./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya --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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:54:49,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:54:50,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:54:50,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:54:50,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:54:50,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:54:50,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:54:50,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:54:50,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:54:50,049 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:54:50,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:54:50,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:54:50,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:54:50,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:54:50,052 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:54:50,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:54:50,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:54:50,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:54:50,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:54:50,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:54:50,055 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:54:50,055 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:54:50,056 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:54:50,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:54:50,057 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:54:50,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:54:50,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:54:50,058 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:54:50,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:54:50,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:54:50,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:54:50,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:54:50,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:54:50,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:54:50,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:54:50,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:54:50,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:54:50,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:54:50,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:54:50,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:54:50,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:54:50,062 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_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2023-11-29 05:54:50,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:54:50,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:54:50,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:54:50,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:54:50,287 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:54:50,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2023-11-29 05:54:52,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:54:53,164 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:54:53,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2023-11-29 05:54:53,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/data/468aa8006/e83f1fb99d9b4285a4653a1f8ff80dc7/FLAG63902bb37 [2023-11-29 05:54:53,182 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/data/468aa8006/e83f1fb99d9b4285a4653a1f8ff80dc7 [2023-11-29 05:54:53,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:54:53,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:54:53,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:54:53,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:54:53,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:54:53,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16883a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53, skipping insertion in model container [2023-11-29 05:54:53,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,216 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:54:53,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:54:53,393 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:54:53,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:54:53,424 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:54:53,425 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:54:53,432 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:54:53,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53 WrapperNode [2023-11-29 05:54:53,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:54:53,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:54:53,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:54:53,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:54:53,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,474 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 152 [2023-11-29 05:54:53,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:54:53,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:54:53,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:54:53,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:54:53,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,508 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 05:54:53,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:54:53,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:54:53,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:54:53,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:54:53,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (1/1) ... [2023-11-29 05:54:53,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:54:53,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:54:53,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:54:53,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:54:53,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:54:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:54:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:54:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:54:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:54:53,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:54:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:54:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:54:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:54:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:54:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:54:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:54:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:54:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:54:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:54:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:54:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 05:54:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 05:54:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:54:53,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:54:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:54:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:54:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:54:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:54:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:54:53,595 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:54:53,716 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:54:53,719 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:54:53,962 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:54:54,159 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:54:54,159 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:54:54,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:54:54 BoogieIcfgContainer [2023-11-29 05:54:54,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:54:54,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:54:54,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:54:54,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:54:54,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:54:53" (1/3) ... [2023-11-29 05:54:54,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33582c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:54:54, skipping insertion in model container [2023-11-29 05:54:54,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:54:53" (2/3) ... [2023-11-29 05:54:54,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33582c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:54:54, skipping insertion in model container [2023-11-29 05:54:54,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:54:54" (3/3) ... [2023-11-29 05:54:54,169 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-11-29 05:54:54,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:54:54,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 05:54:54,188 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:54:54,238 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:54:54,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 59 transitions, 139 flow [2023-11-29 05:54:54,327 INFO L124 PetriNetUnfolderBase]: 4/56 cut-off events. [2023-11-29 05:54:54,327 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:54:54,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 4/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-29 05:54:54,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 59 transitions, 139 flow [2023-11-29 05:54:54,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 128 flow [2023-11-29 05:54:54,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:54:54,374 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;@2dccd2ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:54:54,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 05:54:54,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:54:54,377 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 05:54:54,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:54:54,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:54,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 05:54:54,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:54,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 11917, now seen corresponding path program 1 times [2023-11-29 05:54:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044537026] [2023-11-29 05:54:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:54,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:54,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044537026] [2023-11-29 05:54:54,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044537026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:54,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:54,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:54:54,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261951712] [2023-11-29 05:54:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:54,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:54,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2023-11-29 05:54:54,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:54,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:54,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2023-11-29 05:54:54,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:55,033 INFO L124 PetriNetUnfolderBase]: 840/1414 cut-off events. [2023-11-29 05:54:55,033 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-29 05:54:55,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1414 events. 840/1414 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7632 event pairs, 544 based on Foata normal form. 1/968 useless extension candidates. Maximal degree in co-relation 2510. Up to 1154 conditions per place. [2023-11-29 05:54:55,052 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 25 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-29 05:54:55,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 172 flow [2023-11-29 05:54:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-29 05:54:55,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655367231638418 [2023-11-29 05:54:55,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-29 05:54:55,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-29 05:54:55,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:55,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-29 05:54:55,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,078 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 128 flow. Second operand 3 states and 116 transitions. [2023-11-29 05:54:55,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 172 flow [2023-11-29 05:54:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:54:55,114 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 110 flow [2023-11-29 05:54:55,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-29 05:54:55,119 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2023-11-29 05:54:55,119 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 110 flow [2023-11-29 05:54:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:55,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 05:54:55,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:54:55,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash 11918, now seen corresponding path program 1 times [2023-11-29 05:54:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:55,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941442212] [2023-11-29 05:54:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:55,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941442212] [2023-11-29 05:54:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941442212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:54:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971094217] [2023-11-29 05:54:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:55,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:55,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:55,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2023-11-29 05:54:55,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:55,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2023-11-29 05:54:55,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:55,427 INFO L124 PetriNetUnfolderBase]: 612/1107 cut-off events. [2023-11-29 05:54:55,427 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 05:54:55,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 1107 events. 612/1107 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6103 event pairs, 388 based on Foata normal form. 73/834 useless extension candidates. Maximal degree in co-relation 2001. Up to 853 conditions per place. [2023-11-29 05:54:55,437 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 23 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-29 05:54:55,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 154 flow [2023-11-29 05:54:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-29 05:54:55,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2023-11-29 05:54:55,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-29 05:54:55,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-29 05:54:55,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:55,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-29 05:54:55,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,443 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 110 flow. Second operand 3 states and 119 transitions. [2023-11-29 05:54:55,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 154 flow [2023-11-29 05:54:55,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:55,445 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 107 flow [2023-11-29 05:54:55,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-29 05:54:55,446 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-11-29 05:54:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 107 flow [2023-11-29 05:54:55,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:55,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:54:55,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:54:55,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:55,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash 355381527, now seen corresponding path program 1 times [2023-11-29 05:54:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:55,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783248744] [2023-11-29 05:54:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783248744] [2023-11-29 05:54:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783248744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:55,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:54:55,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638041171] [2023-11-29 05:54:55,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:55,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:55,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:55,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2023-11-29 05:54:55,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:55,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2023-11-29 05:54:55,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:55,705 INFO L124 PetriNetUnfolderBase]: 642/1132 cut-off events. [2023-11-29 05:54:55,705 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-29 05:54:55,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 1132 events. 642/1132 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6132 event pairs, 409 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 2074. Up to 901 conditions per place. [2023-11-29 05:54:55,715 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 25 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-29 05:54:55,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 155 flow [2023-11-29 05:54:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-29 05:54:55,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6497175141242938 [2023-11-29 05:54:55,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-29 05:54:55,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-29 05:54:55,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:55,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-29 05:54:55,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,720 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 107 flow. Second operand 3 states and 115 transitions. [2023-11-29 05:54:55,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 155 flow [2023-11-29 05:54:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:55,722 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 104 flow [2023-11-29 05:54:55,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-29 05:54:55,723 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2023-11-29 05:54:55,723 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 104 flow [2023-11-29 05:54:55,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:55,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:54:55,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:54:55,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:55,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash 355381528, now seen corresponding path program 1 times [2023-11-29 05:54:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:55,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635376244] [2023-11-29 05:54:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:55,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635376244] [2023-11-29 05:54:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635376244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:55,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:55,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:54:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439490940] [2023-11-29 05:54:55,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:55,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2023-11-29 05:54:55,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:55,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:55,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2023-11-29 05:54:55,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:55,990 INFO L124 PetriNetUnfolderBase]: 612/1081 cut-off events. [2023-11-29 05:54:55,990 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 05:54:55,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1081 events. 612/1081 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5890 event pairs, 388 based on Foata normal form. 16/777 useless extension candidates. Maximal degree in co-relation 1975. Up to 853 conditions per place. [2023-11-29 05:54:56,000 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 23 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-29 05:54:56,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 148 flow [2023-11-29 05:54:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-29 05:54:56,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2023-11-29 05:54:56,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-29 05:54:56,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-29 05:54:56,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:56,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-29 05:54:56,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,005 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-29 05:54:56,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 148 flow [2023-11-29 05:54:56,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:56,008 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 101 flow [2023-11-29 05:54:56,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-29 05:54:56,009 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -11 predicate places. [2023-11-29 05:54:56,009 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 101 flow [2023-11-29 05:54:56,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:56,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:56,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:54:56,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:56,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:56,011 INFO L85 PathProgramCache]: Analyzing trace with hash 77047422, now seen corresponding path program 1 times [2023-11-29 05:54:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:56,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957028471] [2023-11-29 05:54:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:56,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:56,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957028471] [2023-11-29 05:54:56,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957028471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:56,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:56,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:54:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766120559] [2023-11-29 05:54:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:56,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:56,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 59 [2023-11-29 05:54:56,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:56,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 59 [2023-11-29 05:54:56,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:56,256 INFO L124 PetriNetUnfolderBase]: 709/1188 cut-off events. [2023-11-29 05:54:56,257 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 05:54:56,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1188 events. 709/1188 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6149 event pairs, 449 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 2217. Up to 988 conditions per place. [2023-11-29 05:54:56,267 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 25 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-29 05:54:56,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 149 flow [2023-11-29 05:54:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-29 05:54:56,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6497175141242938 [2023-11-29 05:54:56,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-29 05:54:56,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-29 05:54:56,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:56,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-29 05:54:56,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,271 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 101 flow. Second operand 3 states and 115 transitions. [2023-11-29 05:54:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 149 flow [2023-11-29 05:54:56,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:56,273 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 98 flow [2023-11-29 05:54:56,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-29 05:54:56,274 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -12 predicate places. [2023-11-29 05:54:56,274 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 98 flow [2023-11-29 05:54:56,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:56,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:56,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:54:56,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:56,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash 77047423, now seen corresponding path program 1 times [2023-11-29 05:54:56,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:56,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24337954] [2023-11-29 05:54:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:56,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:56,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24337954] [2023-11-29 05:54:56,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24337954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:56,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:56,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:54:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746025605] [2023-11-29 05:54:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:56,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 59 [2023-11-29 05:54:56,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:56,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 59 [2023-11-29 05:54:56,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:56,486 INFO L124 PetriNetUnfolderBase]: 612/1047 cut-off events. [2023-11-29 05:54:56,486 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 05:54:56,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 1047 events. 612/1047 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5483 event pairs, 388 based on Foata normal form. 38/799 useless extension candidates. Maximal degree in co-relation 1941. Up to 853 conditions per place. [2023-11-29 05:54:56,494 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 23 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-29 05:54:56,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 142 flow [2023-11-29 05:54:56,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-29 05:54:56,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2023-11-29 05:54:56,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-29 05:54:56,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-29 05:54:56,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:56,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-29 05:54:56,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,498 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 98 flow. Second operand 3 states and 119 transitions. [2023-11-29 05:54:56,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 142 flow [2023-11-29 05:54:56,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:56,500 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 95 flow [2023-11-29 05:54:56,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-11-29 05:54:56,501 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -13 predicate places. [2023-11-29 05:54:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 95 flow [2023-11-29 05:54:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:56,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:54:56,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:56,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1636525905, now seen corresponding path program 1 times [2023-11-29 05:54:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591325190] [2023-11-29 05:54:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:56,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:56,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591325190] [2023-11-29 05:54:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591325190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:56,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:56,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:54:56,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452027540] [2023-11-29 05:54:56,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:56,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:54:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:54:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:54:56,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2023-11-29 05:54:56,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:56,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2023-11-29 05:54:56,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:56,884 INFO L124 PetriNetUnfolderBase]: 849/1258 cut-off events. [2023-11-29 05:54:56,885 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:54:56,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2499 conditions, 1258 events. 849/1258 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5182 event pairs, 114 based on Foata normal form. 0/1017 useless extension candidates. Maximal degree in co-relation 2488. Up to 696 conditions per place. [2023-11-29 05:54:56,895 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 49 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2023-11-29 05:54:56,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 255 flow [2023-11-29 05:54:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:54:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:54:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2023-11-29 05:54:56,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7372881355932204 [2023-11-29 05:54:56,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 174 transitions. [2023-11-29 05:54:56,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 174 transitions. [2023-11-29 05:54:56,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:56,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 174 transitions. [2023-11-29 05:54:56,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,900 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 95 flow. Second operand 4 states and 174 transitions. [2023-11-29 05:54:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 255 flow [2023-11-29 05:54:56,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:56,903 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 115 flow [2023-11-29 05:54:56,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-29 05:54:56,904 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2023-11-29 05:54:56,904 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 115 flow [2023-11-29 05:54:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:56,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:56,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:56,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:54:56,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:56,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash -861036657, now seen corresponding path program 2 times [2023-11-29 05:54:56,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:56,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899002155] [2023-11-29 05:54:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:56,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899002155] [2023-11-29 05:54:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899002155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:57,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:57,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:54:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503989220] [2023-11-29 05:54:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:57,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:54:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:54:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:54:57,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2023-11-29 05:54:57,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:57,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:57,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2023-11-29 05:54:57,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:57,302 INFO L124 PetriNetUnfolderBase]: 886/1322 cut-off events. [2023-11-29 05:54:57,302 INFO L125 PetriNetUnfolderBase]: For 118/142 co-relation queries the response was YES. [2023-11-29 05:54:57,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1322 events. 886/1322 cut-off events. For 118/142 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5255 event pairs, 81 based on Foata normal form. 24/1198 useless extension candidates. Maximal degree in co-relation 2826. Up to 555 conditions per place. [2023-11-29 05:54:57,313 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 53 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2023-11-29 05:54:57,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 313 flow [2023-11-29 05:54:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:54:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:54:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2023-11-29 05:54:57,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7152542372881356 [2023-11-29 05:54:57,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 211 transitions. [2023-11-29 05:54:57,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 211 transitions. [2023-11-29 05:54:57,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:57,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 211 transitions. [2023-11-29 05:54:57,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:57,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:57,317 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:57,317 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 115 flow. Second operand 5 states and 211 transitions. [2023-11-29 05:54:57,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 313 flow [2023-11-29 05:54:57,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:57,320 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 168 flow [2023-11-29 05:54:57,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-29 05:54:57,321 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-11-29 05:54:57,321 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 168 flow [2023-11-29 05:54:57,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:57,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:57,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:57,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:54:57,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:57,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash 463128627, now seen corresponding path program 3 times [2023-11-29 05:54:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729240289] [2023-11-29 05:54:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729240289] [2023-11-29 05:54:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729240289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:57,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:57,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:54:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974793978] [2023-11-29 05:54:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:54:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:54:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:54:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2023-11-29 05:54:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:57,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2023-11-29 05:54:57,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:58,042 INFO L124 PetriNetUnfolderBase]: 2571/3876 cut-off events. [2023-11-29 05:54:58,042 INFO L125 PetriNetUnfolderBase]: For 1682/1726 co-relation queries the response was YES. [2023-11-29 05:54:58,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9089 conditions, 3876 events. 2571/3876 cut-off events. For 1682/1726 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19686 event pairs, 350 based on Foata normal form. 100/3604 useless extension candidates. Maximal degree in co-relation 9070. Up to 1251 conditions per place. [2023-11-29 05:54:58,065 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 46 selfloop transitions, 3 changer transitions 66/130 dead transitions. [2023-11-29 05:54:58,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 130 transitions, 634 flow [2023-11-29 05:54:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:54:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:54:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2023-11-29 05:54:58,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7723970944309927 [2023-11-29 05:54:58,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 319 transitions. [2023-11-29 05:54:58,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 319 transitions. [2023-11-29 05:54:58,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:58,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 319 transitions. [2023-11-29 05:54:58,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.57142857142857) internal successors, (319), 7 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,070 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 168 flow. Second operand 7 states and 319 transitions. [2023-11-29 05:54:58,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 130 transitions, 634 flow [2023-11-29 05:54:58,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 130 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:54:58,077 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 203 flow [2023-11-29 05:54:58,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-11-29 05:54:58,078 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-11-29 05:54:58,079 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 203 flow [2023-11-29 05:54:58,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:58,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:58,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:54:58,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:58,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1371842917, now seen corresponding path program 1 times [2023-11-29 05:54:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:58,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209878347] [2023-11-29 05:54:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:58,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:58,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:58,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209878347] [2023-11-29 05:54:58,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209878347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:58,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:58,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:54:58,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772715952] [2023-11-29 05:54:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:58,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:58,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:54:58,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:58,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:54:58,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:58,492 INFO L124 PetriNetUnfolderBase]: 1450/2297 cut-off events. [2023-11-29 05:54:58,492 INFO L125 PetriNetUnfolderBase]: For 2856/3077 co-relation queries the response was YES. [2023-11-29 05:54:58,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5980 conditions, 2297 events. 1450/2297 cut-off events. For 2856/3077 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11683 event pairs, 469 based on Foata normal form. 171/2103 useless extension candidates. Maximal degree in co-relation 5954. Up to 1194 conditions per place. [2023-11-29 05:54:58,512 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 48 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-29 05:54:58,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 379 flow [2023-11-29 05:54:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-29 05:54:58,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8192090395480226 [2023-11-29 05:54:58,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-29 05:54:58,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-29 05:54:58,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:58,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-29 05:54:58,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,515 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 203 flow. Second operand 3 states and 145 transitions. [2023-11-29 05:54:58,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 379 flow [2023-11-29 05:54:58,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 367 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:54:58,528 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 208 flow [2023-11-29 05:54:58,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-11-29 05:54:58,529 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2023-11-29 05:54:58,529 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 208 flow [2023-11-29 05:54:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:58,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:58,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:54:58,530 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:58,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1341957369, now seen corresponding path program 1 times [2023-11-29 05:54:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:58,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115728474] [2023-11-29 05:54:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:58,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:58,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115728474] [2023-11-29 05:54:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115728474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:54:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413760813] [2023-11-29 05:54:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:58,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:54:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:54:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:54:58,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:54:58,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:58,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:54:58,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:58,970 INFO L124 PetriNetUnfolderBase]: 1958/3128 cut-off events. [2023-11-29 05:54:58,970 INFO L125 PetriNetUnfolderBase]: For 3030/3161 co-relation queries the response was YES. [2023-11-29 05:54:58,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8154 conditions, 3128 events. 1958/3128 cut-off events. For 3030/3161 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16741 event pairs, 615 based on Foata normal form. 167/2809 useless extension candidates. Maximal degree in co-relation 8128. Up to 1829 conditions per place. [2023-11-29 05:54:58,993 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 47 selfloop transitions, 2 changer transitions 1/72 dead transitions. [2023-11-29 05:54:58,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 387 flow [2023-11-29 05:54:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:54:58,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:54:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-29 05:54:58,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.807909604519774 [2023-11-29 05:54:58,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-29 05:54:58,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-29 05:54:58,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:58,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-29 05:54:58,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,997 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 208 flow. Second operand 3 states and 143 transitions. [2023-11-29 05:54:58,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 387 flow [2023-11-29 05:54:59,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:54:59,004 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 220 flow [2023-11-29 05:54:59,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-11-29 05:54:59,005 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-11-29 05:54:59,005 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 220 flow [2023-11-29 05:54:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:59,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:59,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:54:59,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:54:59,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1094246055, now seen corresponding path program 1 times [2023-11-29 05:54:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439623864] [2023-11-29 05:54:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439623864] [2023-11-29 05:54:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439623864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:54:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255404639] [2023-11-29 05:54:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:59,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:54:59,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:54:59,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:54:59,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:54:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:59,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:54:59,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:54:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:54:59,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:54:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:54:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255404639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:54:59,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:54:59,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-11-29 05:54:59,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687858647] [2023-11-29 05:54:59,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:54:59,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:54:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:54:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:54:59,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-29 05:54:59,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:59,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-29 05:54:59,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:01,361 INFO L124 PetriNetUnfolderBase]: 8930/13003 cut-off events. [2023-11-29 05:55:01,361 INFO L125 PetriNetUnfolderBase]: For 15929/15929 co-relation queries the response was YES. [2023-11-29 05:55:01,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37141 conditions, 13003 events. 8930/13003 cut-off events. For 15929/15929 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 72385 event pairs, 313 based on Foata normal form. 596/12095 useless extension candidates. Maximal degree in co-relation 37113. Up to 1776 conditions per place. [2023-11-29 05:55:01,465 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 133 selfloop transitions, 25 changer transitions 154/324 dead transitions. [2023-11-29 05:55:01,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 324 transitions, 2012 flow [2023-11-29 05:55:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:55:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 05:55:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 908 transitions. [2023-11-29 05:55:01,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.699537750385208 [2023-11-29 05:55:01,470 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 908 transitions. [2023-11-29 05:55:01,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 908 transitions. [2023-11-29 05:55:01,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:01,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 908 transitions. [2023-11-29 05:55:01,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 41.27272727272727) internal successors, (908), 22 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:01,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 59.0) internal successors, (1357), 23 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:01,479 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 59.0) internal successors, (1357), 23 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:01,479 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 220 flow. Second operand 22 states and 908 transitions. [2023-11-29 05:55:01,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 324 transitions, 2012 flow [2023-11-29 05:55:01,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 324 transitions, 1998 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:55:01,507 INFO L231 Difference]: Finished difference. Result has 107 places, 69 transitions, 548 flow [2023-11-29 05:55:01,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=548, PETRI_PLACES=107, PETRI_TRANSITIONS=69} [2023-11-29 05:55:01,508 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2023-11-29 05:55:01,509 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 69 transitions, 548 flow [2023-11-29 05:55:01,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:01,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:01,509 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:01,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:55:01,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:01,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:55:01,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1039215887, now seen corresponding path program 2 times [2023-11-29 05:55:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:01,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313655249] [2023-11-29 05:55:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:01,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:55:01,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:01,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313655249] [2023-11-29 05:55:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313655249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72890920] [2023-11-29 05:55:01,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:55:01,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:01,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:01,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:55:01,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:55:01,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:55:01,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:55:01,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:55:02,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:55:02,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72890920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:02,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:02,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2023-11-29 05:55:02,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587107561] [2023-11-29 05:55:02,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:02,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:55:02,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:55:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:55:02,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:55:02,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 69 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:02,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:02,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:55:02,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:03,262 INFO L124 PetriNetUnfolderBase]: 6362/10005 cut-off events. [2023-11-29 05:55:03,262 INFO L125 PetriNetUnfolderBase]: For 105902/106480 co-relation queries the response was YES. [2023-11-29 05:55:03,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42337 conditions, 10005 events. 6362/10005 cut-off events. For 105902/106480 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 62121 event pairs, 2348 based on Foata normal form. 407/8792 useless extension candidates. Maximal degree in co-relation 42289. Up to 3532 conditions per place. [2023-11-29 05:55:03,397 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 93 selfloop transitions, 11 changer transitions 1/131 dead transitions. [2023-11-29 05:55:03,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1245 flow [2023-11-29 05:55:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:55:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:55:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2023-11-29 05:55:03,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.847457627118644 [2023-11-29 05:55:03,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 200 transitions. [2023-11-29 05:55:03,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 200 transitions. [2023-11-29 05:55:03,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:03,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 200 transitions. [2023-11-29 05:55:03,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:03,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:03,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:03,401 INFO L175 Difference]: Start difference. First operand has 107 places, 69 transitions, 548 flow. Second operand 4 states and 200 transitions. [2023-11-29 05:55:03,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1245 flow [2023-11-29 05:55:03,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1087 flow, removed 74 selfloop flow, removed 10 redundant places. [2023-11-29 05:55:03,530 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 608 flow [2023-11-29 05:55:03,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=608, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2023-11-29 05:55:03,531 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2023-11-29 05:55:03,531 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 608 flow [2023-11-29 05:55:03,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:03,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:03,531 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:03,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:55:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:03,732 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:55:03,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1942134631, now seen corresponding path program 1 times [2023-11-29 05:55:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027962355] [2023-11-29 05:55:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:55:03,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:03,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027962355] [2023-11-29 05:55:03,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027962355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:03,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100610887] [2023-11-29 05:55:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:03,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:03,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:03,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:55:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:03,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:55:03,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:55:03,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:55:04,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100610887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:04,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:04,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2023-11-29 05:55:04,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714828779] [2023-11-29 05:55:04,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:55:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:55:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:55:04,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:55:04,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 608 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:04,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:04,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:55:04,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:06,154 INFO L124 PetriNetUnfolderBase]: 12955/20327 cut-off events. [2023-11-29 05:55:06,154 INFO L125 PetriNetUnfolderBase]: For 142956/143941 co-relation queries the response was YES. [2023-11-29 05:55:06,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81358 conditions, 20327 events. 12955/20327 cut-off events. For 142956/143941 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 139835 event pairs, 4628 based on Foata normal form. 747/17934 useless extension candidates. Maximal degree in co-relation 81315. Up to 7079 conditions per place. [2023-11-29 05:55:06,300 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 111 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2023-11-29 05:55:06,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 152 transitions, 1525 flow [2023-11-29 05:55:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:55:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:55:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2023-11-29 05:55:06,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8305084745762712 [2023-11-29 05:55:06,301 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 196 transitions. [2023-11-29 05:55:06,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 196 transitions. [2023-11-29 05:55:06,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:06,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 196 transitions. [2023-11-29 05:55:06,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:06,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:06,304 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:06,304 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 608 flow. Second operand 4 states and 196 transitions. [2023-11-29 05:55:06,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 152 transitions, 1525 flow [2023-11-29 05:55:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 1451 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-11-29 05:55:06,820 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 788 flow [2023-11-29 05:55:06,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=788, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-11-29 05:55:06,821 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2023-11-29 05:55:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 788 flow [2023-11-29 05:55:06,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:06,821 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:06,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:55:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:07,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:55:07,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 277622715, now seen corresponding path program 3 times [2023-11-29 05:55:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445556333] [2023-11-29 05:55:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:55:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445556333] [2023-11-29 05:55:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445556333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917272830] [2023-11-29 05:55:07,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:55:07,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:07,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:07,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:07,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:55:07,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 05:55:07,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:55:07,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:55:07,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:55:07,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:55:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917272830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:07,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2023-11-29 05:55:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252556984] [2023-11-29 05:55:07,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:55:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:55:07,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:55:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-29 05:55:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 788 flow. Second operand has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:07,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:07,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-29 05:55:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:16,145 INFO L124 PetriNetUnfolderBase]: 46484/67377 cut-off events. [2023-11-29 05:55:16,145 INFO L125 PetriNetUnfolderBase]: For 469383/469383 co-relation queries the response was YES. [2023-11-29 05:55:16,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281088 conditions, 67377 events. 46484/67377 cut-off events. For 469383/469383 co-relation queries the response was YES. Maximal size of possible extension queue 2140. Compared 452067 event pairs, 2164 based on Foata normal form. 2496/61804 useless extension candidates. Maximal degree in co-relation 281043. Up to 14987 conditions per place. [2023-11-29 05:55:16,517 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 176 selfloop transitions, 91 changer transitions 439/718 dead transitions. [2023-11-29 05:55:16,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 718 transitions, 8403 flow [2023-11-29 05:55:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 05:55:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 05:55:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1534 transitions. [2023-11-29 05:55:16,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-29 05:55:16,524 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1534 transitions. [2023-11-29 05:55:16,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1534 transitions. [2023-11-29 05:55:16,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:16,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1534 transitions. [2023-11-29 05:55:16,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 41.45945945945946) internal successors, (1534), 37 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:16,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 59.0) internal successors, (2242), 38 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:16,537 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 59.0) internal successors, (2242), 38 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:16,537 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 788 flow. Second operand 37 states and 1534 transitions. [2023-11-29 05:55:16,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 718 transitions, 8403 flow [2023-11-29 05:55:16,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 718 transitions, 8219 flow, removed 92 selfloop flow, removed 0 redundant places. [2023-11-29 05:55:16,987 INFO L231 Difference]: Finished difference. Result has 158 places, 149 transitions, 2334 flow [2023-11-29 05:55:16,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2334, PETRI_PLACES=158, PETRI_TRANSITIONS=149} [2023-11-29 05:55:16,988 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2023-11-29 05:55:16,988 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 149 transitions, 2334 flow [2023-11-29 05:55:16,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:16,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:16,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:16,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:55:17,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:17,189 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:55:17,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:17,189 INFO L85 PathProgramCache]: Analyzing trace with hash 447995321, now seen corresponding path program 4 times [2023-11-29 05:55:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:17,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251379863] [2023-11-29 05:55:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:55:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:17,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251379863] [2023-11-29 05:55:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251379863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:17,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394802852] [2023-11-29 05:55:17,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:55:17,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:17,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:17,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:17,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:55:17,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:55:17,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:55:17,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:55:17,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:55:17,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:55:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394802852] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:17,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2023-11-29 05:55:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397872633] [2023-11-29 05:55:17,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:55:17,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:55:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:55:17,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:55:17,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 149 transitions, 2334 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:17,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:17,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:55:17,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:24,425 INFO L124 PetriNetUnfolderBase]: 26371/41461 cut-off events. [2023-11-29 05:55:24,425 INFO L125 PetriNetUnfolderBase]: For 1042424/1044365 co-relation queries the response was YES. [2023-11-29 05:55:24,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241424 conditions, 41461 events. 26371/41461 cut-off events. For 1042424/1044365 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 304909 event pairs, 9095 based on Foata normal form. 951/36198 useless extension candidates. Maximal degree in co-relation 241348. Up to 11445 conditions per place. [2023-11-29 05:55:24,867 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 223 selfloop transitions, 67 changer transitions 0/320 dead transitions. [2023-11-29 05:55:24,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 320 transitions, 5772 flow [2023-11-29 05:55:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:55:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:55:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 255 transitions. [2023-11-29 05:55:24,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.864406779661017 [2023-11-29 05:55:24,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 255 transitions. [2023-11-29 05:55:24,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 255 transitions. [2023-11-29 05:55:24,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:24,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 255 transitions. [2023-11-29 05:55:24,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:24,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:24,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:24,870 INFO L175 Difference]: Start difference. First operand has 158 places, 149 transitions, 2334 flow. Second operand 5 states and 255 transitions. [2023-11-29 05:55:24,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 320 transitions, 5772 flow [2023-11-29 05:55:28,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 320 transitions, 4660 flow, removed 542 selfloop flow, removed 26 redundant places. [2023-11-29 05:55:28,687 INFO L231 Difference]: Finished difference. Result has 115 places, 186 transitions, 2763 flow [2023-11-29 05:55:28,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2763, PETRI_PLACES=115, PETRI_TRANSITIONS=186} [2023-11-29 05:55:28,688 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 54 predicate places. [2023-11-29 05:55:28,688 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 186 transitions, 2763 flow [2023-11-29 05:55:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:28,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:28,688 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:28,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:55:28,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:55:28,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:55:28,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash -630449651, now seen corresponding path program 2 times [2023-11-29 05:55:28,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:28,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754686392] [2023-11-29 05:55:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:28,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:55:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754686392] [2023-11-29 05:55:28,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754686392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314866355] [2023-11-29 05:55:28,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:55:28,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:28,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:28,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:28,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:55:29,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:55:29,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:55:29,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:55:29,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:55:29,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:55:29,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314866355] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:29,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:29,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2023-11-29 05:55:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442676371] [2023-11-29 05:55:29,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:55:29,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:55:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:55:29,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:55:29,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 186 transitions, 2763 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:29,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:29,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:55:29,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:40,434 INFO L124 PetriNetUnfolderBase]: 50020/78427 cut-off events. [2023-11-29 05:55:40,434 INFO L125 PetriNetUnfolderBase]: For 969829/972938 co-relation queries the response was YES. [2023-11-29 05:55:40,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373651 conditions, 78427 events. 50020/78427 cut-off events. For 969829/972938 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 630835 event pairs, 16605 based on Foata normal form. 1675/68358 useless extension candidates. Maximal degree in co-relation 373594. Up to 22218 conditions per place. [2023-11-29 05:55:41,298 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 327 selfloop transitions, 61 changer transitions 0/418 dead transitions. [2023-11-29 05:55:41,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 418 transitions, 7381 flow [2023-11-29 05:55:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:55:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:55:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2023-11-29 05:55:41,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8440677966101695 [2023-11-29 05:55:41,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 249 transitions. [2023-11-29 05:55:41,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 249 transitions. [2023-11-29 05:55:41,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:41,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 249 transitions. [2023-11-29 05:55:41,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:41,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:41,301 INFO L175 Difference]: Start difference. First operand has 115 places, 186 transitions, 2763 flow. Second operand 5 states and 249 transitions. [2023-11-29 05:55:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 418 transitions, 7381 flow [2023-11-29 05:55:42,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 418 transitions, 6965 flow, removed 208 selfloop flow, removed 0 redundant places. [2023-11-29 05:55:42,552 INFO L231 Difference]: Finished difference. Result has 121 places, 217 transitions, 3457 flow [2023-11-29 05:55:42,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3457, PETRI_PLACES=121, PETRI_TRANSITIONS=217} [2023-11-29 05:55:42,553 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 60 predicate places. [2023-11-29 05:55:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 217 transitions, 3457 flow [2023-11-29 05:55:42,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:42,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:42,554 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:42,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:55:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:42,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:55:42,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash -501769313, now seen corresponding path program 5 times [2023-11-29 05:55:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494193690] [2023-11-29 05:55:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:55:42,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:42,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494193690] [2023-11-29 05:55:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494193690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960264305] [2023-11-29 05:55:42,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:55:42,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:55:42,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:55:42,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:55:42,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:55:43,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 05:55:43,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:55:43,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:55:43,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:55:43,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:55:43,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960264305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:55:43,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:55:43,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 11 [2023-11-29 05:55:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420188810] [2023-11-29 05:55:43,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:55:43,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:55:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:55:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:55:43,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2023-11-29 05:55:43,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 217 transitions, 3457 flow. Second operand has 12 states, 12 states have (on average 34.25) internal successors, (411), 12 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:43,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:43,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2023-11-29 05:55:43,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:11,684 INFO L124 PetriNetUnfolderBase]: 121717/180427 cut-off events. [2023-11-29 05:56:11,684 INFO L125 PetriNetUnfolderBase]: For 2339603/2342384 co-relation queries the response was YES. [2023-11-29 05:56:12,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899278 conditions, 180427 events. 121717/180427 cut-off events. For 2339603/2342384 co-relation queries the response was YES. Maximal size of possible extension queue 4595. Compared 1403877 event pairs, 7935 based on Foata normal form. 4727/162679 useless extension candidates. Maximal degree in co-relation 899217. Up to 36473 conditions per place. [2023-11-29 05:56:13,232 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 206 selfloop transitions, 297 changer transitions 424/947 dead transitions. [2023-11-29 05:56:13,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 947 transitions, 17303 flow [2023-11-29 05:56:13,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 05:56:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 05:56:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1279 transitions. [2023-11-29 05:56:13,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7225988700564971 [2023-11-29 05:56:13,237 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1279 transitions. [2023-11-29 05:56:13,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1279 transitions. [2023-11-29 05:56:13,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:13,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1279 transitions. [2023-11-29 05:56:13,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 42.63333333333333) internal successors, (1279), 30 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:13,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 59.0) internal successors, (1829), 31 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:13,245 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 59.0) internal successors, (1829), 31 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:13,245 INFO L175 Difference]: Start difference. First operand has 121 places, 217 transitions, 3457 flow. Second operand 30 states and 1279 transitions. [2023-11-29 05:56:13,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 947 transitions, 17303 flow [2023-11-29 05:56:15,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 947 transitions, 16743 flow, removed 280 selfloop flow, removed 0 redundant places. [2023-11-29 05:56:15,873 INFO L231 Difference]: Finished difference. Result has 170 places, 374 transitions, 8141 flow [2023-11-29 05:56:15,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8141, PETRI_PLACES=170, PETRI_TRANSITIONS=374} [2023-11-29 05:56:15,874 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 109 predicate places. [2023-11-29 05:56:15,874 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 374 transitions, 8141 flow [2023-11-29 05:56:15,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.25) internal successors, (411), 12 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:15,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:56:15,875 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:15,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:56:16,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:56:16,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:56:16,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:16,076 INFO L85 PathProgramCache]: Analyzing trace with hash -458206569, now seen corresponding path program 6 times [2023-11-29 05:56:16,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:56:16,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762267296] [2023-11-29 05:56:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:56:16,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:56:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:56:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:56:16,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:56:16,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762267296] [2023-11-29 05:56:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762267296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:56:16,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878206937] [2023-11-29 05:56:16,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:56:16,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:56:16,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:56:16,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:56:16,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:56:16,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-11-29 05:56:16,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:56:16,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:56:16,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:56:16,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:56:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:56:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878206937] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:56:16,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:56:16,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 6 [2023-11-29 05:56:16,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409637086] [2023-11-29 05:56:16,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:56:16,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:56:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:56:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:56:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:56:16,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:56:16,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 374 transitions, 8141 flow. Second operand has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:16,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:56:16,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:56:16,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:47,505 INFO L124 PetriNetUnfolderBase]: 91414/143589 cut-off events. [2023-11-29 05:56:47,505 INFO L125 PetriNetUnfolderBase]: For 4229530/4235340 co-relation queries the response was YES. [2023-11-29 05:56:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867899 conditions, 143589 events. 91414/143589 cut-off events. For 4229530/4235340 co-relation queries the response was YES. Maximal size of possible extension queue 2869. Compared 1212549 event pairs, 26951 based on Foata normal form. 2247/124708 useless extension candidates. Maximal degree in co-relation 867816. Up to 33413 conditions per place. [2023-11-29 05:56:49,429 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 556 selfloop transitions, 200 changer transitions 0/795 dead transitions. [2023-11-29 05:56:49,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 795 transitions, 19288 flow [2023-11-29 05:56:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:56:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:56:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2023-11-29 05:56:49,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8757062146892656 [2023-11-29 05:56:49,430 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 310 transitions. [2023-11-29 05:56:49,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 310 transitions. [2023-11-29 05:56:49,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:49,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 310 transitions. [2023-11-29 05:56:49,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:49,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:49,432 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:56:49,433 INFO L175 Difference]: Start difference. First operand has 170 places, 374 transitions, 8141 flow. Second operand 6 states and 310 transitions. [2023-11-29 05:56:49,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 795 transitions, 19288 flow [2023-11-29 05:57:34,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 795 transitions, 15479 flow, removed 1740 selfloop flow, removed 17 redundant places. [2023-11-29 05:57:34,546 INFO L231 Difference]: Finished difference. Result has 147 places, 451 transitions, 9068 flow [2023-11-29 05:57:34,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=6626, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9068, PETRI_PLACES=147, PETRI_TRANSITIONS=451} [2023-11-29 05:57:34,547 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 86 predicate places. [2023-11-29 05:57:34,547 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 451 transitions, 9068 flow [2023-11-29 05:57:34,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:57:34,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:57:34,548 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:57:34,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:57:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:57:34,748 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:57:34,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:57:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash -487759607, now seen corresponding path program 3 times [2023-11-29 05:57:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:57:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681239244] [2023-11-29 05:57:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:57:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:57:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:57:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:57:34,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:57:34,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681239244] [2023-11-29 05:57:34,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681239244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:57:34,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665323359] [2023-11-29 05:57:34,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:57:34,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:57:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:57:34,885 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:57:34,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:57:35,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 05:57:35,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:57:35,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:57:35,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:57:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:57:35,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:57:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:57:35,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665323359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:57:35,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:57:35,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 6 [2023-11-29 05:57:35,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966970475] [2023-11-29 05:57:35,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:57:35,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:57:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:57:35,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:57:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:57:35,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 59 [2023-11-29 05:57:35,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 451 transitions, 9068 flow. Second operand has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:57:35,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:57:35,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 59 [2023-11-29 05:57:35,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:58:25,610 INFO L124 PetriNetUnfolderBase]: 155953/244357 cut-off events. [2023-11-29 05:58:25,610 INFO L125 PetriNetUnfolderBase]: For 4411421/4417842 co-relation queries the response was YES. [2023-11-29 05:58:27,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297011 conditions, 244357 events. 155953/244357 cut-off events. For 4411421/4417842 co-relation queries the response was YES. Maximal size of possible extension queue 5357. Compared 2206324 event pairs, 47157 based on Foata normal form. 3631/212166 useless extension candidates. Maximal degree in co-relation 1296938. Up to 59546 conditions per place. [2023-11-29 05:58:28,544 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 845 selfloop transitions, 199 changer transitions 0/1083 dead transitions. [2023-11-29 05:58:28,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1083 transitions, 25034 flow [2023-11-29 05:58:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:58:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:58:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2023-11-29 05:58:28,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8531073446327684 [2023-11-29 05:58:28,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 302 transitions. [2023-11-29 05:58:28,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 302 transitions. [2023-11-29 05:58:28,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:58:28,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 302 transitions. [2023-11-29 05:58:28,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:28,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:28,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:28,548 INFO L175 Difference]: Start difference. First operand has 147 places, 451 transitions, 9068 flow. Second operand 6 states and 302 transitions. [2023-11-29 05:58:28,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1083 transitions, 25034 flow [2023-11-29 05:58:47,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1083 transitions, 23291 flow, removed 848 selfloop flow, removed 1 redundant places. [2023-11-29 05:58:47,585 INFO L231 Difference]: Finished difference. Result has 155 places, 528 transitions, 10954 flow [2023-11-29 05:58:47,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=8589, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10954, PETRI_PLACES=155, PETRI_TRANSITIONS=528} [2023-11-29 05:58:47,586 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 94 predicate places. [2023-11-29 05:58:47,586 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 528 transitions, 10954 flow [2023-11-29 05:58:47,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:47,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:47,586 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:47,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:58:47,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:47,787 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 05:58:47,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash -654898923, now seen corresponding path program 7 times [2023-11-29 05:58:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:58:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933522014] [2023-11-29 05:58:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:58:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:58:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 47 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:58:47,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:58:47,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933522014] [2023-11-29 05:58:47,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933522014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:47,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384585741] [2023-11-29 05:58:47,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:58:47,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:58:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:58:47,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:58:47,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1ceda1-a33e-47cd-882f-606ef318e823/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:58:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:58:48,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:58:48,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:58:48,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 47 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:58:48,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384585741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:58:48,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:58:48,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 12 [2023-11-29 05:58:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502055137] [2023-11-29 05:58:48,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:58:48,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:58:48,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:58:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:58:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:58:48,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 59 [2023-11-29 05:58:48,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 528 transitions, 10954 flow. Second operand has 13 states, 13 states have (on average 34.38461538461539) internal successors, (447), 13 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:58:48,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:48,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 59 [2023-11-29 05:58:48,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand