23,241 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-11-21 22:05:23,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:05:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf3cb02c-b400-4535-b613-a08fbf24170a/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:05:23,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-11-21 22:05:23,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash -415831126, now seen corresponding path program 1 times [2023-11-21 22:05:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286057276] [2023-11-21 22:05:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:23,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:05:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:05:23,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:05:23,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:05:23,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2023-11-21 22:05:23,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (48 of 50 remaining) [2023-11-21 22:05:23,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2023-11-21 22:05:23,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2023-11-21 22:05:23,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2023-11-21 22:05:23,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2023-11-21 22:05:23,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2023-11-21 22:05:23,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2023-11-21 22:05:23,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2023-11-21 22:05:23,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2023-11-21 22:05:23,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2023-11-21 22:05:23,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2023-11-21 22:05:23,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2023-11-21 22:05:23,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2023-11-21 22:05:23,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2023-11-21 22:05:23,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2023-11-21 22:05:23,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (33 of 50 remaining) [2023-11-21 22:05:23,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2023-11-21 22:05:23,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2023-11-21 22:05:23,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2023-11-21 22:05:23,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2023-11-21 22:05:23,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2023-11-21 22:05:23,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2023-11-21 22:05:23,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2023-11-21 22:05:23,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2023-11-21 22:05:23,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2023-11-21 22:05:23,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2023-11-21 22:05:23,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2023-11-21 22:05:23,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2023-11-21 22:05:23,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2023-11-21 22:05:23,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2023-11-21 22:05:23,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2023-11-21 22:05:23,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2023-11-21 22:05:23,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2023-11-21 22:05:23,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2023-11-21 22:05:23,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2023-11-21 22:05:23,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2023-11-21 22:05:23,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2023-11-21 22:05:23,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2023-11-21 22:05:23,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2023-11-21 22:05:23,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2023-11-21 22:05:23,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2023-11-21 22:05:23,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2023-11-21 22:05:23,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2023-11-21 22:05:23,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2023-11-21 22:05:23,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2023-11-21 22:05:23,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2023-11-21 22:05:23,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2023-11-21 22:05:23,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2023-11-21 22:05:23,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2023-11-21 22:05:23,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:05:23,498 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-21 22:05:23,498 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:05:23,499 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:05:23,552 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:05:23,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 259 transitions, 545 flow [2023-11-21 22:05:23,646 INFO L124 PetriNetUnfolderBase]: 100/514 cut-off events. [2023-11-21 22:05:23,646 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-21 22:05:23,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 514 events. 100/514 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3148 event pairs, 1 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 359. Up to 16 conditions per place. [2023-11-21 22:05:23,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 259 transitions, 545 flow [2023-11-21 22:05:23,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 259 transitions, 545 flow [2023-11-21 22:05:23,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:05:23,665 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;@59ef3469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:05:23,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-21 22:05:23,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:05:23,668 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-21 22:05:23,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:05:23,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:23,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:05:23,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-21 22:05:23,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1058224, now seen corresponding path program 1 times [2023-11-21 22:05:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:23,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406413908] [2023-11-21 22:05:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:23,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:23,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:23,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406413908] [2023-11-21 22:05:23,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406413908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:23,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:23,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:05:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142423386] [2023-11-21 22:05:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:05:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:05:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:23,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 259 [2023-11-21 22:05:23,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 259 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:23,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:23,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 259 [2023-11-21 22:05:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand