./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:32:07,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:32:07,261 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:32:07,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:32:07,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:32:07,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:32:07,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:32:07,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:32:07,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:32:07,293 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:32:07,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:32:07,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:32:07,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:32:07,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:32:07,296 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:32:07,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:32:07,297 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:32:07,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:32:07,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:32:07,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:32:07,299 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:32:07,300 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:32:07,301 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:32:07,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:32:07,301 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:32:07,302 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:32:07,302 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:32:07,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:32:07,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:32:07,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:32:07,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:32:07,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:32:07,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:32:07,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:32:07,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:32:07,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:32:07,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:32:07,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:32:07,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:32:07,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:32:07,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:32:07,307 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_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2023-11-29 00:32:07,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:32:07,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:32:07,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:32:07,569 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:32:07,569 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:32:07,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-29 00:32:10,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:32:10,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:32:10,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-29 00:32:10,509 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data/726272e51/9f8386044c3e480ca0f7a40e3f6c6ee4/FLAG8d77ff14e [2023-11-29 00:32:10,521 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data/726272e51/9f8386044c3e480ca0f7a40e3f6c6ee4 [2023-11-29 00:32:10,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:32:10,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:32:10,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:32:10,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:32:10,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:32:10,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1563a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10, skipping insertion in model container [2023-11-29 00:32:10,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:32:10,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:32:10,853 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:32:10,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:32:10,920 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:32:10,920 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:32:10,926 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:32:10,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10 WrapperNode [2023-11-29 00:32:10,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:32:10,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:32:10,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:32:10,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:32:10,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,970 INFO L138 Inliner]: procedures = 175, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 121 [2023-11-29 00:32:10,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:32:10,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:32:10,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:32:10,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:32:10,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,996 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-29 00:32:10,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:10,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:11,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:11,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:11,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:11,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:11,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:32:11,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:32:11,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:32:11,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:32:11,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (1/1) ... [2023-11-29 00:32:11,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:32:11,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:11,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:32:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:32:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-11-29 00:32:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-11-29 00:32:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:32:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:32:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:32:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:32:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:32:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:32:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:32:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:32:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:32:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:32:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:32:11,074 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 00:32:11,197 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:32:11,199 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:32:11,366 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:32:11,474 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:32:11,474 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:32:11,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:32:11 BoogieIcfgContainer [2023-11-29 00:32:11,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:32:11,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:32:11,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:32:11,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:32:11,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:32:10" (1/3) ... [2023-11-29 00:32:11,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43878451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:32:11, skipping insertion in model container [2023-11-29 00:32:11,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:10" (2/3) ... [2023-11-29 00:32:11,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43878451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:32:11, skipping insertion in model container [2023-11-29 00:32:11,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:32:11" (3/3) ... [2023-11-29 00:32:11,484 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-11-29 00:32:11,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:32:11,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 00:32:11,501 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:32:11,535 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:32:11,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 100 flow [2023-11-29 00:32:11,598 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2023-11-29 00:32:11,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:32:11,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 6/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-11-29 00:32:11,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 48 transitions, 100 flow [2023-11-29 00:32:11,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 97 flow [2023-11-29 00:32:11,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:32:11,620 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;@103526f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:32:11,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 00:32:11,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:32:11,623 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:32:11,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:32:11,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:11,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:32:11,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:11,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash 10050, now seen corresponding path program 1 times [2023-11-29 00:32:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297243750] [2023-11-29 00:32:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:11,869 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 00:32:11,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:11,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297243750] [2023-11-29 00:32:11,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297243750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:11,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:11,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:32:11,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148125339] [2023-11-29 00:32:11,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:11,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:32:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:32:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:32:11,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2023-11-29 00:32:11,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 00:32:11,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:11,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2023-11-29 00:32:11,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:12,014 INFO L124 PetriNetUnfolderBase]: 77/228 cut-off events. [2023-11-29 00:32:12,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:32:12,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 228 events. 77/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1024 event pairs, 43 based on Foata normal form. 12/213 useless extension candidates. Maximal degree in co-relation 358. Up to 115 conditions per place. [2023-11-29 00:32:12,019 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-29 00:32:12,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 149 flow [2023-11-29 00:32:12,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:32:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:32:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-29 00:32:12,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-29 00:32:12,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-29 00:32:12,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-29 00:32:12,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:12,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-29 00:32:12,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:12,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,046 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 97 flow. Second operand 3 states and 100 transitions. [2023-11-29 00:32:12,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 149 flow [2023-11-29 00:32:12,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:32:12,052 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 92 flow [2023-11-29 00:32:12,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-29 00:32:12,057 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-11-29 00:32:12,057 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 92 flow [2023-11-29 00:32:12,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 00:32:12,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:12,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:32:12,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:32:12,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:12,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash 10051, now seen corresponding path program 1 times [2023-11-29 00:32:12,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:12,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446972542] [2023-11-29 00:32:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:12,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:12,161 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 00:32:12,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:12,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446972542] [2023-11-29 00:32:12,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446972542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:12,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:12,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:32:12,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922782301] [2023-11-29 00:32:12,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:12,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:32:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:32:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:32:12,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-29 00:32:12,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 00:32:12,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:12,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-29 00:32:12,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:12,246 INFO L124 PetriNetUnfolderBase]: 77/227 cut-off events. [2023-11-29 00:32:12,246 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:32:12,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 227 events. 77/227 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1031 event pairs, 43 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 364. Up to 114 conditions per place. [2023-11-29 00:32:12,250 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 22 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 00:32:12,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 148 flow [2023-11-29 00:32:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:32:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:32:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-29 00:32:12,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-29 00:32:12,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-29 00:32:12,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-29 00:32:12,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:12,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-29 00:32:12,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:12,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,256 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 92 flow. Second operand 3 states and 100 transitions. [2023-11-29 00:32:12,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 148 flow [2023-11-29 00:32:12,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:12,259 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 90 flow [2023-11-29 00:32:12,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-29 00:32:12,260 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-29 00:32:12,261 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 90 flow [2023-11-29 00:32:12,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 00:32:12,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:12,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:12,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:32:12,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:12,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1242398497, now seen corresponding path program 1 times [2023-11-29 00:32:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:12,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470735005] [2023-11-29 00:32:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:12,335 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 00:32:12,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470735005] [2023-11-29 00:32:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470735005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205813135] [2023-11-29 00:32:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:12,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:12,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-29 00:32:12,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:12,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-29 00:32:12,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:12,455 INFO L124 PetriNetUnfolderBase]: 111/324 cut-off events. [2023-11-29 00:32:12,456 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-29 00:32:12,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 324 events. 111/324 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1689 event pairs, 55 based on Foata normal form. 6/308 useless extension candidates. Maximal degree in co-relation 542. Up to 135 conditions per place. [2023-11-29 00:32:12,459 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 33 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-11-29 00:32:12,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 196 flow [2023-11-29 00:32:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-29 00:32:12,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2023-11-29 00:32:12,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-29 00:32:12,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-29 00:32:12,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:12,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-29 00:32:12,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,466 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 90 flow. Second operand 4 states and 137 transitions. [2023-11-29 00:32:12,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 196 flow [2023-11-29 00:32:12,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:12,468 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 107 flow [2023-11-29 00:32:12,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-29 00:32:12,469 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-29 00:32:12,470 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 107 flow [2023-11-29 00:32:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:12,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:12,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:32:12,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:12,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 84202757, now seen corresponding path program 1 times [2023-11-29 00:32:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:12,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262027153] [2023-11-29 00:32:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:12,604 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 00:32:12,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262027153] [2023-11-29 00:32:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262027153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:12,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367281452] [2023-11-29 00:32:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:12,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:12,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-29 00:32:12,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:12,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-29 00:32:12,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:12,719 INFO L124 PetriNetUnfolderBase]: 109/321 cut-off events. [2023-11-29 00:32:12,719 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-29 00:32:12,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 321 events. 109/321 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1661 event pairs, 65 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 564. Up to 156 conditions per place. [2023-11-29 00:32:12,722 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 20 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2023-11-29 00:32:12,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 167 flow [2023-11-29 00:32:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-29 00:32:12,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2023-11-29 00:32:12,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-29 00:32:12,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-29 00:32:12,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:12,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-29 00:32:12,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 00:32:12,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,727 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 107 flow. Second operand 4 states and 125 transitions. [2023-11-29 00:32:12,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 167 flow [2023-11-29 00:32:12,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:32:12,729 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 96 flow [2023-11-29 00:32:12,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-29 00:32:12,730 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-29 00:32:12,731 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 96 flow [2023-11-29 00:32:12,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:12,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:12,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:32:12,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:12,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash -145168152, now seen corresponding path program 1 times [2023-11-29 00:32:12,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:12,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355004243] [2023-11-29 00:32:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:12,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:12,824 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 00:32:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:12,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355004243] [2023-11-29 00:32:12,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355004243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:12,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:12,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:12,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238097375] [2023-11-29 00:32:12,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:12,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:32:12,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-29 00:32:12,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 00:32:12,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:12,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-29 00:32:12,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:12,962 INFO L124 PetriNetUnfolderBase]: 93/246 cut-off events. [2023-11-29 00:32:12,962 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-29 00:32:12,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 246 events. 93/246 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1040 event pairs, 39 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 460. Up to 92 conditions per place. [2023-11-29 00:32:12,964 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 28 selfloop transitions, 5 changer transitions 18/70 dead transitions. [2023-11-29 00:32:12,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 264 flow [2023-11-29 00:32:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:32:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:32:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2023-11-29 00:32:12,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2023-11-29 00:32:12,969 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 237 transitions. [2023-11-29 00:32:12,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 237 transitions. [2023-11-29 00:32:12,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:12,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 237 transitions. [2023-11-29 00:32:12,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:12,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 00:32:12,973 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 00:32:12,974 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 96 flow. Second operand 8 states and 237 transitions. [2023-11-29 00:32:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 264 flow [2023-11-29 00:32:12,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 254 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 00:32:12,977 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 125 flow [2023-11-29 00:32:12,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-11-29 00:32:12,978 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2023-11-29 00:32:12,978 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 125 flow [2023-11-29 00:32:12,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 00:32:12,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:12,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:12,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:32:12,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:12,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash 197164830, now seen corresponding path program 1 times [2023-11-29 00:32:12,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:12,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105929929] [2023-11-29 00:32:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:12,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:13,033 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 00:32:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105929929] [2023-11-29 00:32:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105929929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:13,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884493258] [2023-11-29 00:32:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:13,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-29 00:32:13,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 00:32:13,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:13,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-29 00:32:13,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:13,141 INFO L124 PetriNetUnfolderBase]: 96/283 cut-off events. [2023-11-29 00:32:13,141 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-29 00:32:13,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 283 events. 96/283 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1296 event pairs, 41 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 559. Up to 153 conditions per place. [2023-11-29 00:32:13,143 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 32 selfloop transitions, 1 changer transitions 9/62 dead transitions. [2023-11-29 00:32:13,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 262 flow [2023-11-29 00:32:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:13,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 00:32:13,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2023-11-29 00:32:13,145 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 00:32:13,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 00:32:13,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:13,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 00:32:13,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 00:32:13,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:13,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:13,147 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 125 flow. Second operand 4 states and 134 transitions. [2023-11-29 00:32:13,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 262 flow [2023-11-29 00:32:13,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 252 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 00:32:13,150 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 124 flow [2023-11-29 00:32:13,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=4, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-11-29 00:32:13,151 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-11-29 00:32:13,151 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 124 flow [2023-11-29 00:32:13,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 00:32:13,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:13,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:32:13,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:13,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1374226630, now seen corresponding path program 2 times [2023-11-29 00:32:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:13,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472814520] [2023-11-29 00:32:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:13,224 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 00:32:13,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472814520] [2023-11-29 00:32:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472814520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:13,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:13,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:32:13,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933954582] [2023-11-29 00:32:13,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:13,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:13,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:13,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-29 00:32:13,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-29 00:32:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:13,342 INFO L124 PetriNetUnfolderBase]: 114/326 cut-off events. [2023-11-29 00:32:13,342 INFO L125 PetriNetUnfolderBase]: For 61/64 co-relation queries the response was YES. [2023-11-29 00:32:13,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 326 events. 114/326 cut-off events. For 61/64 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1603 event pairs, 34 based on Foata normal form. 19/327 useless extension candidates. Maximal degree in co-relation 664. Up to 141 conditions per place. [2023-11-29 00:32:13,344 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 16 selfloop transitions, 2 changer transitions 38/74 dead transitions. [2023-11-29 00:32:13,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 317 flow [2023-11-29 00:32:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:32:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:32:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2023-11-29 00:32:13,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-29 00:32:13,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 170 transitions. [2023-11-29 00:32:13,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 170 transitions. [2023-11-29 00:32:13,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:13,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 170 transitions. [2023-11-29 00:32:13,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 00:32:13,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:13,348 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:13,348 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 124 flow. Second operand 5 states and 170 transitions. [2023-11-29 00:32:13,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 317 flow [2023-11-29 00:32:13,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 314 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:13,351 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 112 flow [2023-11-29 00:32:13,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2023-11-29 00:32:13,352 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2023-11-29 00:32:13,353 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 112 flow [2023-11-29 00:32:13,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:13,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:13,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:13,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:32:13,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:13,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:13,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1710501667, now seen corresponding path program 1 times [2023-11-29 00:32:13,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397318206] [2023-11-29 00:32:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:13,454 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 00:32:13,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:13,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397318206] [2023-11-29 00:32:13,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397318206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:13,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:13,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:32:13,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444386158] [2023-11-29 00:32:13,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:13,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:32:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:32:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:32:13,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:13,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 00:32:13,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:13,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:13,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:13,649 INFO L124 PetriNetUnfolderBase]: 94/314 cut-off events. [2023-11-29 00:32:13,649 INFO L125 PetriNetUnfolderBase]: For 99/101 co-relation queries the response was YES. [2023-11-29 00:32:13,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 314 events. 94/314 cut-off events. For 99/101 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1617 event pairs, 29 based on Foata normal form. 7/305 useless extension candidates. Maximal degree in co-relation 690. Up to 109 conditions per place. [2023-11-29 00:32:13,652 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 37 selfloop transitions, 6 changer transitions 19/78 dead transitions. [2023-11-29 00:32:13,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 364 flow [2023-11-29 00:32:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:32:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:32:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 304 transitions. [2023-11-29 00:32:13,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-29 00:32:13,655 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 304 transitions. [2023-11-29 00:32:13,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 304 transitions. [2023-11-29 00:32:13,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:13,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 304 transitions. [2023-11-29 00:32:13,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.636363636363637) internal successors, (304), 11 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 00:32:13,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 00:32:13,658 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 00:32:13,658 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 112 flow. Second operand 11 states and 304 transitions. [2023-11-29 00:32:13,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 364 flow [2023-11-29 00:32:13,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 336 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 00:32:13,662 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 157 flow [2023-11-29 00:32:13,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=157, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2023-11-29 00:32:13,663 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-29 00:32:13,663 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 157 flow [2023-11-29 00:32:13,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 00:32:13,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:13,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:13,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:32:13,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:13,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:13,665 INFO L85 PathProgramCache]: Analyzing trace with hash 880630481, now seen corresponding path program 2 times [2023-11-29 00:32:13,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:13,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5706538] [2023-11-29 00:32:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:32:13,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:32:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:32:13,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:32:13,710 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:32:13,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-29 00:32:13,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-29 00:32:13,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-29 00:32:13,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-29 00:32:13,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-29 00:32:13,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:32:13,714 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:32:13,719 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:32:13,719 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:32:13,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-29 00:32:13,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:32:13 BasicIcfg [2023-11-29 00:32:13,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:32:13,758 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:32:13,758 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:32:13,758 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:32:13,758 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:32:11" (3/4) ... [2023-11-29 00:32:13,761 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:32:13,762 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:32:13,762 INFO L158 Benchmark]: Toolchain (without parser) took 3237.43ms. Allocated memory is still 172.0MB. Free memory was 132.6MB in the beginning and 68.8MB in the end (delta: 63.8MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2023-11-29 00:32:13,763 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory was 88.5MB in the beginning and 88.5MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:32:13,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.33ms. Allocated memory is still 172.0MB. Free memory was 131.9MB in the beginning and 112.4MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:32:13,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.17ms. Allocated memory is still 172.0MB. Free memory was 111.7MB in the beginning and 109.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:32:13,764 INFO L158 Benchmark]: Boogie Preprocessor took 40.45ms. Allocated memory is still 172.0MB. Free memory was 109.6MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:32:13,765 INFO L158 Benchmark]: RCFGBuilder took 463.13ms. Allocated memory is still 172.0MB. Free memory was 107.4MB in the beginning and 80.9MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-29 00:32:13,765 INFO L158 Benchmark]: TraceAbstraction took 2279.33ms. Allocated memory is still 172.0MB. Free memory was 80.2MB in the beginning and 68.8MB in the end (delta: 11.4MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-11-29 00:32:13,765 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 172.0MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:32:13,768 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory was 88.5MB in the beginning and 88.5MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.33ms. Allocated memory is still 172.0MB. Free memory was 131.9MB in the beginning and 112.4MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.17ms. Allocated memory is still 172.0MB. Free memory was 111.7MB in the beginning and 109.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.45ms. Allocated memory is still 172.0MB. Free memory was 109.6MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.13ms. Allocated memory is still 172.0MB. Free memory was 107.4MB in the beginning and 80.9MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2279.33ms. Allocated memory is still 172.0MB. Free memory was 80.2MB in the beginning and 68.8MB in the end (delta: 11.4MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 172.0MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 683]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 683. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L712] EXPR 0 pendingIo = lp + 1 VAL [lp=1, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; VAL [\result=0, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=2, status=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 651 IncrementalHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 16 mSDtfsCounter, 651 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:32:13,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:32:15,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:32:15,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:32:15,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:32:15,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:32:15,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:32:15,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:32:15,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:32:15,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:32:15,728 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:32:15,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:32:15,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:32:15,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:32:15,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:32:15,731 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:32:15,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:32:15,732 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:32:15,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:32:15,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:32:15,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:32:15,734 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:32:15,734 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:32:15,734 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:32:15,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:32:15,735 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:32:15,736 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:32:15,736 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:32:15,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:32:15,737 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:32:15,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:32:15,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:32:15,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:32:15,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:32:15,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:32:15,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:32:15,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:32:15,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:32:15,740 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:32:15,740 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:32:15,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:32:15,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:32:15,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:32:15,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:32:15,741 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:32:15,741 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_56c15941-e5d2-406a-9c47-a5f89cfd20f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2023-11-29 00:32:16,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:32:16,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:32:16,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:32:16,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:32:16,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:32:16,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-29 00:32:18,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:32:19,128 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:32:19,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-29 00:32:19,146 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data/3a5e45f11/6d5532c44eab49a993ef6d59b30cde2a/FLAGe50c31161 [2023-11-29 00:32:19,404 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/data/3a5e45f11/6d5532c44eab49a993ef6d59b30cde2a [2023-11-29 00:32:19,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:32:19,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:32:19,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:32:19,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:32:19,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:32:19,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c3d811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19, skipping insertion in model container [2023-11-29 00:32:19,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:32:19,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:32:19,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:32:19,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:32:19,884 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:32:19,884 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:32:19,892 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:32:19,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19 WrapperNode [2023-11-29 00:32:19,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:32:19,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:32:19,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:32:19,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:32:19,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,941 INFO L138 Inliner]: procedures = 178, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 119 [2023-11-29 00:32:19,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:32:19,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:32:19,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:32:19,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:32:19,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,970 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-29 00:32:19,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:32:19,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:32:19,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:32:19,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:32:19,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (1/1) ... [2023-11-29 00:32:19,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:32:20,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:20,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:32:20,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:32:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-11-29 00:32:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-11-29 00:32:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:32:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:32:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:32:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:32:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:32:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:32:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:32:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:32:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:32:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:32:20,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:32:20,060 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 00:32:20,200 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:32:20,202 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:32:20,396 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:32:20,531 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:32:20,531 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:32:20,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:32:20 BoogieIcfgContainer [2023-11-29 00:32:20,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:32:20,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:32:20,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:32:20,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:32:20,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:32:19" (1/3) ... [2023-11-29 00:32:20,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d97e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:32:20, skipping insertion in model container [2023-11-29 00:32:20,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:32:19" (2/3) ... [2023-11-29 00:32:20,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d97e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:32:20, skipping insertion in model container [2023-11-29 00:32:20,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:32:20" (3/3) ... [2023-11-29 00:32:20,540 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-11-29 00:32:20,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:32:20,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 00:32:20,559 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:32:20,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:32:20,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 100 flow [2023-11-29 00:32:20,652 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2023-11-29 00:32:20,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:32:20,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 6/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2023-11-29 00:32:20,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 48 transitions, 100 flow [2023-11-29 00:32:20,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 97 flow [2023-11-29 00:32:20,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:32:20,676 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;@c7b7dca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:32:20,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 00:32:20,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:32:20,679 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:32:20,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:32:20,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:20,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:32:20,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:20,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 9922, now seen corresponding path program 1 times [2023-11-29 00:32:20,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:20,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060878440] [2023-11-29 00:32:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:20,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:20,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:20,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:20,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:32:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:20,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:32:20,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:20,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:32:20,873 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 00:32:20,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:20,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060878440] [2023-11-29 00:32:20,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060878440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:20,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:20,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:32:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547334071] [2023-11-29 00:32:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:20,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:32:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:32:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:32:20,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2023-11-29 00:32:20,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 00:32:20,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:20,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2023-11-29 00:32:20,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:21,038 INFO L124 PetriNetUnfolderBase]: 77/228 cut-off events. [2023-11-29 00:32:21,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:32:21,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 228 events. 77/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1024 event pairs, 43 based on Foata normal form. 12/213 useless extension candidates. Maximal degree in co-relation 358. Up to 115 conditions per place. [2023-11-29 00:32:21,044 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 23 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-29 00:32:21,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 149 flow [2023-11-29 00:32:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:32:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:32:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-29 00:32:21,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-29 00:32:21,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-29 00:32:21,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-29 00:32:21,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:21,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-29 00:32:21,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:21,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:21,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:21,069 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 97 flow. Second operand 3 states and 100 transitions. [2023-11-29 00:32:21,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 149 flow [2023-11-29 00:32:21,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:32:21,075 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 92 flow [2023-11-29 00:32:21,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-29 00:32:21,080 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-11-29 00:32:21,081 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 92 flow [2023-11-29 00:32:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 00:32:21,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:21,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:32:21,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:21,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:21,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:21,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 9923, now seen corresponding path program 1 times [2023-11-29 00:32:21,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:21,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225949175] [2023-11-29 00:32:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:21,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:21,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:21,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:32:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:21,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:32:21,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:21,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:32:21,369 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 00:32:21,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:21,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225949175] [2023-11-29 00:32:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225949175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:21,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:32:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219718712] [2023-11-29 00:32:21,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:21,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:32:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:32:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:32:21,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-29 00:32:21,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 00:32:21,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:21,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-29 00:32:21,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:21,467 INFO L124 PetriNetUnfolderBase]: 77/227 cut-off events. [2023-11-29 00:32:21,467 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:32:21,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 227 events. 77/227 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1031 event pairs, 43 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 364. Up to 114 conditions per place. [2023-11-29 00:32:21,470 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 22 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 00:32:21,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 148 flow [2023-11-29 00:32:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:32:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:32:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-29 00:32:21,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-29 00:32:21,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-29 00:32:21,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-29 00:32:21,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:21,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-29 00:32:21,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:21,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:21,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:21,483 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 92 flow. Second operand 3 states and 100 transitions. [2023-11-29 00:32:21,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 148 flow [2023-11-29 00:32:21,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:21,487 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 90 flow [2023-11-29 00:32:21,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-11-29 00:32:21,488 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-29 00:32:21,488 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 90 flow [2023-11-29 00:32:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 00:32:21,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:21,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:21,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:32:21,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:21,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:21,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2126167523, now seen corresponding path program 1 times [2023-11-29 00:32:21,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:21,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172020551] [2023-11-29 00:32:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:21,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:21,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:21,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:21,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:32:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:21,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:32:21,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:21,772 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 00:32:21,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:21,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172020551] [2023-11-29 00:32:21,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172020551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:21,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:32:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915116863] [2023-11-29 00:32:21,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:21,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:21,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:21,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-29 00:32:21,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:21,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:21,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-29 00:32:21,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:21,929 INFO L124 PetriNetUnfolderBase]: 109/315 cut-off events. [2023-11-29 00:32:21,929 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 00:32:21,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 315 events. 109/315 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1532 event pairs, 50 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 516. Up to 149 conditions per place. [2023-11-29 00:32:21,933 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-29 00:32:21,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 220 flow [2023-11-29 00:32:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:32:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:32:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2023-11-29 00:32:21,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 00:32:21,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 160 transitions. [2023-11-29 00:32:21,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 160 transitions. [2023-11-29 00:32:21,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:21,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 160 transitions. [2023-11-29 00:32:21,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 00:32:21,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:21,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:21,940 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 90 flow. Second operand 5 states and 160 transitions. [2023-11-29 00:32:21,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 220 flow [2023-11-29 00:32:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:21,943 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 134 flow [2023-11-29 00:32:21,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-11-29 00:32:21,944 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-29 00:32:21,945 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 134 flow [2023-11-29 00:32:21,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:21,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:21,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:21,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:22,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:22,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -706254948, now seen corresponding path program 1 times [2023-11-29 00:32:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607002626] [2023-11-29 00:32:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:22,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:22,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:22,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:22,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:32:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:22,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:32:22,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:22,245 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 00:32:22,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:22,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607002626] [2023-11-29 00:32:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607002626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851424596] [2023-11-29 00:32:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:22,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2023-11-29 00:32:22,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2023-11-29 00:32:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:22,398 INFO L124 PetriNetUnfolderBase]: 125/360 cut-off events. [2023-11-29 00:32:22,398 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-29 00:32:22,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 360 events. 125/360 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1889 event pairs, 54 based on Foata normal form. 6/341 useless extension candidates. Maximal degree in co-relation 638. Up to 158 conditions per place. [2023-11-29 00:32:22,401 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 34 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-29 00:32:22,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 238 flow [2023-11-29 00:32:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-29 00:32:22,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2023-11-29 00:32:22,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-29 00:32:22,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-29 00:32:22,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:22,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-29 00:32:22,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,407 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,407 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 134 flow. Second operand 4 states and 137 transitions. [2023-11-29 00:32:22,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 238 flow [2023-11-29 00:32:22,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:32:22,411 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 148 flow [2023-11-29 00:32:22,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-11-29 00:32:22,412 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2023-11-29 00:32:22,412 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 148 flow [2023-11-29 00:32:22,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:22,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:22,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:22,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:22,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:22,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash -194511898, now seen corresponding path program 1 times [2023-11-29 00:32:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:22,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318036724] [2023-11-29 00:32:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:22,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:22,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:22,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:32:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:22,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:22,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:22,728 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 00:32:22,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:22,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318036724] [2023-11-29 00:32:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318036724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:22,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:22,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134401459] [2023-11-29 00:32:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:22,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:32:22,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-29 00:32:22,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 00:32:22,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:22,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-29 00:32:22,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:22,889 INFO L124 PetriNetUnfolderBase]: 152/411 cut-off events. [2023-11-29 00:32:22,890 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-29 00:32:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 411 events. 152/411 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2210 event pairs, 69 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 800. Up to 241 conditions per place. [2023-11-29 00:32:22,894 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 39 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2023-11-29 00:32:22,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 302 flow [2023-11-29 00:32:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:32:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:32:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2023-11-29 00:32:22,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2023-11-29 00:32:22,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 159 transitions. [2023-11-29 00:32:22,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 159 transitions. [2023-11-29 00:32:22,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:22,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 159 transitions. [2023-11-29 00:32:22,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 00:32:22,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:22,898 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 148 flow. Second operand 5 states and 159 transitions. [2023-11-29 00:32:22,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 302 flow [2023-11-29 00:32:22,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 296 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 00:32:22,903 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 212 flow [2023-11-29 00:32:22,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-11-29 00:32:22,903 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-29 00:32:22,904 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 212 flow [2023-11-29 00:32:22,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 00:32:22,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:22,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:22,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:32:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:23,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:23,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1184602904, now seen corresponding path program 1 times [2023-11-29 00:32:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137499646] [2023-11-29 00:32:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:23,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:23,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:23,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:23,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:32:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:23,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:32:23,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:23,206 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 00:32:23,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:23,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137499646] [2023-11-29 00:32:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137499646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:23,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:23,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855537059] [2023-11-29 00:32:23,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:23,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:23,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:23,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:23,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:32:23,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2023-11-29 00:32:23,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 00:32:23,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:23,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2023-11-29 00:32:23,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:23,393 INFO L124 PetriNetUnfolderBase]: 149/407 cut-off events. [2023-11-29 00:32:23,393 INFO L125 PetriNetUnfolderBase]: For 230/235 co-relation queries the response was YES. [2023-11-29 00:32:23,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 407 events. 149/407 cut-off events. For 230/235 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2108 event pairs, 60 based on Foata normal form. 9/400 useless extension candidates. Maximal degree in co-relation 943. Up to 179 conditions per place. [2023-11-29 00:32:23,397 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 50 selfloop transitions, 9 changer transitions 1/86 dead transitions. [2023-11-29 00:32:23,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 440 flow [2023-11-29 00:32:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:32:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:32:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2023-11-29 00:32:23,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-29 00:32:23,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 217 transitions. [2023-11-29 00:32:23,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 217 transitions. [2023-11-29 00:32:23,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:23,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 217 transitions. [2023-11-29 00:32:23,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 00:32:23,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 00:32:23,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 00:32:23,401 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 212 flow. Second operand 7 states and 217 transitions. [2023-11-29 00:32:23,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 440 flow [2023-11-29 00:32:23,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:32:23,406 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 264 flow [2023-11-29 00:32:23,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-29 00:32:23,407 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-11-29 00:32:23,408 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 264 flow [2023-11-29 00:32:23,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 00:32:23,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:23,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:23,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:32:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:23,612 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:23,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1734915089, now seen corresponding path program 1 times [2023-11-29 00:32:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:23,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696697429] [2023-11-29 00:32:23,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:23,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:23,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:23,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:23,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:32:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:23,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:23,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:23,795 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_41| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_41| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_41|)))) is different from true [2023-11-29 00:32:23,796 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 00:32:23,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:23,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696697429] [2023-11-29 00:32:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696697429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:23,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:23,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:23,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704106782] [2023-11-29 00:32:23,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:23,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:23,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:23,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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 00:32:23,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:23,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:23,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:23,890 INFO L124 PetriNetUnfolderBase]: 145/412 cut-off events. [2023-11-29 00:32:23,890 INFO L125 PetriNetUnfolderBase]: For 232/233 co-relation queries the response was YES. [2023-11-29 00:32:23,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 412 events. 145/412 cut-off events. For 232/233 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2210 event pairs, 60 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 972. Up to 188 conditions per place. [2023-11-29 00:32:23,893 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 33 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2023-11-29 00:32:23,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 378 flow [2023-11-29 00:32:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:23,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:23,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:23,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:23,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:23,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:23,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:23,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:23,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:23,896 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 264 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 378 flow [2023-11-29 00:32:23,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:32:23,912 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 324 flow [2023-11-29 00:32:23,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-11-29 00:32:23,913 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2023-11-29 00:32:23,913 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 324 flow [2023-11-29 00:32:23,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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 00:32:23,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:23,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:23,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 00:32:24,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:24,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:24,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:24,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2052207740, now seen corresponding path program 1 times [2023-11-29 00:32:24,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:24,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567510394] [2023-11-29 00:32:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:24,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:24,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:24,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:24,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:32:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:24,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:24,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:24,284 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_42|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_42| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:24,291 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 00:32:24,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:24,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567510394] [2023-11-29 00:32:24,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567510394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:24,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031942102] [2023-11-29 00:32:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:24,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:24,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:24,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:24,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:24,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:24,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:24,395 INFO L124 PetriNetUnfolderBase]: 143/408 cut-off events. [2023-11-29 00:32:24,395 INFO L125 PetriNetUnfolderBase]: For 471/478 co-relation queries the response was YES. [2023-11-29 00:32:24,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 408 events. 143/408 cut-off events. For 471/478 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2171 event pairs, 60 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 1150. Up to 188 conditions per place. [2023-11-29 00:32:24,398 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 34 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-11-29 00:32:24,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 448 flow [2023-11-29 00:32:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:24,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:24,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:24,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:24,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:24,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:24,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:24,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:24,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:24,401 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 324 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:24,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 448 flow [2023-11-29 00:32:24,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 434 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:24,405 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 361 flow [2023-11-29 00:32:24,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-11-29 00:32:24,406 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2023-11-29 00:32:24,407 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 361 flow [2023-11-29 00:32:24,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 00:32:24,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:24,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:24,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 00:32:24,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:24,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:24,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash 263148276, now seen corresponding path program 1 times [2023-11-29 00:32:24,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:24,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143470955] [2023-11-29 00:32:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:24,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:24,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:24,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 00:32:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:24,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:24,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:24,797 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_43| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_43| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_43|) (_ bv0 1)))) is different from true [2023-11-29 00:32:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:32:24,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:24,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143470955] [2023-11-29 00:32:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143470955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:24,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:24,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:24,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435036228] [2023-11-29 00:32:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:24,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:24,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:24,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:24,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:24,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:32:24,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:24,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:24,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:24,911 INFO L124 PetriNetUnfolderBase]: 147/422 cut-off events. [2023-11-29 00:32:24,912 INFO L125 PetriNetUnfolderBase]: For 614/621 co-relation queries the response was YES. [2023-11-29 00:32:24,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 422 events. 147/422 cut-off events. For 614/621 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2264 event pairs, 62 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1249. Up to 188 conditions per place. [2023-11-29 00:32:24,916 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 36 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-29 00:32:24,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 491 flow [2023-11-29 00:32:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:24,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:24,918 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:24,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:24,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:24,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:24,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:24,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:24,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:24,920 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 361 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:24,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 491 flow [2023-11-29 00:32:24,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 476 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:24,925 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 397 flow [2023-11-29 00:32:24,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-29 00:32:24,927 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2023-11-29 00:32:24,927 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 397 flow [2023-11-29 00:32:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:32:24,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:24,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:24,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 00:32:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:25,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:25,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1969633012, now seen corresponding path program 1 times [2023-11-29 00:32:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819662762] [2023-11-29 00:32:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:25,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:25,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:25,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 00:32:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:25,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:25,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:25,290 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_44| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-29 00:32:25,296 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 00:32:25,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:25,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819662762] [2023-11-29 00:32:25,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819662762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:25,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:25,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333643867] [2023-11-29 00:32:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:25,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:25,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:25,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:25,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 00:32:25,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:25,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:25,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:25,390 INFO L124 PetriNetUnfolderBase]: 149/426 cut-off events. [2023-11-29 00:32:25,390 INFO L125 PetriNetUnfolderBase]: For 800/811 co-relation queries the response was YES. [2023-11-29 00:32:25,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 426 events. 149/426 cut-off events. For 800/811 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2280 event pairs, 60 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 1348. Up to 188 conditions per place. [2023-11-29 00:32:25,394 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 38 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2023-11-29 00:32:25,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 535 flow [2023-11-29 00:32:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:25,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:25,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:25,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:25,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:25,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:25,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:25,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:25,397 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:25,397 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 397 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:25,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 535 flow [2023-11-29 00:32:25,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:25,402 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 437 flow [2023-11-29 00:32:25,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=437, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-29 00:32:25,403 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2023-11-29 00:32:25,403 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 437 flow [2023-11-29 00:32:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 00:32:25,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:25,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:25,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 00:32:25,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:25,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:25,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash -806068818, now seen corresponding path program 2 times [2023-11-29 00:32:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137293947] [2023-11-29 00:32:25,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:25,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:25,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:25,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:25,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 00:32:25,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:25,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:25,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:25,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:25,762 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_45| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_45|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_45| (_ bv0 1))))) is different from true [2023-11-29 00:32:25,776 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 00:32:25,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:25,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137293947] [2023-11-29 00:32:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137293947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:25,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436917307] [2023-11-29 00:32:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:25,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:25,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 00:32:25,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:25,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:25,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:25,875 INFO L124 PetriNetUnfolderBase]: 147/422 cut-off events. [2023-11-29 00:32:25,875 INFO L125 PetriNetUnfolderBase]: For 986/997 co-relation queries the response was YES. [2023-11-29 00:32:25,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 422 events. 147/422 cut-off events. For 986/997 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2247 event pairs, 60 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 1413. Up to 188 conditions per place. [2023-11-29 00:32:25,878 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 38 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2023-11-29 00:32:25,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 585 flow [2023-11-29 00:32:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:25,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:25,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:25,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:25,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:25,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:25,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:25,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:25,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:25,881 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 437 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:25,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 585 flow [2023-11-29 00:32:25,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:25,888 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 487 flow [2023-11-29 00:32:25,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-11-29 00:32:25,888 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2023-11-29 00:32:25,888 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 487 flow [2023-11-29 00:32:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 00:32:25,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:25,889 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] [2023-11-29 00:32:25,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:32:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:26,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:26,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 929081941, now seen corresponding path program 1 times [2023-11-29 00:32:26,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812117397] [2023-11-29 00:32:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:26,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:26,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:26,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 00:32:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:26,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:26,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:26,253 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_46| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_46| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_46|)))) is different from true [2023-11-29 00:32:26,266 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 00:32:26,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:26,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812117397] [2023-11-29 00:32:26,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812117397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:26,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:26,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:26,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298673048] [2023-11-29 00:32:26,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:26,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:26,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:32:26,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:26,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:26,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:26,369 INFO L124 PetriNetUnfolderBase]: 151/436 cut-off events. [2023-11-29 00:32:26,369 INFO L125 PetriNetUnfolderBase]: For 1235/1246 co-relation queries the response was YES. [2023-11-29 00:32:26,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1565 conditions, 436 events. 151/436 cut-off events. For 1235/1246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2359 event pairs, 60 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 1530. Up to 188 conditions per place. [2023-11-29 00:32:26,374 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 40 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2023-11-29 00:32:26,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 643 flow [2023-11-29 00:32:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:26,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:26,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:26,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:26,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:26,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:26,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:26,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:26,378 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:26,378 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 487 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:26,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 643 flow [2023-11-29 00:32:26,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 618 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:26,385 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 529 flow [2023-11-29 00:32:26,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-11-29 00:32:26,386 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2023-11-29 00:32:26,386 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 529 flow [2023-11-29 00:32:26,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:32:26,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:26,386 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] [2023-11-29 00:32:26,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:32:26,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:26,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:26,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash 781671131, now seen corresponding path program 2 times [2023-11-29 00:32:26,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:26,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968920216] [2023-11-29 00:32:26,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:26,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:26,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:26,591 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:26,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 00:32:26,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:26,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:26,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:26,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:26,748 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_47| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_47|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_47| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:26,769 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 00:32:26,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:26,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:26,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968920216] [2023-11-29 00:32:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968920216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:26,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:26,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:26,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659549736] [2023-11-29 00:32:26,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:26,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:26,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:26,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:26,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:32:26,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:26,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:26,882 INFO L124 PetriNetUnfolderBase]: 149/432 cut-off events. [2023-11-29 00:32:26,882 INFO L125 PetriNetUnfolderBase]: For 1479/1482 co-relation queries the response was YES. [2023-11-29 00:32:26,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 432 events. 149/432 cut-off events. For 1479/1482 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2339 event pairs, 60 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 1558. Up to 188 conditions per place. [2023-11-29 00:32:26,887 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 37 selfloop transitions, 17 changer transitions 2/85 dead transitions. [2023-11-29 00:32:26,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 691 flow [2023-11-29 00:32:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-29 00:32:26,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2023-11-29 00:32:26,889 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-29 00:32:26,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-29 00:32:26,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:26,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-29 00:32:26,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:32:26,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:26,891 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:26,891 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 529 flow. Second operand 4 states and 121 transitions. [2023-11-29 00:32:26,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 691 flow [2023-11-29 00:32:26,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:26,899 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 576 flow [2023-11-29 00:32:26,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=576, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-29 00:32:26,900 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2023-11-29 00:32:26,900 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 576 flow [2023-11-29 00:32:26,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 00:32:26,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:26,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:26,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 00:32:27,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:27,101 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:27,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1910688893, now seen corresponding path program 1 times [2023-11-29 00:32:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:27,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859720849] [2023-11-29 00:32:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:27,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:27,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:27,103 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:27,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:32:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:27,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:27,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:27,197 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 00:32:27,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:27,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:27,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859720849] [2023-11-29 00:32:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859720849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:27,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:32:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563260806] [2023-11-29 00:32:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:27,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:32:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:27,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 00:32:27,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:27,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:27,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:27,396 INFO L124 PetriNetUnfolderBase]: 263/655 cut-off events. [2023-11-29 00:32:27,396 INFO L125 PetriNetUnfolderBase]: For 3602/3635 co-relation queries the response was YES. [2023-11-29 00:32:27,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 655 events. 263/655 cut-off events. For 3602/3635 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3729 event pairs, 71 based on Foata normal form. 4/631 useless extension candidates. Maximal degree in co-relation 2623. Up to 357 conditions per place. [2023-11-29 00:32:27,401 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 78 selfloop transitions, 8 changer transitions 12/124 dead transitions. [2023-11-29 00:32:27,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 124 transitions, 1169 flow [2023-11-29 00:32:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:32:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:32:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2023-11-29 00:32:27,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2023-11-29 00:32:27,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 169 transitions. [2023-11-29 00:32:27,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 169 transitions. [2023-11-29 00:32:27,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:27,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 169 transitions. [2023-11-29 00:32:27,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 00:32:27,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:27,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:27,405 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 576 flow. Second operand 5 states and 169 transitions. [2023-11-29 00:32:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 124 transitions, 1169 flow [2023-11-29 00:32:27,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 1130 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:27,412 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 512 flow [2023-11-29 00:32:27,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-11-29 00:32:27,413 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2023-11-29 00:32:27,413 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 512 flow [2023-11-29 00:32:27,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 00:32:27,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:27,413 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] [2023-11-29 00:32:27,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 00:32:27,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:27,614 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:27,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash -201847540, now seen corresponding path program 1 times [2023-11-29 00:32:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586733107] [2023-11-29 00:32:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:27,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:27,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:27,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:27,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:32:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:27,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:27,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:27,783 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_48|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_48| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:27,795 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 00:32:27,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:27,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:27,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586733107] [2023-11-29 00:32:27,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586733107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:27,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:27,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:27,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574905953] [2023-11-29 00:32:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:27,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:27,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:27,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:27,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:27,927 INFO L124 PetriNetUnfolderBase]: 134/471 cut-off events. [2023-11-29 00:32:27,927 INFO L125 PetriNetUnfolderBase]: For 1925/1928 co-relation queries the response was YES. [2023-11-29 00:32:27,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 471 events. 134/471 cut-off events. For 1925/1928 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2841 event pairs, 67 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 1680. Up to 213 conditions per place. [2023-11-29 00:32:27,933 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 36 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2023-11-29 00:32:27,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 78 transitions, 614 flow [2023-11-29 00:32:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:27,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:27,935 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:27,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:27,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:27,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:27,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:27,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:27,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:27,937 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 512 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:27,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 78 transitions, 614 flow [2023-11-29 00:32:27,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 608 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 00:32:27,947 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 546 flow [2023-11-29 00:32:27,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2023-11-29 00:32:27,948 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2023-11-29 00:32:27,948 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 546 flow [2023-11-29 00:32:27,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:27,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:27,949 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] [2023-11-29 00:32:27,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:28,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:28,152 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:28,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 501336626, now seen corresponding path program 2 times [2023-11-29 00:32:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:28,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193586554] [2023-11-29 00:32:28,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:28,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:28,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:28,154 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:28,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:32:28,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:28,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:28,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:28,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:28,306 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_49| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_49| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_49|)))) is different from true [2023-11-29 00:32:28,343 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 00:32:28,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:28,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193586554] [2023-11-29 00:32:28,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193586554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:28,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:28,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576277337] [2023-11-29 00:32:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:28,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:28,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:28,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:28,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:28,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:28,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:28,453 INFO L124 PetriNetUnfolderBase]: 134/475 cut-off events. [2023-11-29 00:32:28,453 INFO L125 PetriNetUnfolderBase]: For 2550/2553 co-relation queries the response was YES. [2023-11-29 00:32:28,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 475 events. 134/475 cut-off events. For 2550/2553 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2880 event pairs, 67 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 1773. Up to 213 conditions per place. [2023-11-29 00:32:28,457 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 38 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-11-29 00:32:28,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 79 transitions, 654 flow [2023-11-29 00:32:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:28,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:28,459 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:28,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:28,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:28,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:28,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:28,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:28,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:28,461 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 546 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:28,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 79 transitions, 654 flow [2023-11-29 00:32:28,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 79 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:28,469 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 573 flow [2023-11-29 00:32:28,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=573, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2023-11-29 00:32:28,469 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2023-11-29 00:32:28,469 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 573 flow [2023-11-29 00:32:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:28,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:28,470 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] [2023-11-29 00:32:28,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:28,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:28,671 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:28,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash -384403950, now seen corresponding path program 1 times [2023-11-29 00:32:28,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:28,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457664026] [2023-11-29 00:32:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:28,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:28,673 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:28,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:32:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:28,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:28,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:28,813 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_50| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_50|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_50| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:28,844 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 00:32:28,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:28,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457664026] [2023-11-29 00:32:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457664026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:28,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303559893] [2023-11-29 00:32:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:28,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:28,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:28,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:28,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:28,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:28,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:28,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:28,948 INFO L124 PetriNetUnfolderBase]: 134/479 cut-off events. [2023-11-29 00:32:28,948 INFO L125 PetriNetUnfolderBase]: For 2999/3002 co-relation queries the response was YES. [2023-11-29 00:32:28,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 479 events. 134/479 cut-off events. For 2999/3002 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2915 event pairs, 67 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 1854. Up to 213 conditions per place. [2023-11-29 00:32:28,954 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 39 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-11-29 00:32:28,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 80 transitions, 687 flow [2023-11-29 00:32:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:28,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:28,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:28,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:28,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:28,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:28,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:28,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:28,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:28,958 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 573 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:28,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 80 transitions, 687 flow [2023-11-29 00:32:28,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 80 transitions, 668 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:28,968 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 597 flow [2023-11-29 00:32:28,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=597, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2023-11-29 00:32:28,969 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-11-29 00:32:28,969 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 597 flow [2023-11-29 00:32:28,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:28,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:28,969 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] [2023-11-29 00:32:28,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 00:32:29,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:29,170 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:29,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1133376502, now seen corresponding path program 2 times [2023-11-29 00:32:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:29,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177589096] [2023-11-29 00:32:29,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:29,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:29,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:29,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:32:29,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:29,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:29,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:29,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:29,324 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_51| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_51|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_51| (_ bv0 1))))) is different from true [2023-11-29 00:32:29,365 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 00:32:29,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:29,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177589096] [2023-11-29 00:32:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177589096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:29,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:29,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660349578] [2023-11-29 00:32:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:29,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:29,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:29,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:29,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:29,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:29,462 INFO L124 PetriNetUnfolderBase]: 132/475 cut-off events. [2023-11-29 00:32:29,462 INFO L125 PetriNetUnfolderBase]: For 3363/3366 co-relation queries the response was YES. [2023-11-29 00:32:29,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 475 events. 132/475 cut-off events. For 3363/3366 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2888 event pairs, 67 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 1864. Up to 213 conditions per place. [2023-11-29 00:32:29,466 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 39 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2023-11-29 00:32:29,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 80 transitions, 703 flow [2023-11-29 00:32:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-29 00:32:29,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2023-11-29 00:32:29,468 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-29 00:32:29,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-29 00:32:29,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:29,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-29 00:32:29,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 00:32:29,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:29,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:29,469 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 597 flow. Second operand 4 states and 114 transitions. [2023-11-29 00:32:29,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 80 transitions, 703 flow [2023-11-29 00:32:29,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 80 transitions, 686 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:29,478 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 621 flow [2023-11-29 00:32:29,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2023-11-29 00:32:29,478 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2023-11-29 00:32:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 621 flow [2023-11-29 00:32:29,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 00:32:29,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:29,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:29,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 00:32:29,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:29,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:29,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1139658930, now seen corresponding path program 1 times [2023-11-29 00:32:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528678600] [2023-11-29 00:32:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:29,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:29,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:29,681 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:29,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:32:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:29,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:32:29,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:29,761 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 00:32:29,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:29,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:29,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528678600] [2023-11-29 00:32:29,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528678600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:29,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:32:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819560518] [2023-11-29 00:32:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:32:29,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2023-11-29 00:32:29,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 621 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:29,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:29,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2023-11-29 00:32:29,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:29,900 INFO L124 PetriNetUnfolderBase]: 206/632 cut-off events. [2023-11-29 00:32:29,900 INFO L125 PetriNetUnfolderBase]: For 6042/6063 co-relation queries the response was YES. [2023-11-29 00:32:29,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 632 events. 206/632 cut-off events. For 6042/6063 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3994 event pairs, 43 based on Foata normal form. 27/649 useless extension candidates. Maximal degree in co-relation 2538. Up to 284 conditions per place. [2023-11-29 00:32:29,905 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 73 selfloop transitions, 3 changer transitions 13/119 dead transitions. [2023-11-29 00:32:29,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 1152 flow [2023-11-29 00:32:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:32:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:32:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2023-11-29 00:32:29,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2023-11-29 00:32:29,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 164 transitions. [2023-11-29 00:32:29,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 164 transitions. [2023-11-29 00:32:29,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:29,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 164 transitions. [2023-11-29 00:32:29,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 00:32:29,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:29,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:29,908 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 621 flow. Second operand 5 states and 164 transitions. [2023-11-29 00:32:29,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 1152 flow [2023-11-29 00:32:29,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 119 transitions, 1132 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:29,920 INFO L231 Difference]: Finished difference. Result has 103 places, 82 transitions, 641 flow [2023-11-29 00:32:29,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2023-11-29 00:32:29,920 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2023-11-29 00:32:29,920 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 641 flow [2023-11-29 00:32:29,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:29,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:29,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:29,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 00:32:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:30,121 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:30,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1088358541, now seen corresponding path program 1 times [2023-11-29 00:32:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:30,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219114713] [2023-11-29 00:32:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:30,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:30,123 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:30,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:32:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:30,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:30,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:30,306 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_52| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_52|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_52| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:30,323 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 00:32:30,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:30,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:30,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219114713] [2023-11-29 00:32:30,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219114713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:30,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726014373] [2023-11-29 00:32:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:30,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:30,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 82 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:30,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:30,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:30,443 INFO L124 PetriNetUnfolderBase]: 144/529 cut-off events. [2023-11-29 00:32:30,443 INFO L125 PetriNetUnfolderBase]: For 3817/3836 co-relation queries the response was YES. [2023-11-29 00:32:30,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 529 events. 144/529 cut-off events. For 3817/3836 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3403 event pairs, 67 based on Foata normal form. 18/529 useless extension candidates. Maximal degree in co-relation 2233. Up to 222 conditions per place. [2023-11-29 00:32:30,449 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 35 selfloop transitions, 10 changer transitions 6/82 dead transitions. [2023-11-29 00:32:30,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 82 transitions, 739 flow [2023-11-29 00:32:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:30,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:30,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:30,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:30,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:30,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:30,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,453 INFO L175 Difference]: Start difference. First operand has 103 places, 82 transitions, 641 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:30,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 82 transitions, 739 flow [2023-11-29 00:32:30,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 82 transitions, 724 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 00:32:30,466 INFO L231 Difference]: Finished difference. Result has 103 places, 76 transitions, 609 flow [2023-11-29 00:32:30,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=103, PETRI_TRANSITIONS=76} [2023-11-29 00:32:30,467 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2023-11-29 00:32:30,467 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 76 transitions, 609 flow [2023-11-29 00:32:30,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:30,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:30,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:30,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:30,668 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:30,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1767231813, now seen corresponding path program 2 times [2023-11-29 00:32:30,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:30,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111603752] [2023-11-29 00:32:30,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:30,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:30,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:30,670 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:30,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:32:30,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:30,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:30,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:30,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:30,806 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_53| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_53|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_53| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:30,845 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 00:32:30,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:30,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111603752] [2023-11-29 00:32:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111603752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:30,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43596895] [2023-11-29 00:32:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:30,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 76 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:30,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:30,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:30,954 INFO L124 PetriNetUnfolderBase]: 136/517 cut-off events. [2023-11-29 00:32:30,954 INFO L125 PetriNetUnfolderBase]: For 4509/4528 co-relation queries the response was YES. [2023-11-29 00:32:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 517 events. 136/517 cut-off events. For 4509/4528 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3318 event pairs, 67 based on Foata normal form. 18/517 useless extension candidates. Maximal degree in co-relation 2175. Up to 214 conditions per place. [2023-11-29 00:32:30,965 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 34 selfloop transitions, 9 changer transitions 3/76 dead transitions. [2023-11-29 00:32:30,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 76 transitions, 699 flow [2023-11-29 00:32:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:30,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:30,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:30,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:30,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:30,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:30,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,968 INFO L175 Difference]: Start difference. First operand has 103 places, 76 transitions, 609 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:30,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 76 transitions, 699 flow [2023-11-29 00:32:30,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 76 transitions, 666 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-29 00:32:30,978 INFO L231 Difference]: Finished difference. Result has 100 places, 73 transitions, 570 flow [2023-11-29 00:32:30,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=570, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2023-11-29 00:32:30,979 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2023-11-29 00:32:30,979 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 570 flow [2023-11-29 00:32:30,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:30,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:30,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:30,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:32:31,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:31,180 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:31,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 748190225, now seen corresponding path program 3 times [2023-11-29 00:32:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693988970] [2023-11-29 00:32:31,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:32:31,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:31,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:31,182 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:32:31,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:32:31,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:31,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:31,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:31,317 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_54| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_54| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_54|)))) is different from true [2023-11-29 00:32:31,358 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 00:32:31,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:31,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693988970] [2023-11-29 00:32:31,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693988970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:31,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:31,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608281410] [2023-11-29 00:32:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:31,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:31,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:31,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:31,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:31,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:31,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:31,440 INFO L124 PetriNetUnfolderBase]: 119/496 cut-off events. [2023-11-29 00:32:31,440 INFO L125 PetriNetUnfolderBase]: For 4122/4139 co-relation queries the response was YES. [2023-11-29 00:32:31,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 496 events. 119/496 cut-off events. For 4122/4139 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3229 event pairs, 67 based on Foata normal form. 16/496 useless extension candidates. Maximal degree in co-relation 2033. Up to 214 conditions per place. [2023-11-29 00:32:31,443 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 32 selfloop transitions, 6 changer transitions 5/73 dead transitions. [2023-11-29 00:32:31,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 73 transitions, 656 flow [2023-11-29 00:32:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:31,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:31,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:31,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:31,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:31,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:31,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,445 INFO L175 Difference]: Start difference. First operand has 100 places, 73 transitions, 570 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:31,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 73 transitions, 656 flow [2023-11-29 00:32:31,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 73 transitions, 608 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-29 00:32:31,453 INFO L231 Difference]: Finished difference. Result has 97 places, 68 transitions, 468 flow [2023-11-29 00:32:31,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=468, PETRI_PLACES=97, PETRI_TRANSITIONS=68} [2023-11-29 00:32:31,453 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2023-11-29 00:32:31,453 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 68 transitions, 468 flow [2023-11-29 00:32:31,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:31,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:31,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 00:32:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:31,654 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:31,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash -44978703, now seen corresponding path program 1 times [2023-11-29 00:32:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108218868] [2023-11-29 00:32:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:31,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:31,656 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:31,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:32:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:31,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:31,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:31,804 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_55| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_55|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_55| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:32:31,852 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 00:32:31,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:31,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:31,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108218868] [2023-11-29 00:32:31,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108218868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:31,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609082855] [2023-11-29 00:32:31,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:31,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:31,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:31,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:31,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 68 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:31,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:31,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:31,957 INFO L124 PetriNetUnfolderBase]: 108/458 cut-off events. [2023-11-29 00:32:31,957 INFO L125 PetriNetUnfolderBase]: For 3193/3206 co-relation queries the response was YES. [2023-11-29 00:32:31,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 458 events. 108/458 cut-off events. For 3193/3206 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2914 event pairs, 67 based on Foata normal form. 12/454 useless extension candidates. Maximal degree in co-relation 1757. Up to 214 conditions per place. [2023-11-29 00:32:31,961 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 29 selfloop transitions, 5 changer transitions 4/68 dead transitions. [2023-11-29 00:32:31,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 68 transitions, 544 flow [2023-11-29 00:32:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 00:32:31,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2023-11-29 00:32:31,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 00:32:31,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 00:32:31,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:31,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 00:32:31,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,964 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,964 INFO L175 Difference]: Start difference. First operand has 97 places, 68 transitions, 468 flow. Second operand 4 states and 118 transitions. [2023-11-29 00:32:31,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 68 transitions, 544 flow [2023-11-29 00:32:31,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 68 transitions, 501 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-29 00:32:31,974 INFO L231 Difference]: Finished difference. Result has 93 places, 64 transitions, 411 flow [2023-11-29 00:32:31,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=93, PETRI_TRANSITIONS=64} [2023-11-29 00:32:31,975 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2023-11-29 00:32:31,975 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 64 transitions, 411 flow [2023-11-29 00:32:31,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:31,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:31,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:31,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:32,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:32,176 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:32,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1746844971, now seen corresponding path program 2 times [2023-11-29 00:32:32,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:32,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927717329] [2023-11-29 00:32:32,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:32,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:32,177 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:32,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:32:32,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:32,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:32,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:32:32,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:32,301 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t~0#1.base_56| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_56| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t~0#1.base_56|)))) is different from true [2023-11-29 00:32:32,346 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 00:32:32,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:32,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927717329] [2023-11-29 00:32:32,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927717329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:32,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:32:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252817104] [2023-11-29 00:32:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:32,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:32:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:32:32,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-29 00:32:32,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:32,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 64 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:32,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:32,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:32,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:32,418 INFO L124 PetriNetUnfolderBase]: 105/428 cut-off events. [2023-11-29 00:32:32,418 INFO L125 PetriNetUnfolderBase]: For 2471/2480 co-relation queries the response was YES. [2023-11-29 00:32:32,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 428 events. 105/428 cut-off events. For 2471/2480 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2667 event pairs, 67 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 1581. Up to 214 conditions per place. [2023-11-29 00:32:32,421 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 17 selfloop transitions, 1 changer transitions 20/63 dead transitions. [2023-11-29 00:32:32,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 63 transitions, 463 flow [2023-11-29 00:32:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:32:32,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:32:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-29 00:32:32,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2023-11-29 00:32:32,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-29 00:32:32,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-29 00:32:32,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:32,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-29 00:32:32,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:32,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:32,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:32,423 INFO L175 Difference]: Start difference. First operand has 93 places, 64 transitions, 411 flow. Second operand 4 states and 113 transitions. [2023-11-29 00:32:32,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 63 transitions, 463 flow [2023-11-29 00:32:32,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 63 transitions, 419 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-29 00:32:32,431 INFO L231 Difference]: Finished difference. Result has 85 places, 43 transitions, 216 flow [2023-11-29 00:32:32,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=85, PETRI_TRANSITIONS=43} [2023-11-29 00:32:32,432 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2023-11-29 00:32:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 43 transitions, 216 flow [2023-11-29 00:32:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:32,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:32,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:32,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 00:32:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:32,633 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:32,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash -49682695, now seen corresponding path program 1 times [2023-11-29 00:32:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65551958] [2023-11-29 00:32:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:32,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:32,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:32,635 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:32:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:32,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:32:32,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:32,720 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 00:32:32,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:32:32,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:32:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65551958] [2023-11-29 00:32:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65551958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:32:32,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:32:32,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:32:32,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418172934] [2023-11-29 00:32:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:32:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:32:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:32:32,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:32:32,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 48 [2023-11-29 00:32:32,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 43 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 00:32:32,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:32:32,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 48 [2023-11-29 00:32:32,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:32:32,904 INFO L124 PetriNetUnfolderBase]: 94/302 cut-off events. [2023-11-29 00:32:32,904 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2023-11-29 00:32:32,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 302 events. 94/302 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 31 based on Foata normal form. 5/305 useless extension candidates. Maximal degree in co-relation 917. Up to 95 conditions per place. [2023-11-29 00:32:32,906 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 38 selfloop transitions, 6 changer transitions 23/85 dead transitions. [2023-11-29 00:32:32,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 570 flow [2023-11-29 00:32:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:32:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:32:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 307 transitions. [2023-11-29 00:32:32,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814393939393939 [2023-11-29 00:32:32,908 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 307 transitions. [2023-11-29 00:32:32,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 307 transitions. [2023-11-29 00:32:32,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:32:32,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 307 transitions. [2023-11-29 00:32:32,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 00:32:32,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 00:32:32,910 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 00:32:32,910 INFO L175 Difference]: Start difference. First operand has 85 places, 43 transitions, 216 flow. Second operand 11 states and 307 transitions. [2023-11-29 00:32:32,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 570 flow [2023-11-29 00:32:32,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 469 flow, removed 37 selfloop flow, removed 13 redundant places. [2023-11-29 00:32:32,914 INFO L231 Difference]: Finished difference. Result has 72 places, 40 transitions, 189 flow [2023-11-29 00:32:32,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=189, PETRI_PLACES=72, PETRI_TRANSITIONS=40} [2023-11-29 00:32:32,915 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-11-29 00:32:32,915 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 40 transitions, 189 flow [2023-11-29 00:32:32,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 00:32:32,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:32:32,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:32,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:32:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:33,116 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-29 00:32:33,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash 216070937, now seen corresponding path program 2 times [2023-11-29 00:32:33,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:32:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990649190] [2023-11-29 00:32:33,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:32:33,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:32:33,118 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:32:33,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:32:33,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:32:33,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-29 00:32:33,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:32:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:32:33,215 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 00:32:33,215 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:32:33,216 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-29 00:32:33,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-29 00:32:33,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-29 00:32:33,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-29 00:32:33,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-29 00:32:33,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 00:32:33,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:32:33,419 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:33,423 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:32:33,423 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:32:33,447 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-29 00:32:33,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:32:33 BasicIcfg [2023-11-29 00:32:33,458 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:32:33,459 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:32:33,459 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:32:33,459 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:32:33,459 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:32:20" (3/4) ... [2023-11-29 00:32:33,461 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:32:33,461 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:32:33,462 INFO L158 Benchmark]: Toolchain (without parser) took 14053.97ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 65.8MB in the beginning and 88.1MB in the end (delta: -22.3MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2023-11-29 00:32:33,462 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 37.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:32:33,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.17ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.3MB in the end (delta: 1.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-11-29 00:32:33,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.64ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 61.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:32:33,463 INFO L158 Benchmark]: Boogie Preprocessor took 44.80ms. Allocated memory is still 90.2MB. Free memory was 61.8MB in the beginning and 59.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:32:33,463 INFO L158 Benchmark]: RCFGBuilder took 543.82ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 54.0MB in the end (delta: 5.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-11-29 00:32:33,463 INFO L158 Benchmark]: TraceAbstraction took 12924.06ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 53.6MB in the beginning and 88.1MB in the end (delta: -34.6MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-11-29 00:32:33,464 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 159.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:32:33,465 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory is still 37.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.17ms. Allocated memory is still 90.2MB. Free memory was 65.8MB in the beginning and 64.3MB in the end (delta: 1.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.64ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 61.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.80ms. Allocated memory is still 90.2MB. Free memory was 61.8MB in the beginning and 59.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.82ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 54.0MB in the end (delta: 5.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12924.06ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 53.6MB in the beginning and 88.1MB in the end (delta: -34.6MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 159.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 683]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 683. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L712] EXPR 0 pendingIo = lp + 1 VAL [lp=1, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; VAL [\result=0, lsf=0, pendingIo=2, stopped=0, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=2, status=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=2, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.8s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 366 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 647 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1282 IncrementalHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 43 mSDtfsCounter, 1282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=641occurred in iteration=19, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 525 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 473 ConstructedInterpolants, 81 QuantifiedInterpolants, 5024 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:32:33,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c15941-e5d2-406a-9c47-a5f89cfd20f7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample