./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/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_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/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_149e9286-be23-40be-9e5c-9afe7229c890/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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:22:31,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:22:31,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:22:31,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:22:31,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:22:31,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:22:31,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:22:31,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:22:31,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:22:31,305 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:22:31,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:22:31,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:22:31,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:22:31,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:22:31,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:22:31,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:22:31,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:22:31,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:22:31,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:22:31,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:22:31,311 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:22:31,313 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:22:31,313 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:22:31,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:22:31,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:22:31,314 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:22:31,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:22:31,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:22:31,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:22:31,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:22:31,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:22:31,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:22:31,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:22:31,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:22:31,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:22:31,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:22:31,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:22:31,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:22:31,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:22:31,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:22:31,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:22:31,321 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_149e9286-be23-40be-9e5c-9afe7229c890/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2023-11-29 05:22:31,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:22:31,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:22:31,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:22:31,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:22:31,576 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:22:31,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/mult-comm.wvr.c [2023-11-29 05:22:34,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:22:34,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:22:34,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/sv-benchmarks/c/weaver/mult-comm.wvr.c [2023-11-29 05:22:34,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/data/9286d0847/0c71014de3254a66b7927fc1cfb1c840/FLAG5050bf6b6 [2023-11-29 05:22:34,629 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/data/9286d0847/0c71014de3254a66b7927fc1cfb1c840 [2023-11-29 05:22:34,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:22:34,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:22:34,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:22:34,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:22:34,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:22:34,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519f6d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34, skipping insertion in model container [2023-11-29 05:22:34,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:22:34,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:22:34,853 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:22:34,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:22:34,888 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:22:34,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34 WrapperNode [2023-11-29 05:22:34,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:22:34,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:22:34,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:22:34,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:22:34,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,925 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-29 05:22:34,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:22:34,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:22:34,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:22:34,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:22:34,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,956 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 05:22:34,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,971 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:22:34,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:22:34,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:22:34,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:22:34,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (1/1) ... [2023-11-29 05:22:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:22:34,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:35,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:22:35,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:22:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:22:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:22:35,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:22:35,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:22:35,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:22:35,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:22:35,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:22:35,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:22:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:22:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:22:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:22:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:22:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:22:35,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:22:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:22:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:22:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:22:35,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:22:35,042 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:22:35,152 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:22:35,154 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:22:35,332 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:22:35,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:22:35,460 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:22:35,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:22:35 BoogieIcfgContainer [2023-11-29 05:22:35,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:22:35,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:22:35,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:22:35,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:22:35,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:22:34" (1/3) ... [2023-11-29 05:22:35,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79978e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:22:35, skipping insertion in model container [2023-11-29 05:22:35,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:22:34" (2/3) ... [2023-11-29 05:22:35,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79978e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:22:35, skipping insertion in model container [2023-11-29 05:22:35,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:22:35" (3/3) ... [2023-11-29 05:22:35,469 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2023-11-29 05:22:35,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:22:35,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 05:22:35,484 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:22:35,522 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 05:22:35,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 80 flow [2023-11-29 05:22:35,572 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-29 05:22:35,572 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:22:35,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 2/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-29 05:22:35,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 80 flow [2023-11-29 05:22:35,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 72 flow [2023-11-29 05:22:35,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:22:35,591 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;@504ff56b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:22:35,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 05:22:35,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:22:35,593 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 05:22:35,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:22:35,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:35,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 05:22:35,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:35,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 7715, now seen corresponding path program 1 times [2023-11-29 05:22:35,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409760118] [2023-11-29 05:22:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:35,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:35,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409760118] [2023-11-29 05:22:35,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409760118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:35,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:35,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:22:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719387653] [2023-11-29 05:22:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:35,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:22:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:22:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:22:35,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 05:22:35,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:35,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:35,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 05:22:35,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:35,971 INFO L124 PetriNetUnfolderBase]: 55/118 cut-off events. [2023-11-29 05:22:35,971 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 05:22:35,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 118 events. 55/118 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 281 event pairs, 34 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 183. Up to 95 conditions per place. [2023-11-29 05:22:35,975 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 15 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-29 05:22:35,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 96 flow [2023-11-29 05:22:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:22:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:22:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-29 05:22:35,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2023-11-29 05:22:35,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-29 05:22:35,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-29 05:22:35,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:35,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-29 05:22:35,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:35,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:35,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:35,994 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 72 flow. Second operand 3 states and 58 transitions. [2023-11-29 05:22:35,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 96 flow [2023-11-29 05:22:35,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:22:35,999 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 58 flow [2023-11-29 05:22:36,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-11-29 05:22:36,003 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -6 predicate places. [2023-11-29 05:22:36,003 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 58 flow [2023-11-29 05:22:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:36,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 05:22:36,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:22:36,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:36,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:36,005 INFO L85 PathProgramCache]: Analyzing trace with hash 7716, now seen corresponding path program 1 times [2023-11-29 05:22:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924194726] [2023-11-29 05:22:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:36,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924194726] [2023-11-29 05:22:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924194726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:22:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867510542] [2023-11-29 05:22:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:22:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:22:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:22:36,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-29 05:22:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:36,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-29 05:22:36,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:36,198 INFO L124 PetriNetUnfolderBase]: 37/82 cut-off events. [2023-11-29 05:22:36,198 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-11-29 05:22:36,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 82 events. 37/82 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 177 event pairs, 22 based on Foata normal form. 10/69 useless extension candidates. Maximal degree in co-relation 151. Up to 67 conditions per place. [2023-11-29 05:22:36,200 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 13 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-29 05:22:36,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 82 flow [2023-11-29 05:22:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:22:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:22:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2023-11-29 05:22:36,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-29 05:22:36,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 61 transitions. [2023-11-29 05:22:36,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 61 transitions. [2023-11-29 05:22:36,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:36,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 61 transitions. [2023-11-29 05:22:36,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,206 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 58 flow. Second operand 3 states and 61 transitions. [2023-11-29 05:22:36,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 82 flow [2023-11-29 05:22:36,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:22:36,208 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 55 flow [2023-11-29 05:22:36,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-29 05:22:36,209 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2023-11-29 05:22:36,209 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 55 flow [2023-11-29 05:22:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:36,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:22:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:22:36,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:36,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 230027226, now seen corresponding path program 1 times [2023-11-29 05:22:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688101900] [2023-11-29 05:22:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:36,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:36,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:36,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688101900] [2023-11-29 05:22:36,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688101900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:36,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:36,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:22:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52004532] [2023-11-29 05:22:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:36,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:22:36,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:22:36,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:22:36,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 05:22:36,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:36,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 05:22:36,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:36,347 INFO L124 PetriNetUnfolderBase]: 43/88 cut-off events. [2023-11-29 05:22:36,347 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:22:36,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 88 events. 43/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 170 event pairs, 26 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 169. Up to 79 conditions per place. [2023-11-29 05:22:36,349 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 15 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-29 05:22:36,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 83 flow [2023-11-29 05:22:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:22:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:22:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2023-11-29 05:22:36,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-29 05:22:36,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 57 transitions. [2023-11-29 05:22:36,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 57 transitions. [2023-11-29 05:22:36,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:36,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 57 transitions. [2023-11-29 05:22:36,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,354 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 55 flow. Second operand 3 states and 57 transitions. [2023-11-29 05:22:36,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 83 flow [2023-11-29 05:22:36,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:22:36,355 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 52 flow [2023-11-29 05:22:36,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-11-29 05:22:36,356 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-11-29 05:22:36,357 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 52 flow [2023-11-29 05:22:36,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:36,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:22:36,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:22:36,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:36,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash 230027227, now seen corresponding path program 1 times [2023-11-29 05:22:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460130291] [2023-11-29 05:22:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:36,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:36,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460130291] [2023-11-29 05:22:36,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460130291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:36,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:36,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:22:36,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050185075] [2023-11-29 05:22:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:36,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:22:36,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:36,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:22:36,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:22:36,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-29 05:22:36,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:36,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-29 05:22:36,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:36,491 INFO L124 PetriNetUnfolderBase]: 37/76 cut-off events. [2023-11-29 05:22:36,492 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2023-11-29 05:22:36,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 76 events. 37/76 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 22 based on Foata normal form. 5/64 useless extension candidates. Maximal degree in co-relation 145. Up to 67 conditions per place. [2023-11-29 05:22:36,493 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 13 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-29 05:22:36,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 76 flow [2023-11-29 05:22:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:22:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:22:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2023-11-29 05:22:36,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-29 05:22:36,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 61 transitions. [2023-11-29 05:22:36,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 61 transitions. [2023-11-29 05:22:36,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:36,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 61 transitions. [2023-11-29 05:22:36,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,497 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 52 flow. Second operand 3 states and 61 transitions. [2023-11-29 05:22:36,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 76 flow [2023-11-29 05:22:36,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:22:36,499 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 49 flow [2023-11-29 05:22:36,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-11-29 05:22:36,500 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -9 predicate places. [2023-11-29 05:22:36,500 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 49 flow [2023-11-29 05:22:36,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:36,501 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 05:22:36,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:22:36,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:36,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -988761018, now seen corresponding path program 1 times [2023-11-29 05:22:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:36,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219425115] [2023-11-29 05:22:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:36,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:36,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219425115] [2023-11-29 05:22:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219425115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:36,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:36,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:22:36,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438110456] [2023-11-29 05:22:36,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:36,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:22:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:22:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:22:36,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:36,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:36,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:36,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:36,775 INFO L124 PetriNetUnfolderBase]: 68/137 cut-off events. [2023-11-29 05:22:36,776 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-11-29 05:22:36,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 137 events. 68/137 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 402 event pairs, 22 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 263. Up to 72 conditions per place. [2023-11-29 05:22:36,778 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 21 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2023-11-29 05:22:36,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 124 flow [2023-11-29 05:22:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:22:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:22:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-29 05:22:36,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-29 05:22:36,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-29 05:22:36,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-29 05:22:36,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:36,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-29 05:22:36,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 05:22:36,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,784 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 49 flow. Second operand 3 states and 77 transitions. [2023-11-29 05:22:36,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 124 flow [2023-11-29 05:22:36,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:22:36,786 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 67 flow [2023-11-29 05:22:36,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-29 05:22:36,787 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2023-11-29 05:22:36,787 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 67 flow [2023-11-29 05:22:36,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:36,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:36,788 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 05:22:36,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:22:36,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:36,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1967006692, now seen corresponding path program 1 times [2023-11-29 05:22:36,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:36,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056422796] [2023-11-29 05:22:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:36,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056422796] [2023-11-29 05:22:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056422796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:37,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542327433] [2023-11-29 05:22:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:37,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:37,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:37,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:22:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:37,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:22:37,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:37,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542327433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:37,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-11-29 05:22:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062751082] [2023-11-29 05:22:37,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:22:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:22:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:22:37,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:37,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 67 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:37,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:37,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:37,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:37,719 INFO L124 PetriNetUnfolderBase]: 70/149 cut-off events. [2023-11-29 05:22:37,719 INFO L125 PetriNetUnfolderBase]: For 21/22 co-relation queries the response was YES. [2023-11-29 05:22:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 149 events. 70/149 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 432 event pairs, 12 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 331. Up to 70 conditions per place. [2023-11-29 05:22:37,722 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 23 selfloop transitions, 5 changer transitions 12/46 dead transitions. [2023-11-29 05:22:37,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 210 flow [2023-11-29 05:22:37,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:22:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:22:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2023-11-29 05:22:37,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-29 05:22:37,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 143 transitions. [2023-11-29 05:22:37,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 143 transitions. [2023-11-29 05:22:37,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:37,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 143 transitions. [2023-11-29 05:22:37,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:37,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:37,728 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:37,728 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 67 flow. Second operand 6 states and 143 transitions. [2023-11-29 05:22:37,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 210 flow [2023-11-29 05:22:37,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 46 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:22:37,730 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 92 flow [2023-11-29 05:22:37,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-29 05:22:37,731 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-29 05:22:37,731 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 92 flow [2023-11-29 05:22:37,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:37,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:37,732 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 05:22:37,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 05:22:37,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:37,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:37,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1932164930, now seen corresponding path program 2 times [2023-11-29 05:22:37,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:37,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031156286] [2023-11-29 05:22:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:37,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031156286] [2023-11-29 05:22:38,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031156286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352439359] [2023-11-29 05:22:38,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:22:38,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:38,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:38,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:38,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:22:38,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:22:38,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:38,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:22:38,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:38,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352439359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:38,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-11-29 05:22:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447589362] [2023-11-29 05:22:38,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:22:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:22:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:22:38,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:38,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 92 flow. Second operand has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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 05:22:38,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:38,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:38,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:38,863 INFO L124 PetriNetUnfolderBase]: 113/233 cut-off events. [2023-11-29 05:22:38,863 INFO L125 PetriNetUnfolderBase]: For 88/94 co-relation queries the response was YES. [2023-11-29 05:22:38,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 233 events. 113/233 cut-off events. For 88/94 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 838 event pairs, 17 based on Foata normal form. 8/240 useless extension candidates. Maximal degree in co-relation 584. Up to 87 conditions per place. [2023-11-29 05:22:38,867 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 36 selfloop transitions, 17 changer transitions 9/68 dead transitions. [2023-11-29 05:22:38,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 347 flow [2023-11-29 05:22:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:22:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:22:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2023-11-29 05:22:38,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7090909090909091 [2023-11-29 05:22:38,870 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 234 transitions. [2023-11-29 05:22:38,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 234 transitions. [2023-11-29 05:22:38,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:38,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 234 transitions. [2023-11-29 05:22:38,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:38,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:38,874 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:38,874 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 92 flow. Second operand 10 states and 234 transitions. [2023-11-29 05:22:38,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 347 flow [2023-11-29 05:22:38,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 329 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-29 05:22:38,878 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 189 flow [2023-11-29 05:22:38,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=189, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-29 05:22:38,879 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-11-29 05:22:38,879 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 189 flow [2023-11-29 05:22:38,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.727272727272727) internal successors, (217), 11 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 05:22:38,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:38,879 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 05:22:38,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 05:22:39,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:39,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:39,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash 786380703, now seen corresponding path program 1 times [2023-11-29 05:22:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:39,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050324989] [2023-11-29 05:22:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:39,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050324989] [2023-11-29 05:22:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050324989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422704602] [2023-11-29 05:22:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:39,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:39,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:22:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:39,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:22:39,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:39,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:39,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422704602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:39,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:39,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2023-11-29 05:22:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431597814] [2023-11-29 05:22:39,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:22:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:22:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:22:39,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:39,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 189 flow. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:39,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:39,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:39,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:39,846 INFO L124 PetriNetUnfolderBase]: 117/251 cut-off events. [2023-11-29 05:22:39,846 INFO L125 PetriNetUnfolderBase]: For 233/235 co-relation queries the response was YES. [2023-11-29 05:22:39,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 251 events. 117/251 cut-off events. For 233/235 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 967 event pairs, 19 based on Foata normal form. 2/253 useless extension candidates. Maximal degree in co-relation 745. Up to 171 conditions per place. [2023-11-29 05:22:39,849 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 33 selfloop transitions, 6 changer transitions 12/57 dead transitions. [2023-11-29 05:22:39,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 363 flow [2023-11-29 05:22:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:22:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:22:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2023-11-29 05:22:39,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-29 05:22:39,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2023-11-29 05:22:39,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2023-11-29 05:22:39,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:39,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2023-11-29 05:22:39,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:39,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:39,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:39,853 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 189 flow. Second operand 6 states and 141 transitions. [2023-11-29 05:22:39,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 363 flow [2023-11-29 05:22:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 309 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-29 05:22:39,858 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 173 flow [2023-11-29 05:22:39,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-11-29 05:22:39,859 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-11-29 05:22:39,859 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 173 flow [2023-11-29 05:22:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:39,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:39,860 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 05:22:39,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:22:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:40,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:40,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1900508619, now seen corresponding path program 2 times [2023-11-29 05:22:40,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:40,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037285888] [2023-11-29 05:22:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:40,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037285888] [2023-11-29 05:22:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037285888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191083769] [2023-11-29 05:22:40,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:22:40,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:40,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:40,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:40,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:22:40,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:22:40,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:40,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:22:40,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:40,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191083769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:40,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:40,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2023-11-29 05:22:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761726061] [2023-11-29 05:22:40,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:22:40,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:22:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:22:40,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:40,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 173 flow. Second operand has 15 states, 15 states have (on average 19.133333333333333) internal successors, (287), 15 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:40,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:40,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:40,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:41,124 INFO L124 PetriNetUnfolderBase]: 130/276 cut-off events. [2023-11-29 05:22:41,125 INFO L125 PetriNetUnfolderBase]: For 255/257 co-relation queries the response was YES. [2023-11-29 05:22:41,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 276 events. 130/276 cut-off events. For 255/257 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1079 event pairs, 17 based on Foata normal form. 5/281 useless extension candidates. Maximal degree in co-relation 790. Up to 164 conditions per place. [2023-11-29 05:22:41,128 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 44 selfloop transitions, 23 changer transitions 8/81 dead transitions. [2023-11-29 05:22:41,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 485 flow [2023-11-29 05:22:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:22:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 05:22:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 286 transitions. [2023-11-29 05:22:41,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 05:22:41,130 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 286 transitions. [2023-11-29 05:22:41,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 286 transitions. [2023-11-29 05:22:41,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:41,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 286 transitions. [2023-11-29 05:22:41,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.0) internal successors, (286), 13 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,134 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,134 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 173 flow. Second operand 13 states and 286 transitions. [2023-11-29 05:22:41,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 485 flow [2023-11-29 05:22:41,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 472 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-29 05:22:41,138 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 323 flow [2023-11-29 05:22:41,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=323, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-11-29 05:22:41,139 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 05:22:41,139 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 323 flow [2023-11-29 05:22:41,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.133333333333333) internal successors, (287), 15 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:41,139 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 05:22:41,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:22:41,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:41,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:41,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1224744351, now seen corresponding path program 3 times [2023-11-29 05:22:41,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:41,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551298438] [2023-11-29 05:22:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:41,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:41,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551298438] [2023-11-29 05:22:41,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551298438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52196261] [2023-11-29 05:22:41,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:22:41,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:41,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:41,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:22:41,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:22:41,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:41,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:22:41,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:41,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:22:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52196261] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:41,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:22:41,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-29 05:22:41,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258789868] [2023-11-29 05:22:41,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:41,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:22:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:22:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:22:41,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:41,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:41,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:41,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:41,958 INFO L124 PetriNetUnfolderBase]: 140/301 cut-off events. [2023-11-29 05:22:41,958 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2023-11-29 05:22:41,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 301 events. 140/301 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1191 event pairs, 29 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 1101. Up to 220 conditions per place. [2023-11-29 05:22:41,962 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 47 selfloop transitions, 10 changer transitions 2/65 dead transitions. [2023-11-29 05:22:41,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 512 flow [2023-11-29 05:22:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:22:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:22:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2023-11-29 05:22:41,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 05:22:41,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 115 transitions. [2023-11-29 05:22:41,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 115 transitions. [2023-11-29 05:22:41,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:41,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 115 transitions. [2023-11-29 05:22:41,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,965 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 323 flow. Second operand 5 states and 115 transitions. [2023-11-29 05:22:41,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 512 flow [2023-11-29 05:22:41,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 454 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-29 05:22:41,970 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 332 flow [2023-11-29 05:22:41,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-29 05:22:41,971 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 05:22:41,971 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 332 flow [2023-11-29 05:22:41,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:41,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:41,972 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 05:22:41,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:22:42,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:42,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:42,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1841645123, now seen corresponding path program 1 times [2023-11-29 05:22:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:42,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247111427] [2023-11-29 05:22:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:42,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247111427] [2023-11-29 05:22:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247111427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:42,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643159457] [2023-11-29 05:22:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:42,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:42,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:42,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:42,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:22:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:42,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:22:42,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:42,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643159457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:43,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:22:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111136851] [2023-11-29 05:22:43,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:22:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:22:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:22:43,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:43,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 332 flow. Second operand has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:43,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:43,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:43,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:45,786 INFO L124 PetriNetUnfolderBase]: 222/477 cut-off events. [2023-11-29 05:22:45,786 INFO L125 PetriNetUnfolderBase]: For 1412/1418 co-relation queries the response was YES. [2023-11-29 05:22:45,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 477 events. 222/477 cut-off events. For 1412/1418 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2325 event pairs, 17 based on Foata normal form. 9/484 useless extension candidates. Maximal degree in co-relation 1810. Up to 193 conditions per place. [2023-11-29 05:22:45,790 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 77 selfloop transitions, 49 changer transitions 29/161 dead transitions. [2023-11-29 05:22:45,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 161 transitions, 1167 flow [2023-11-29 05:22:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:22:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 05:22:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 535 transitions. [2023-11-29 05:22:45,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755050505050505 [2023-11-29 05:22:45,794 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 535 transitions. [2023-11-29 05:22:45,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 535 transitions. [2023-11-29 05:22:45,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:45,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 535 transitions. [2023-11-29 05:22:45,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 22.291666666666668) internal successors, (535), 24 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:45,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:45,799 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:45,799 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 332 flow. Second operand 24 states and 535 transitions. [2023-11-29 05:22:45,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 161 transitions, 1167 flow [2023-11-29 05:22:45,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 161 transitions, 1144 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 05:22:45,843 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 657 flow [2023-11-29 05:22:45,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=657, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-29 05:22:45,844 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 59 predicate places. [2023-11-29 05:22:45,844 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 657 flow [2023-11-29 05:22:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:45,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:45,844 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 05:22:45,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:22:46,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:46,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:46,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1638979019, now seen corresponding path program 2 times [2023-11-29 05:22:46,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:46,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396676295] [2023-11-29 05:22:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:46,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:46,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396676295] [2023-11-29 05:22:46,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396676295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:46,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390195994] [2023-11-29 05:22:46,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:22:46,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:46,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:46,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:22:46,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:22:46,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:46,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:22:46,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:46,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:47,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390195994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:47,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:47,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-29 05:22:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065175294] [2023-11-29 05:22:47,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:47,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:22:47,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:22:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:22:47,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:47,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 657 flow. Second operand has 19 states, 19 states have (on average 18.736842105263158) internal successors, (356), 19 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:47,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:47,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:49,072 INFO L124 PetriNetUnfolderBase]: 272/608 cut-off events. [2023-11-29 05:22:49,072 INFO L125 PetriNetUnfolderBase]: For 3921/3934 co-relation queries the response was YES. [2023-11-29 05:22:49,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 608 events. 272/608 cut-off events. For 3921/3934 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3305 event pairs, 13 based on Foata normal form. 9/615 useless extension candidates. Maximal degree in co-relation 2848. Up to 230 conditions per place. [2023-11-29 05:22:49,079 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 92 selfloop transitions, 77 changer transitions 15/190 dead transitions. [2023-11-29 05:22:49,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 190 transitions, 1812 flow [2023-11-29 05:22:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:22:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 05:22:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 638 transitions. [2023-11-29 05:22:49,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 05:22:49,083 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 638 transitions. [2023-11-29 05:22:49,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 638 transitions. [2023-11-29 05:22:49,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:49,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 638 transitions. [2023-11-29 05:22:49,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 22.0) internal successors, (638), 29 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:49,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:49,090 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:49,090 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 657 flow. Second operand 29 states and 638 transitions. [2023-11-29 05:22:49,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 190 transitions, 1812 flow [2023-11-29 05:22:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 190 transitions, 1554 flow, removed 110 selfloop flow, removed 12 redundant places. [2023-11-29 05:22:49,113 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 1101 flow [2023-11-29 05:22:49,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1101, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2023-11-29 05:22:49,114 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 85 predicate places. [2023-11-29 05:22:49,114 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 1101 flow [2023-11-29 05:22:49,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.736842105263158) internal successors, (356), 19 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:49,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:49,115 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 05:22:49,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:22:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:22:49,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:49,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 741673565, now seen corresponding path program 3 times [2023-11-29 05:22:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769357820] [2023-11-29 05:22:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:49,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:49,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769357820] [2023-11-29 05:22:49,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769357820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:49,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106454366] [2023-11-29 05:22:49,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:22:49,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:49,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:49,961 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:49,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:22:50,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 05:22:50,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:50,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:22:50,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:50,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:50,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106454366] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:50,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:50,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-29 05:22:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060337203] [2023-11-29 05:22:50,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:22:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:22:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:22:50,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:50,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 1101 flow. Second operand has 19 states, 19 states have (on average 18.736842105263158) internal successors, (356), 19 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:50,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:50,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:50,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:52,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:53,220 INFO L124 PetriNetUnfolderBase]: 266/585 cut-off events. [2023-11-29 05:22:53,220 INFO L125 PetriNetUnfolderBase]: For 6054/6062 co-relation queries the response was YES. [2023-11-29 05:22:53,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 585 events. 266/585 cut-off events. For 6054/6062 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3111 event pairs, 16 based on Foata normal form. 10/595 useless extension candidates. Maximal degree in co-relation 3014. Up to 233 conditions per place. [2023-11-29 05:22:53,226 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 80 selfloop transitions, 77 changer transitions 15/178 dead transitions. [2023-11-29 05:22:53,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 178 transitions, 1789 flow [2023-11-29 05:22:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 05:22:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 05:22:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 551 transitions. [2023-11-29 05:22:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678787878787878 [2023-11-29 05:22:53,229 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 551 transitions. [2023-11-29 05:22:53,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 551 transitions. [2023-11-29 05:22:53,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:53,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 551 transitions. [2023-11-29 05:22:53,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 22.04) internal successors, (551), 25 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:53,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:53,233 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:53,233 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 1101 flow. Second operand 25 states and 551 transitions. [2023-11-29 05:22:53,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 178 transitions, 1789 flow [2023-11-29 05:22:53,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 178 transitions, 1482 flow, removed 133 selfloop flow, removed 13 redundant places. [2023-11-29 05:22:53,268 INFO L231 Difference]: Finished difference. Result has 134 places, 121 transitions, 1124 flow [2023-11-29 05:22:53,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1124, PETRI_PLACES=134, PETRI_TRANSITIONS=121} [2023-11-29 05:22:53,269 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 99 predicate places. [2023-11-29 05:22:53,269 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 121 transitions, 1124 flow [2023-11-29 05:22:53,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.736842105263158) internal successors, (356), 19 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:53,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:53,270 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 05:22:53,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:22:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:53,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:53,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1412252057, now seen corresponding path program 4 times [2023-11-29 05:22:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86463873] [2023-11-29 05:22:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:53,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86463873] [2023-11-29 05:22:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86463873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10588416] [2023-11-29 05:22:53,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:22:53,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:53,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:53,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:22:54,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:22:54,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:54,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:22:54,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:54,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10588416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:55,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:22:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194860077] [2023-11-29 05:22:55,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:55,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:22:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:22:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:22:55,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:55,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 121 transitions, 1124 flow. Second operand has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:55,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:55,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:55,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:56,243 INFO L124 PetriNetUnfolderBase]: 314/673 cut-off events. [2023-11-29 05:22:56,243 INFO L125 PetriNetUnfolderBase]: For 9493/9509 co-relation queries the response was YES. [2023-11-29 05:22:56,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3765 conditions, 673 events. 314/673 cut-off events. For 9493/9509 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3671 event pairs, 34 based on Foata normal form. 11/684 useless extension candidates. Maximal degree in co-relation 3714. Up to 479 conditions per place. [2023-11-29 05:22:56,250 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 125 selfloop transitions, 37 changer transitions 14/182 dead transitions. [2023-11-29 05:22:56,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 182 transitions, 2091 flow [2023-11-29 05:22:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:22:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 05:22:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 355 transitions. [2023-11-29 05:22:56,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6723484848484849 [2023-11-29 05:22:56,252 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 355 transitions. [2023-11-29 05:22:56,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 355 transitions. [2023-11-29 05:22:56,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:56,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 355 transitions. [2023-11-29 05:22:56,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 22.1875) internal successors, (355), 16 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:56,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:56,255 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:56,255 INFO L175 Difference]: Start difference. First operand has 134 places, 121 transitions, 1124 flow. Second operand 16 states and 355 transitions. [2023-11-29 05:22:56,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 182 transitions, 2091 flow [2023-11-29 05:22:56,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 182 transitions, 1823 flow, removed 64 selfloop flow, removed 19 redundant places. [2023-11-29 05:22:56,285 INFO L231 Difference]: Finished difference. Result has 134 places, 143 transitions, 1368 flow [2023-11-29 05:22:56,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1368, PETRI_PLACES=134, PETRI_TRANSITIONS=143} [2023-11-29 05:22:56,286 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 99 predicate places. [2023-11-29 05:22:56,286 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 143 transitions, 1368 flow [2023-11-29 05:22:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:56,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:56,287 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 05:22:56,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:22:56,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:22:56,489 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:56,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash 777670347, now seen corresponding path program 5 times [2023-11-29 05:22:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999989007] [2023-11-29 05:22:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999989007] [2023-11-29 05:22:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999989007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102297169] [2023-11-29 05:22:56,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:22:56,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:56,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:56,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:56,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:22:57,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:22:57,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:57,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:22:57,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:57,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102297169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:58,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:58,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:22:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706329617] [2023-11-29 05:22:58,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:22:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:22:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:22:58,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:22:58,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 143 transitions, 1368 flow. Second operand has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:58,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:58,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:22:58,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:59,202 INFO L124 PetriNetUnfolderBase]: 338/722 cut-off events. [2023-11-29 05:22:59,203 INFO L125 PetriNetUnfolderBase]: For 6976/6986 co-relation queries the response was YES. [2023-11-29 05:22:59,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3765 conditions, 722 events. 338/722 cut-off events. For 6976/6986 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4015 event pairs, 35 based on Foata normal form. 3/720 useless extension candidates. Maximal degree in co-relation 3708. Up to 548 conditions per place. [2023-11-29 05:22:59,209 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 137 selfloop transitions, 43 changer transitions 8/194 dead transitions. [2023-11-29 05:22:59,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 194 transitions, 2083 flow [2023-11-29 05:22:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:22:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:22:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 384 transitions. [2023-11-29 05:22:59,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2023-11-29 05:22:59,211 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 384 transitions. [2023-11-29 05:22:59,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 384 transitions. [2023-11-29 05:22:59,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:59,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 384 transitions. [2023-11-29 05:22:59,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 21.333333333333332) internal successors, (384), 18 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 05:22:59,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:59,214 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:59,214 INFO L175 Difference]: Start difference. First operand has 134 places, 143 transitions, 1368 flow. Second operand 18 states and 384 transitions. [2023-11-29 05:22:59,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 194 transitions, 2083 flow [2023-11-29 05:22:59,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 194 transitions, 1864 flow, removed 104 selfloop flow, removed 3 redundant places. [2023-11-29 05:22:59,242 INFO L231 Difference]: Finished difference. Result has 156 places, 164 transitions, 1546 flow [2023-11-29 05:22:59,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1546, PETRI_PLACES=156, PETRI_TRANSITIONS=164} [2023-11-29 05:22:59,243 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 121 predicate places. [2023-11-29 05:22:59,243 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 164 transitions, 1546 flow [2023-11-29 05:22:59,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:59,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:59,243 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 05:22:59,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:22:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:22:59,444 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:22:59,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1285112325, now seen corresponding path program 6 times [2023-11-29 05:22:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:59,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947829745] [2023-11-29 05:22:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:22:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:59,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947829745] [2023-11-29 05:22:59,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947829745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:59,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481750979] [2023-11-29 05:22:59,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:22:59,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:59,990 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:59,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:23:00,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:23:00,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:00,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:00,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:00,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:01,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481750979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:01,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:01,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736254354] [2023-11-29 05:23:01,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:01,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:01,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:01,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:01,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 164 transitions, 1546 flow. Second operand has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:01,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:01,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:01,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:02,637 INFO L124 PetriNetUnfolderBase]: 363/768 cut-off events. [2023-11-29 05:23:02,638 INFO L125 PetriNetUnfolderBase]: For 6683/6692 co-relation queries the response was YES. [2023-11-29 05:23:02,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4113 conditions, 768 events. 363/768 cut-off events. For 6683/6692 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4292 event pairs, 35 based on Foata normal form. 4/764 useless extension candidates. Maximal degree in co-relation 4048. Up to 515 conditions per place. [2023-11-29 05:23:02,647 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 130 selfloop transitions, 62 changer transitions 9/207 dead transitions. [2023-11-29 05:23:02,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 207 transitions, 2285 flow [2023-11-29 05:23:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:23:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:23:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 386 transitions. [2023-11-29 05:23:02,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-11-29 05:23:02,648 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 386 transitions. [2023-11-29 05:23:02,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 386 transitions. [2023-11-29 05:23:02,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:02,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 386 transitions. [2023-11-29 05:23:02,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 21.444444444444443) internal successors, (386), 18 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:02,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:02,650 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:02,650 INFO L175 Difference]: Start difference. First operand has 156 places, 164 transitions, 1546 flow. Second operand 18 states and 386 transitions. [2023-11-29 05:23:02,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 207 transitions, 2285 flow [2023-11-29 05:23:02,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 207 transitions, 2190 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-11-29 05:23:02,678 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 1817 flow [2023-11-29 05:23:02,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1817, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2023-11-29 05:23:02,678 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 137 predicate places. [2023-11-29 05:23:02,678 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 1817 flow [2023-11-29 05:23:02,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:02,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:02,679 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 05:23:02,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:23:02,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:23:02,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:02,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash -877036465, now seen corresponding path program 7 times [2023-11-29 05:23:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793372205] [2023-11-29 05:23:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:02,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:03,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:03,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793372205] [2023-11-29 05:23:03,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793372205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:03,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733858221] [2023-11-29 05:23:03,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:23:03,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:03,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:23:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:03,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:03,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:03,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:04,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733858221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:04,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:04,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192474654] [2023-11-29 05:23:04,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:04,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:04,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:04,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 1817 flow. Second operand has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:04,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:04,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:04,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:05,979 INFO L124 PetriNetUnfolderBase]: 363/767 cut-off events. [2023-11-29 05:23:05,980 INFO L125 PetriNetUnfolderBase]: For 7790/7799 co-relation queries the response was YES. [2023-11-29 05:23:05,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 767 events. 363/767 cut-off events. For 7790/7799 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4260 event pairs, 36 based on Foata normal form. 4/763 useless extension candidates. Maximal degree in co-relation 4287. Up to 518 conditions per place. [2023-11-29 05:23:05,991 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 133 selfloop transitions, 63 changer transitions 8/210 dead transitions. [2023-11-29 05:23:05,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 210 transitions, 2454 flow [2023-11-29 05:23:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:23:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:23:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 393 transitions. [2023-11-29 05:23:05,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6616161616161617 [2023-11-29 05:23:05,994 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 393 transitions. [2023-11-29 05:23:05,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 393 transitions. [2023-11-29 05:23:05,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:05,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 393 transitions. [2023-11-29 05:23:05,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 21.833333333333332) internal successors, (393), 18 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:05,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:05,997 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:05,997 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 1817 flow. Second operand 18 states and 393 transitions. [2023-11-29 05:23:05,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 210 transitions, 2454 flow [2023-11-29 05:23:06,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 210 transitions, 2203 flow, removed 96 selfloop flow, removed 13 redundant places. [2023-11-29 05:23:06,054 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 1831 flow [2023-11-29 05:23:06,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1831, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2023-11-29 05:23:06,055 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 142 predicate places. [2023-11-29 05:23:06,056 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 1831 flow [2023-11-29 05:23:06,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:06,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:06,056 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 05:23:06,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:23:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:23:06,262 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:06,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1371126189, now seen corresponding path program 8 times [2023-11-29 05:23:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:06,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14353492] [2023-11-29 05:23:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:06,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14353492] [2023-11-29 05:23:06,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14353492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:06,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428592475] [2023-11-29 05:23:06,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:23:06,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:06,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:06,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:23:06,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:23:06,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:06,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:06,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:06,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428592475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:08,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686848457] [2023-11-29 05:23:08,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:08,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:08,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 1831 flow. Second operand has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:08,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:08,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:08,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:09,666 INFO L124 PetriNetUnfolderBase]: 385/829 cut-off events. [2023-11-29 05:23:09,667 INFO L125 PetriNetUnfolderBase]: For 7316/7327 co-relation queries the response was YES. [2023-11-29 05:23:09,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 829 events. 385/829 cut-off events. For 7316/7327 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4809 event pairs, 38 based on Foata normal form. 4/825 useless extension candidates. Maximal degree in co-relation 4615. Up to 588 conditions per place. [2023-11-29 05:23:09,675 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 159 selfloop transitions, 57 changer transitions 10/232 dead transitions. [2023-11-29 05:23:09,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 232 transitions, 2698 flow [2023-11-29 05:23:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:23:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 05:23:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 496 transitions. [2023-11-29 05:23:09,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6534914361001317 [2023-11-29 05:23:09,677 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 496 transitions. [2023-11-29 05:23:09,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 496 transitions. [2023-11-29 05:23:09,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:09,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 496 transitions. [2023-11-29 05:23:09,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 21.565217391304348) internal successors, (496), 23 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:09,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:09,679 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:09,679 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 1831 flow. Second operand 23 states and 496 transitions. [2023-11-29 05:23:09,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 232 transitions, 2698 flow [2023-11-29 05:23:09,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 232 transitions, 2530 flow, removed 50 selfloop flow, removed 14 redundant places. [2023-11-29 05:23:09,711 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 2052 flow [2023-11-29 05:23:09,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2052, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2023-11-29 05:23:09,712 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 156 predicate places. [2023-11-29 05:23:09,712 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 2052 flow [2023-11-29 05:23:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:09,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:09,712 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 05:23:09,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:23:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:23:09,912 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:09,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 144794879, now seen corresponding path program 9 times [2023-11-29 05:23:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921201785] [2023-11-29 05:23:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921201785] [2023-11-29 05:23:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921201785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032039324] [2023-11-29 05:23:10,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:23:10,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:10,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:10,304 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:10,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:23:10,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:23:10,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:10,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:10,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:10,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032039324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:11,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:11,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411648124] [2023-11-29 05:23:11,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:11,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:11,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:11,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:11,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 2052 flow. Second operand has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:11,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:11,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:11,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:12,605 INFO L124 PetriNetUnfolderBase]: 404/864 cut-off events. [2023-11-29 05:23:12,606 INFO L125 PetriNetUnfolderBase]: For 9995/10007 co-relation queries the response was YES. [2023-11-29 05:23:12,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 864 events. 404/864 cut-off events. For 9995/10007 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5022 event pairs, 35 based on Foata normal form. 6/864 useless extension candidates. Maximal degree in co-relation 5122. Up to 644 conditions per place. [2023-11-29 05:23:12,615 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 179 selfloop transitions, 46 changer transitions 14/245 dead transitions. [2023-11-29 05:23:12,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 245 transitions, 3122 flow [2023-11-29 05:23:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:23:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:23:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 398 transitions. [2023-11-29 05:23:12,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67003367003367 [2023-11-29 05:23:12,617 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 398 transitions. [2023-11-29 05:23:12,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 398 transitions. [2023-11-29 05:23:12,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:12,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 398 transitions. [2023-11-29 05:23:12,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 22.11111111111111) internal successors, (398), 18 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:12,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:12,619 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 2052 flow. Second operand 18 states and 398 transitions. [2023-11-29 05:23:12,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 245 transitions, 3122 flow [2023-11-29 05:23:12,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 245 transitions, 2866 flow, removed 83 selfloop flow, removed 19 redundant places. [2023-11-29 05:23:12,661 INFO L231 Difference]: Finished difference. Result has 194 places, 204 transitions, 2256 flow [2023-11-29 05:23:12,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2256, PETRI_PLACES=194, PETRI_TRANSITIONS=204} [2023-11-29 05:23:12,662 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 159 predicate places. [2023-11-29 05:23:12,662 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 204 transitions, 2256 flow [2023-11-29 05:23:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:12,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:12,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:12,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:23:12,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:12,863 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:12,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:12,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1569765878, now seen corresponding path program 4 times [2023-11-29 05:23:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391476393] [2023-11-29 05:23:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:13,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391476393] [2023-11-29 05:23:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391476393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774855119] [2023-11-29 05:23:13,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:23:13,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:13,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:13,055 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:13,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:23:13,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:23:13,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:13,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 05:23:13,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:13,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:23:13,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774855119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:13,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:13,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2023-11-29 05:23:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142434808] [2023-11-29 05:23:13,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:13,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:23:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:23:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:23:13,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:13,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 204 transitions, 2256 flow. Second operand has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:13,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:13,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:13,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:14,066 INFO L124 PetriNetUnfolderBase]: 444/947 cut-off events. [2023-11-29 05:23:14,066 INFO L125 PetriNetUnfolderBase]: For 12278/12290 co-relation queries the response was YES. [2023-11-29 05:23:14,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 947 events. 444/947 cut-off events. For 12278/12290 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5635 event pairs, 30 based on Foata normal form. 5/946 useless extension candidates. Maximal degree in co-relation 5769. Up to 642 conditions per place. [2023-11-29 05:23:14,081 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 188 selfloop transitions, 47 changer transitions 6/247 dead transitions. [2023-11-29 05:23:14,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 247 transitions, 3321 flow [2023-11-29 05:23:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:23:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 05:23:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 291 transitions. [2023-11-29 05:23:14,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783216783216783 [2023-11-29 05:23:14,082 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 291 transitions. [2023-11-29 05:23:14,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 291 transitions. [2023-11-29 05:23:14,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:14,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 291 transitions. [2023-11-29 05:23:14,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.384615384615383) internal successors, (291), 13 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:14,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:14,085 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:14,085 INFO L175 Difference]: Start difference. First operand has 194 places, 204 transitions, 2256 flow. Second operand 13 states and 291 transitions. [2023-11-29 05:23:14,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 247 transitions, 3321 flow [2023-11-29 05:23:14,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 3078 flow, removed 109 selfloop flow, removed 8 redundant places. [2023-11-29 05:23:14,143 INFO L231 Difference]: Finished difference. Result has 200 places, 218 transitions, 2376 flow [2023-11-29 05:23:14,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2376, PETRI_PLACES=200, PETRI_TRANSITIONS=218} [2023-11-29 05:23:14,144 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 165 predicate places. [2023-11-29 05:23:14,144 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 218 transitions, 2376 flow [2023-11-29 05:23:14,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:14,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:14,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:14,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:23:14,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:14,345 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:14,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash -66039108, now seen corresponding path program 3 times [2023-11-29 05:23:14,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:14,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077277125] [2023-11-29 05:23:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:14,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:14,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077277125] [2023-11-29 05:23:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077277125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251488812] [2023-11-29 05:23:14,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:23:14,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:14,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:14,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:14,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:23:14,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:23:14,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:14,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:23:14,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:14,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251488812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:19,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2023-11-29 05:23:19,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243369046] [2023-11-29 05:23:19,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:19,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:23:19,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:23:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2023-11-29 05:23:19,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:19,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 218 transitions, 2376 flow. Second operand has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:19,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:19,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:19,756 INFO L124 PetriNetUnfolderBase]: 448/970 cut-off events. [2023-11-29 05:23:19,756 INFO L125 PetriNetUnfolderBase]: For 11970/11982 co-relation queries the response was YES. [2023-11-29 05:23:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5911 conditions, 970 events. 448/970 cut-off events. For 11970/11982 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5848 event pairs, 53 based on Foata normal form. 5/969 useless extension candidates. Maximal degree in co-relation 5831. Up to 751 conditions per place. [2023-11-29 05:23:19,767 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 189 selfloop transitions, 28 changer transitions 25/248 dead transitions. [2023-11-29 05:23:19,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 248 transitions, 3079 flow [2023-11-29 05:23:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:23:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:23:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 251 transitions. [2023-11-29 05:23:19,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914600550964187 [2023-11-29 05:23:19,768 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 251 transitions. [2023-11-29 05:23:19,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 251 transitions. [2023-11-29 05:23:19,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:19,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 251 transitions. [2023-11-29 05:23:19,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,770 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,770 INFO L175 Difference]: Start difference. First operand has 200 places, 218 transitions, 2376 flow. Second operand 11 states and 251 transitions. [2023-11-29 05:23:19,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 248 transitions, 3079 flow [2023-11-29 05:23:19,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 248 transitions, 2948 flow, removed 54 selfloop flow, removed 4 redundant places. [2023-11-29 05:23:19,826 INFO L231 Difference]: Finished difference. Result has 209 places, 213 transitions, 2262 flow [2023-11-29 05:23:19,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2262, PETRI_PLACES=209, PETRI_TRANSITIONS=213} [2023-11-29 05:23:19,827 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 174 predicate places. [2023-11-29 05:23:19,827 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 213 transitions, 2262 flow [2023-11-29 05:23:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.615384615384617) internal successors, (255), 13 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:19,828 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 05:23:19,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:23:20,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:20,028 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:20,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash -101415557, now seen corresponding path program 10 times [2023-11-29 05:23:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:20,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676155792] [2023-11-29 05:23:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:20,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676155792] [2023-11-29 05:23:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676155792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723700852] [2023-11-29 05:23:20,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:23:20,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:20,486 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:20,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:23:20,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:23:20,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:20,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:20,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:20,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:21,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723700852] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:21,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:21,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:21,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549508094] [2023-11-29 05:23:21,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:21,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:21,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:21,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:21,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 213 transitions, 2262 flow. Second operand has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:21,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:21,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:21,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:23,309 INFO L124 PetriNetUnfolderBase]: 479/1036 cut-off events. [2023-11-29 05:23:23,309 INFO L125 PetriNetUnfolderBase]: For 13786/13802 co-relation queries the response was YES. [2023-11-29 05:23:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6394 conditions, 1036 events. 479/1036 cut-off events. For 13786/13802 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6409 event pairs, 40 based on Foata normal form. 8/1038 useless extension candidates. Maximal degree in co-relation 6311. Up to 703 conditions per place. [2023-11-29 05:23:23,321 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 189 selfloop transitions, 70 changer transitions 27/292 dead transitions. [2023-11-29 05:23:23,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 292 transitions, 3702 flow [2023-11-29 05:23:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:23:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 05:23:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 519 transitions. [2023-11-29 05:23:23,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2023-11-29 05:23:23,323 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 519 transitions. [2023-11-29 05:23:23,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 519 transitions. [2023-11-29 05:23:23,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:23,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 519 transitions. [2023-11-29 05:23:23,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 21.625) internal successors, (519), 24 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,325 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,325 INFO L175 Difference]: Start difference. First operand has 209 places, 213 transitions, 2262 flow. Second operand 24 states and 519 transitions. [2023-11-29 05:23:23,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 292 transitions, 3702 flow [2023-11-29 05:23:23,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 292 transitions, 3595 flow, removed 22 selfloop flow, removed 11 redundant places. [2023-11-29 05:23:23,389 INFO L231 Difference]: Finished difference. Result has 226 places, 235 transitions, 2807 flow [2023-11-29 05:23:23,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2807, PETRI_PLACES=226, PETRI_TRANSITIONS=235} [2023-11-29 05:23:23,390 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 191 predicate places. [2023-11-29 05:23:23,390 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 235 transitions, 2807 flow [2023-11-29 05:23:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:23,390 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 05:23:23,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:23:23,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 05:23:23,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:23,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash -105785995, now seen corresponding path program 11 times [2023-11-29 05:23:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235012276] [2023-11-29 05:23:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:23,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:24,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:24,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235012276] [2023-11-29 05:23:24,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235012276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:24,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855926095] [2023-11-29 05:23:24,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:23:24,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:24,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:24,130 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:24,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:23:24,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 05:23:24,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:24,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:24,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855926095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:24,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-29 05:23:24,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741068048] [2023-11-29 05:23:24,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:24,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:23:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:23:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:23:24,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:24,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 235 transitions, 2807 flow. Second operand has 19 states, 19 states have (on average 18.789473684210527) internal successors, (357), 19 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:24,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:24,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:24,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:26,970 INFO L124 PetriNetUnfolderBase]: 509/1091 cut-off events. [2023-11-29 05:23:26,970 INFO L125 PetriNetUnfolderBase]: For 19922/19942 co-relation queries the response was YES. [2023-11-29 05:23:26,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7456 conditions, 1091 events. 509/1091 cut-off events. For 19922/19942 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6759 event pairs, 38 based on Foata normal form. 8/1092 useless extension candidates. Maximal degree in co-relation 7367. Up to 707 conditions per place. [2023-11-29 05:23:26,983 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 188 selfloop transitions, 96 changer transitions 14/304 dead transitions. [2023-11-29 05:23:26,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 304 transitions, 4381 flow [2023-11-29 05:23:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 05:23:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 05:23:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 523 transitions. [2023-11-29 05:23:26,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6603535353535354 [2023-11-29 05:23:26,984 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 523 transitions. [2023-11-29 05:23:26,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 523 transitions. [2023-11-29 05:23:26,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:26,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 523 transitions. [2023-11-29 05:23:26,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 21.791666666666668) internal successors, (523), 24 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:26,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:26,987 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:26,987 INFO L175 Difference]: Start difference. First operand has 226 places, 235 transitions, 2807 flow. Second operand 24 states and 523 transitions. [2023-11-29 05:23:26,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 304 transitions, 4381 flow [2023-11-29 05:23:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 304 transitions, 3932 flow, removed 207 selfloop flow, removed 8 redundant places. [2023-11-29 05:23:27,089 INFO L231 Difference]: Finished difference. Result has 245 places, 256 transitions, 3243 flow [2023-11-29 05:23:27,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3243, PETRI_PLACES=245, PETRI_TRANSITIONS=256} [2023-11-29 05:23:27,090 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 210 predicate places. [2023-11-29 05:23:27,090 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 256 transitions, 3243 flow [2023-11-29 05:23:27,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.789473684210527) internal successors, (357), 19 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:27,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:27,091 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 05:23:27,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:23:27,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 05:23:27,291 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:27,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1490591137, now seen corresponding path program 12 times [2023-11-29 05:23:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641286443] [2023-11-29 05:23:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:27,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:27,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:27,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641286443] [2023-11-29 05:23:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641286443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:27,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522341454] [2023-11-29 05:23:27,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:23:27,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:27,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:27,792 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:27,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:23:27,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:23:27,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:27,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:27,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:28,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522341454] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:29,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:29,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:29,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218260716] [2023-11-29 05:23:29,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:29,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:29,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:29,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:29,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 256 transitions, 3243 flow. Second operand has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:29,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:29,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:30,195 INFO L124 PetriNetUnfolderBase]: 531/1132 cut-off events. [2023-11-29 05:23:30,195 INFO L125 PetriNetUnfolderBase]: For 22494/22512 co-relation queries the response was YES. [2023-11-29 05:23:30,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7961 conditions, 1132 events. 531/1132 cut-off events. For 22494/22512 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7078 event pairs, 42 based on Foata normal form. 5/1130 useless extension candidates. Maximal degree in co-relation 7867. Up to 864 conditions per place. [2023-11-29 05:23:30,211 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 230 selfloop transitions, 56 changer transitions 8/300 dead transitions. [2023-11-29 05:23:30,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 300 transitions, 4365 flow [2023-11-29 05:23:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:23:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:23:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 445 transitions. [2023-11-29 05:23:30,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421356421356421 [2023-11-29 05:23:30,213 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 445 transitions. [2023-11-29 05:23:30,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 445 transitions. [2023-11-29 05:23:30,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:30,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 445 transitions. [2023-11-29 05:23:30,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 21.19047619047619) internal successors, (445), 21 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:30,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:30,216 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:30,216 INFO L175 Difference]: Start difference. First operand has 245 places, 256 transitions, 3243 flow. Second operand 21 states and 445 transitions. [2023-11-29 05:23:30,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 300 transitions, 4365 flow [2023-11-29 05:23:30,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 3868 flow, removed 213 selfloop flow, removed 12 redundant places. [2023-11-29 05:23:30,358 INFO L231 Difference]: Finished difference. Result has 255 places, 266 transitions, 3216 flow [2023-11-29 05:23:30,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3216, PETRI_PLACES=255, PETRI_TRANSITIONS=266} [2023-11-29 05:23:30,359 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 220 predicate places. [2023-11-29 05:23:30,359 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 266 transitions, 3216 flow [2023-11-29 05:23:30,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:30,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:30,359 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 05:23:30,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:23:30,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 05:23:30,560 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:30,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1161925889, now seen corresponding path program 13 times [2023-11-29 05:23:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110347315] [2023-11-29 05:23:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:30,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:30,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:30,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110347315] [2023-11-29 05:23:30,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110347315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:30,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624196677] [2023-11-29 05:23:30,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:23:30,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:30,960 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:30,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:23:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:31,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:31,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:31,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624196677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:32,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:32,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:32,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865005257] [2023-11-29 05:23:32,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:32,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:32,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:32,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:32,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 266 transitions, 3216 flow. Second operand has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:32,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:32,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:32,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:33,017 INFO L124 PetriNetUnfolderBase]: 533/1130 cut-off events. [2023-11-29 05:23:33,017 INFO L125 PetriNetUnfolderBase]: For 20638/20655 co-relation queries the response was YES. [2023-11-29 05:23:33,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7632 conditions, 1130 events. 533/1130 cut-off events. For 20638/20655 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7027 event pairs, 49 based on Foata normal form. 4/1127 useless extension candidates. Maximal degree in co-relation 7535. Up to 934 conditions per place. [2023-11-29 05:23:33,026 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 244 selfloop transitions, 39 changer transitions 6/295 dead transitions. [2023-11-29 05:23:33,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 295 transitions, 4064 flow [2023-11-29 05:23:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:23:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 05:23:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 341 transitions. [2023-11-29 05:23:33,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-29 05:23:33,028 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 341 transitions. [2023-11-29 05:23:33,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 341 transitions. [2023-11-29 05:23:33,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:33,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 341 transitions. [2023-11-29 05:23:33,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.3125) internal successors, (341), 16 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:33,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:33,029 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:33,029 INFO L175 Difference]: Start difference. First operand has 255 places, 266 transitions, 3216 flow. Second operand 16 states and 341 transitions. [2023-11-29 05:23:33,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 295 transitions, 4064 flow [2023-11-29 05:23:33,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 295 transitions, 3793 flow, removed 105 selfloop flow, removed 17 redundant places. [2023-11-29 05:23:33,139 INFO L231 Difference]: Finished difference. Result has 256 places, 271 transitions, 3189 flow [2023-11-29 05:23:33,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3189, PETRI_PLACES=256, PETRI_TRANSITIONS=271} [2023-11-29 05:23:33,140 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 221 predicate places. [2023-11-29 05:23:33,140 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 271 transitions, 3189 flow [2023-11-29 05:23:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:33,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:33,140 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 05:23:33,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:23:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:33,341 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:33,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 984244871, now seen corresponding path program 14 times [2023-11-29 05:23:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:33,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365997252] [2023-11-29 05:23:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:33,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:33,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365997252] [2023-11-29 05:23:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365997252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879302632] [2023-11-29 05:23:33,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:23:33,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:33,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:33,755 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:33,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:23:33,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:23:33,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:33,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:33,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:33,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:34,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879302632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:34,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:34,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:34,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605268860] [2023-11-29 05:23:34,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:34,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:34,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:34,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 271 transitions, 3189 flow. Second operand has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:34,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:34,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:34,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:36,536 INFO L124 PetriNetUnfolderBase]: 557/1185 cut-off events. [2023-11-29 05:23:36,536 INFO L125 PetriNetUnfolderBase]: For 23675/23693 co-relation queries the response was YES. [2023-11-29 05:23:36,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8161 conditions, 1185 events. 557/1185 cut-off events. For 23675/23693 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7447 event pairs, 46 based on Foata normal form. 5/1181 useless extension candidates. Maximal degree in co-relation 8063. Up to 913 conditions per place. [2023-11-29 05:23:36,548 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 243 selfloop transitions, 58 changer transitions 7/314 dead transitions. [2023-11-29 05:23:36,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 314 transitions, 4433 flow [2023-11-29 05:23:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:23:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 05:23:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 391 transitions. [2023-11-29 05:23:36,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6582491582491582 [2023-11-29 05:23:36,550 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 391 transitions. [2023-11-29 05:23:36,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 391 transitions. [2023-11-29 05:23:36,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:36,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 391 transitions. [2023-11-29 05:23:36,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 21.72222222222222) internal successors, (391), 18 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:36,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:36,552 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:36,552 INFO L175 Difference]: Start difference. First operand has 256 places, 271 transitions, 3189 flow. Second operand 18 states and 391 transitions. [2023-11-29 05:23:36,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 314 transitions, 4433 flow [2023-11-29 05:23:36,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 314 transitions, 4214 flow, removed 85 selfloop flow, removed 11 redundant places. [2023-11-29 05:23:36,671 INFO L231 Difference]: Finished difference. Result has 267 places, 280 transitions, 3522 flow [2023-11-29 05:23:36,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3522, PETRI_PLACES=267, PETRI_TRANSITIONS=280} [2023-11-29 05:23:36,672 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 232 predicate places. [2023-11-29 05:23:36,672 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 280 transitions, 3522 flow [2023-11-29 05:23:36,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.77777777777778) internal successors, (338), 18 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:36,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:36,673 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 05:23:36,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:23:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:36,873 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:36,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash 98446591, now seen corresponding path program 15 times [2023-11-29 05:23:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527927713] [2023-11-29 05:23:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527927713] [2023-11-29 05:23:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527927713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654943415] [2023-11-29 05:23:37,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:23:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:37,391 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:37,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:23:37,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:23:37,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:37,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:37,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:37,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654943415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:38,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-29 05:23:38,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144087008] [2023-11-29 05:23:38,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:38,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:23:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:23:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:23:38,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:38,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 280 transitions, 3522 flow. Second operand has 19 states, 19 states have (on average 18.736842105263158) internal successors, (356), 19 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:38,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:38,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:40,157 INFO L124 PetriNetUnfolderBase]: 558/1202 cut-off events. [2023-11-29 05:23:40,158 INFO L125 PetriNetUnfolderBase]: For 24951/24971 co-relation queries the response was YES. [2023-11-29 05:23:40,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 1202 events. 558/1202 cut-off events. For 24951/24971 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7634 event pairs, 41 based on Foata normal form. 5/1198 useless extension candidates. Maximal degree in co-relation 8158. Up to 808 conditions per place. [2023-11-29 05:23:40,168 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 218 selfloop transitions, 101 changer transitions 12/337 dead transitions. [2023-11-29 05:23:40,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 337 transitions, 4584 flow [2023-11-29 05:23:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:23:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 05:23:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 566 transitions. [2023-11-29 05:23:40,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6596736596736597 [2023-11-29 05:23:40,170 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 566 transitions. [2023-11-29 05:23:40,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 566 transitions. [2023-11-29 05:23:40,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:40,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 566 transitions. [2023-11-29 05:23:40,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 21.76923076923077) internal successors, (566), 26 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:40,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:40,172 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:40,172 INFO L175 Difference]: Start difference. First operand has 267 places, 280 transitions, 3522 flow. Second operand 26 states and 566 transitions. [2023-11-29 05:23:40,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 337 transitions, 4584 flow [2023-11-29 05:23:40,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 337 transitions, 4201 flow, removed 142 selfloop flow, removed 14 redundant places. [2023-11-29 05:23:40,297 INFO L231 Difference]: Finished difference. Result has 280 places, 287 transitions, 3567 flow [2023-11-29 05:23:40,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3567, PETRI_PLACES=280, PETRI_TRANSITIONS=287} [2023-11-29 05:23:40,298 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 245 predicate places. [2023-11-29 05:23:40,298 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 287 transitions, 3567 flow [2023-11-29 05:23:40,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.736842105263158) internal successors, (356), 19 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:40,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:40,298 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 05:23:40,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:23:40,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:23:40,499 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:40,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash -275758133, now seen corresponding path program 16 times [2023-11-29 05:23:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438866174] [2023-11-29 05:23:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:40,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:40,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438866174] [2023-11-29 05:23:40,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438866174] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:40,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973406592] [2023-11-29 05:23:40,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:23:40,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:40,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:40,924 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:40,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:23:40,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:23:40,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:40,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:23:40,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:41,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:42,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973406592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:42,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:42,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-11-29 05:23:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254914553] [2023-11-29 05:23:42,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:42,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:23:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:23:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:23:42,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:42,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 287 transitions, 3567 flow. Second operand has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:42,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:42,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:46,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:47,621 INFO L124 PetriNetUnfolderBase]: 580/1237 cut-off events. [2023-11-29 05:23:47,621 INFO L125 PetriNetUnfolderBase]: For 23184/23205 co-relation queries the response was YES. [2023-11-29 05:23:47,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 1237 events. 580/1237 cut-off events. For 23184/23205 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7866 event pairs, 45 based on Foata normal form. 6/1232 useless extension candidates. Maximal degree in co-relation 8419. Up to 953 conditions per place. [2023-11-29 05:23:47,634 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 262 selfloop transitions, 60 changer transitions 9/337 dead transitions. [2023-11-29 05:23:47,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 337 transitions, 4692 flow [2023-11-29 05:23:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:23:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 05:23:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 472 transitions. [2023-11-29 05:23:47,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.650137741046832 [2023-11-29 05:23:47,636 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 472 transitions. [2023-11-29 05:23:47,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 472 transitions. [2023-11-29 05:23:47,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:47,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 472 transitions. [2023-11-29 05:23:47,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 21.454545454545453) internal successors, (472), 22 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:47,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 33.0) internal successors, (759), 23 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:47,638 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 33.0) internal successors, (759), 23 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:47,638 INFO L175 Difference]: Start difference. First operand has 280 places, 287 transitions, 3567 flow. Second operand 22 states and 472 transitions. [2023-11-29 05:23:47,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 337 transitions, 4692 flow [2023-11-29 05:23:47,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 337 transitions, 4322 flow, removed 120 selfloop flow, removed 21 redundant places. [2023-11-29 05:23:47,795 INFO L231 Difference]: Finished difference. Result has 284 places, 297 transitions, 3670 flow [2023-11-29 05:23:47,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3670, PETRI_PLACES=284, PETRI_TRANSITIONS=297} [2023-11-29 05:23:47,796 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 249 predicate places. [2023-11-29 05:23:47,796 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 297 transitions, 3670 flow [2023-11-29 05:23:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.833333333333332) internal successors, (339), 18 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:47,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:47,796 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:47,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:23:47,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:47,997 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:47,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash 296794241, now seen corresponding path program 17 times [2023-11-29 05:23:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153479903] [2023-11-29 05:23:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:48,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153479903] [2023-11-29 05:23:48,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153479903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:48,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642337492] [2023-11-29 05:23:48,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:23:48,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:48,733 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:48,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:23:48,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:23:48,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:48,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:23:48,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:49,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:50,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642337492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:50,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:50,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-11-29 05:23:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36159611] [2023-11-29 05:23:50,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:50,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:23:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:23:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:23:50,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:50,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 297 transitions, 3670 flow. Second operand has 21 states, 21 states have (on average 18.714285714285715) internal successors, (393), 21 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:50,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:50,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:50,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:53,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:56,935 INFO L124 PetriNetUnfolderBase]: 626/1357 cut-off events. [2023-11-29 05:23:56,935 INFO L125 PetriNetUnfolderBase]: For 29440/29459 co-relation queries the response was YES. [2023-11-29 05:23:56,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9622 conditions, 1357 events. 626/1357 cut-off events. For 29440/29459 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8944 event pairs, 30 based on Foata normal form. 10/1357 useless extension candidates. Maximal degree in co-relation 9519. Up to 850 conditions per place. [2023-11-29 05:23:56,951 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 268 selfloop transitions, 101 changer transitions 23/398 dead transitions. [2023-11-29 05:23:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 398 transitions, 5680 flow [2023-11-29 05:23:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:23:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 05:23:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 719 transitions. [2023-11-29 05:23:56,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660238751147842 [2023-11-29 05:23:56,952 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 719 transitions. [2023-11-29 05:23:56,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 719 transitions. [2023-11-29 05:23:56,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:56,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 719 transitions. [2023-11-29 05:23:56,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 21.78787878787879) internal successors, (719), 33 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:56,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 33.0) internal successors, (1122), 34 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:56,975 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 33.0) internal successors, (1122), 34 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:56,975 INFO L175 Difference]: Start difference. First operand has 284 places, 297 transitions, 3670 flow. Second operand 33 states and 719 transitions. [2023-11-29 05:23:56,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 398 transitions, 5680 flow [2023-11-29 05:23:57,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 398 transitions, 5416 flow, removed 103 selfloop flow, removed 18 redundant places. [2023-11-29 05:23:57,122 INFO L231 Difference]: Finished difference. Result has 308 places, 322 transitions, 4342 flow [2023-11-29 05:23:57,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4342, PETRI_PLACES=308, PETRI_TRANSITIONS=322} [2023-11-29 05:23:57,123 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 273 predicate places. [2023-11-29 05:23:57,123 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 322 transitions, 4342 flow [2023-11-29 05:23:57,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.714285714285715) internal successors, (393), 21 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:57,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:57,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:57,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:23:57,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:23:57,324 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:23:57,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 85960254, now seen corresponding path program 4 times [2023-11-29 05:23:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397814707] [2023-11-29 05:23:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:57,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397814707] [2023-11-29 05:23:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397814707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293584017] [2023-11-29 05:23:57,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:23:57,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:57,553 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:57,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:23:57,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:23:57,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:57,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:23:57,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:57,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:23:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293584017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:58,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:58,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 13 [2023-11-29 05:23:58,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316975186] [2023-11-29 05:23:58,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:23:58,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:23:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:23:58,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:23:58,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 322 transitions, 4342 flow. Second operand has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:58,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:58,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:23:58,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:24:03,356 INFO L124 PetriNetUnfolderBase]: 610/1330 cut-off events. [2023-11-29 05:24:03,357 INFO L125 PetriNetUnfolderBase]: For 27871/27886 co-relation queries the response was YES. [2023-11-29 05:24:03,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 1330 events. 610/1330 cut-off events. For 27871/27886 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8745 event pairs, 32 based on Foata normal form. 6/1326 useless extension candidates. Maximal degree in co-relation 9453. Up to 978 conditions per place. [2023-11-29 05:24:03,370 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 277 selfloop transitions, 61 changer transitions 17/361 dead transitions. [2023-11-29 05:24:03,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 361 transitions, 5402 flow [2023-11-29 05:24:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:24:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:24:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 377 transitions. [2023-11-29 05:24:03,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6720142602495544 [2023-11-29 05:24:03,371 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 377 transitions. [2023-11-29 05:24:03,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 377 transitions. [2023-11-29 05:24:03,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:24:03,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 377 transitions. [2023-11-29 05:24:03,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 22.176470588235293) internal successors, (377), 17 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:03,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:03,373 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:03,373 INFO L175 Difference]: Start difference. First operand has 308 places, 322 transitions, 4342 flow. Second operand 17 states and 377 transitions. [2023-11-29 05:24:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 361 transitions, 5402 flow [2023-11-29 05:24:03,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 361 transitions, 4687 flow, removed 325 selfloop flow, removed 16 redundant places. [2023-11-29 05:24:03,531 INFO L231 Difference]: Finished difference. Result has 307 places, 319 transitions, 3890 flow [2023-11-29 05:24:03,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3757, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3890, PETRI_PLACES=307, PETRI_TRANSITIONS=319} [2023-11-29 05:24:03,531 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 272 predicate places. [2023-11-29 05:24:03,532 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 319 transitions, 3890 flow [2023-11-29 05:24:03,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.571428571428573) internal successors, (274), 14 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:03,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:24:03,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:03,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:24:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:03,732 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:24:03,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -762546304, now seen corresponding path program 5 times [2023-11-29 05:24:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110953709] [2023-11-29 05:24:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110953709] [2023-11-29 05:24:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110953709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729330811] [2023-11-29 05:24:03,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:24:03,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:03,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:03,898 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:03,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:24:04,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 05:24:04,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:24:04,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:24:04,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:04,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:24:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:04,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729330811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:24:04,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:24:04,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-11-29 05:24:04,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036102148] [2023-11-29 05:24:04,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:24:04,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:24:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:24:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:24:04,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:24:04,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 319 transitions, 3890 flow. Second operand has 17 states, 17 states have (on average 19.294117647058822) internal successors, (328), 17 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:04,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:24:04,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:24:04,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:24:06,190 INFO L124 PetriNetUnfolderBase]: 609/1337 cut-off events. [2023-11-29 05:24:06,190 INFO L125 PetriNetUnfolderBase]: For 20471/20488 co-relation queries the response was YES. [2023-11-29 05:24:06,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8862 conditions, 1337 events. 609/1337 cut-off events. For 20471/20488 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8888 event pairs, 34 based on Foata normal form. 7/1328 useless extension candidates. Maximal degree in co-relation 8754. Up to 946 conditions per place. [2023-11-29 05:24:06,206 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 270 selfloop transitions, 47 changer transitions 36/359 dead transitions. [2023-11-29 05:24:06,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 359 transitions, 4962 flow [2023-11-29 05:24:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:24:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:24:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 371 transitions. [2023-11-29 05:24:06,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.661319073083779 [2023-11-29 05:24:06,207 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 371 transitions. [2023-11-29 05:24:06,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 371 transitions. [2023-11-29 05:24:06,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:24:06,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 371 transitions. [2023-11-29 05:24:06,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.823529411764707) internal successors, (371), 17 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:06,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:06,209 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:06,209 INFO L175 Difference]: Start difference. First operand has 307 places, 319 transitions, 3890 flow. Second operand 17 states and 371 transitions. [2023-11-29 05:24:06,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 359 transitions, 4962 flow [2023-11-29 05:24:06,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 359 transitions, 4830 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-11-29 05:24:06,368 INFO L231 Difference]: Finished difference. Result has 312 places, 302 transitions, 3702 flow [2023-11-29 05:24:06,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3702, PETRI_PLACES=312, PETRI_TRANSITIONS=302} [2023-11-29 05:24:06,369 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 277 predicate places. [2023-11-29 05:24:06,369 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 302 transitions, 3702 flow [2023-11-29 05:24:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.294117647058822) internal successors, (328), 17 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:06,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:24:06,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:06,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 05:24:06,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:06,570 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:24:06,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1241991680, now seen corresponding path program 18 times [2023-11-29 05:24:06,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:06,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655251575] [2023-11-29 05:24:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:06,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655251575] [2023-11-29 05:24:07,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655251575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110248093] [2023-11-29 05:24:07,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:24:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:07,493 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:07,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:24:07,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 05:24:07,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:24:07,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:24:07,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:08,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:24:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110248093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:24:10,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:24:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-11-29 05:24:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512427042] [2023-11-29 05:24:10,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:24:10,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:24:10,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:10,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:24:10,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:24:10,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:24:10,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 302 transitions, 3702 flow. Second operand has 22 states, 22 states have (on average 18.681818181818183) internal successors, (411), 22 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:10,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:24:10,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:24:10,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:24:14,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:24:17,516 INFO L124 PetriNetUnfolderBase]: 584/1244 cut-off events. [2023-11-29 05:24:17,516 INFO L125 PetriNetUnfolderBase]: For 22299/22315 co-relation queries the response was YES. [2023-11-29 05:24:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8624 conditions, 1244 events. 584/1244 cut-off events. For 22299/22315 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7988 event pairs, 25 based on Foata normal form. 13/1245 useless extension candidates. Maximal degree in co-relation 8515. Up to 829 conditions per place. [2023-11-29 05:24:17,527 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 236 selfloop transitions, 107 changer transitions 13/362 dead transitions. [2023-11-29 05:24:17,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 362 transitions, 4807 flow [2023-11-29 05:24:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 05:24:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 05:24:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 601 transitions. [2023-11-29 05:24:17,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504329004329005 [2023-11-29 05:24:17,529 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 601 transitions. [2023-11-29 05:24:17,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 601 transitions. [2023-11-29 05:24:17,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:24:17,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 601 transitions. [2023-11-29 05:24:17,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 21.464285714285715) internal successors, (601), 28 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:17,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 33.0) internal successors, (957), 29 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:17,532 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 33.0) internal successors, (957), 29 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:17,532 INFO L175 Difference]: Start difference. First operand has 312 places, 302 transitions, 3702 flow. Second operand 28 states and 601 transitions. [2023-11-29 05:24:17,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 362 transitions, 4807 flow [2023-11-29 05:24:17,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 362 transitions, 4625 flow, removed 64 selfloop flow, removed 18 redundant places. [2023-11-29 05:24:17,640 INFO L231 Difference]: Finished difference. Result has 308 places, 306 transitions, 3870 flow [2023-11-29 05:24:17,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3870, PETRI_PLACES=308, PETRI_TRANSITIONS=306} [2023-11-29 05:24:17,640 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 273 predicate places. [2023-11-29 05:24:17,640 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 306 transitions, 3870 flow [2023-11-29 05:24:17,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.681818181818183) internal successors, (411), 22 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:17,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:24:17,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:17,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 05:24:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:17,841 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:24:17,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1452825667, now seen corresponding path program 19 times [2023-11-29 05:24:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966714942] [2023-11-29 05:24:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966714942] [2023-11-29 05:24:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966714942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281261096] [2023-11-29 05:24:18,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:24:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:18,599 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:18,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 05:24:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:18,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:24:18,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:19,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:24:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281261096] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:24:20,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:24:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:24:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590682974] [2023-11-29 05:24:20,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:24:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:24:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:24:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:24:20,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:24:20,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 306 transitions, 3870 flow. Second operand has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:20,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:24:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:24:20,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:24:23,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:24:24,443 INFO L124 PetriNetUnfolderBase]: 609/1275 cut-off events. [2023-11-29 05:24:24,443 INFO L125 PetriNetUnfolderBase]: For 26414/26427 co-relation queries the response was YES. [2023-11-29 05:24:24,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 1275 events. 609/1275 cut-off events. For 26414/26427 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8111 event pairs, 47 based on Foata normal form. 4/1267 useless extension candidates. Maximal degree in co-relation 9114. Up to 953 conditions per place. [2023-11-29 05:24:24,456 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 253 selfloop transitions, 97 changer transitions 7/363 dead transitions. [2023-11-29 05:24:24,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 363 transitions, 5461 flow [2023-11-29 05:24:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:24:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 05:24:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 557 transitions. [2023-11-29 05:24:24,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491841491841492 [2023-11-29 05:24:24,458 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 557 transitions. [2023-11-29 05:24:24,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 557 transitions. [2023-11-29 05:24:24,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:24:24,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 557 transitions. [2023-11-29 05:24:24,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 21.423076923076923) internal successors, (557), 26 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:24,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:24,460 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:24,460 INFO L175 Difference]: Start difference. First operand has 308 places, 306 transitions, 3870 flow. Second operand 26 states and 557 transitions. [2023-11-29 05:24:24,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 363 transitions, 5461 flow [2023-11-29 05:24:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 363 transitions, 5170 flow, removed 63 selfloop flow, removed 22 redundant places. [2023-11-29 05:24:24,584 INFO L231 Difference]: Finished difference. Result has 312 places, 323 transitions, 4408 flow [2023-11-29 05:24:24,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4408, PETRI_PLACES=312, PETRI_TRANSITIONS=323} [2023-11-29 05:24:24,585 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 277 predicate places. [2023-11-29 05:24:24,585 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 323 transitions, 4408 flow [2023-11-29 05:24:24,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:24:24,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:24:24,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:24,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 05:24:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:24,785 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:24:24,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1279651318, now seen corresponding path program 20 times [2023-11-29 05:24:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827567840] [2023-11-29 05:24:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:25,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:25,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827567840] [2023-11-29 05:24:25,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827567840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:25,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027584501] [2023-11-29 05:24:25,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:24:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:25,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:25,650 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:25,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 05:24:25,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:24:25,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:24:25,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:24:25,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:24:26,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:25:19,867 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse2 (* 4294967296 (div c_~x_1~0 4294967296))) (.cse3 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296))) (and (forall ((v_z_265 Int)) (or (< v_z_265 .cse0) (let ((.cse1 (* 2 v_z_265))) (< (+ c_~x_2~0 .cse1 .cse2) (+ (* (div (+ c_~x_2~0 .cse1) 4294967296) 4294967296) c_~x_1~0 3))) (< .cse3 v_z_265))) (forall ((v_z_265 Int)) (or (< v_z_265 .cse0) (let ((.cse4 (* 2 v_z_265))) (< (+ (* (div (+ c_~x_2~0 .cse4) 4294967296) 4294967296) c_~x_1~0) (+ c_~x_2~0 4294967295 .cse4 .cse2))) (< .cse3 v_z_265))) (forall ((v_z_265 Int)) (let ((.cse5 (* 2 v_z_265))) (let ((.cse6 (* (div (+ c_~x_2~0 .cse5) 4294967296) 4294967296))) (or (< v_z_265 .cse0) (< (+ c_~x_2~0 .cse5 .cse2 4294967293) (+ .cse6 c_~x_1~0)) (< (+ .cse6 c_~x_1~0 1) (+ c_~x_2~0 .cse5 .cse2)) (< .cse3 v_z_265))))))) is different from false [2023-11-29 05:25:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:25:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027584501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:25:19,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:25:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:25:19,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964065816] [2023-11-29 05:25:19,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:25:19,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:25:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:25:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:25:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=256, Unknown=13, NotChecked=34, Total=380 [2023-11-29 05:25:19,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:25:19,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 323 transitions, 4408 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:25:19,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:25:19,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:25:19,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:25:56,709 INFO L124 PetriNetUnfolderBase]: 685/1441 cut-off events. [2023-11-29 05:25:56,709 INFO L125 PetriNetUnfolderBase]: For 38444/38459 co-relation queries the response was YES. [2023-11-29 05:25:56,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10828 conditions, 1441 events. 685/1441 cut-off events. For 38444/38459 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9457 event pairs, 43 based on Foata normal form. 9/1438 useless extension candidates. Maximal degree in co-relation 10722. Up to 1055 conditions per place. [2023-11-29 05:25:56,724 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 296 selfloop transitions, 84 changer transitions 10/396 dead transitions. [2023-11-29 05:25:56,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 396 transitions, 6181 flow [2023-11-29 05:25:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:25:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 05:25:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 500 transitions. [2023-11-29 05:25:56,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6587615283267457 [2023-11-29 05:25:56,725 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 500 transitions. [2023-11-29 05:25:56,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 500 transitions. [2023-11-29 05:25:56,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:25:56,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 500 transitions. [2023-11-29 05:25:56,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 21.73913043478261) internal successors, (500), 23 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:25:56,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:25:56,727 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:25:56,728 INFO L175 Difference]: Start difference. First operand has 312 places, 323 transitions, 4408 flow. Second operand 23 states and 500 transitions. [2023-11-29 05:25:56,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 396 transitions, 6181 flow [2023-11-29 05:25:56,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 396 transitions, 5660 flow, removed 211 selfloop flow, removed 22 redundant places. [2023-11-29 05:25:56,899 INFO L231 Difference]: Finished difference. Result has 318 places, 351 transitions, 4791 flow [2023-11-29 05:25:56,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4791, PETRI_PLACES=318, PETRI_TRANSITIONS=351} [2023-11-29 05:25:56,900 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 283 predicate places. [2023-11-29 05:25:56,900 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 351 transitions, 4791 flow [2023-11-29 05:25:56,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:25:56,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:25:56,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:25:56,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 05:25:57,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 05:25:57,101 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:25:57,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:25:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1628867387, now seen corresponding path program 21 times [2023-11-29 05:25:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:25:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538828335] [2023-11-29 05:25:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:25:57,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:25:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:25:58,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:25:58,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538828335] [2023-11-29 05:25:58,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538828335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:25:58,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404327164] [2023-11-29 05:25:58,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:25:58,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:25:58,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:25:58,044 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:25:58,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 05:25:58,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 05:25:58,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:25:58,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:25:58,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:25:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:25:58,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:26:03,473 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ 2 c_thread1Thread1of1ForFork0_~i~0) 4294967296)) (.cse5 (mod c_~x_2~0 4294967296)) (.cse2 (* (div c_~x_2~0 4294967296) 4294967296)) (.cse6 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse3 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse4 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296))) (and (or (forall ((v_z_271 Int)) (or (let ((.cse1 (* 2 v_z_271))) (< (+ c_~x_2~0 .cse0 (* (div (+ c_~x_1~0 .cse1) 4294967296) 4294967296)) (+ c_~x_1~0 .cse1 .cse2 1))) (< v_z_271 .cse3) (< .cse4 v_z_271))) (< 4294967294 (+ .cse5 .cse6))) (forall ((v_z_271 Int)) (or (let ((.cse7 (* 2 v_z_271))) (< (+ c_~x_1~0 .cse7 .cse2) (+ c_~x_2~0 2 .cse6 (* (div (+ c_~x_1~0 .cse7) 4294967296) 4294967296)))) (< v_z_271 .cse3) (< .cse4 v_z_271))) (forall ((v_z_271 Int)) (or (let ((.cse8 (* 2 v_z_271))) (< (+ c_~x_2~0 .cse0 (* (div (+ c_~x_1~0 .cse8) 4294967296) 4294967296)) (+ c_~x_1~0 .cse8 4294967297 .cse2))) (< v_z_271 .cse3) (< .cse4 v_z_271))) (or (< (+ .cse0 .cse5) 4294967296) (forall ((v_z_271 Int)) (or (let ((.cse9 (* 2 v_z_271))) (< (+ c_~x_1~0 .cse9 4294967294 .cse2) (+ c_~x_2~0 .cse6 (* (div (+ c_~x_1~0 .cse9) 4294967296) 4294967296)))) (< v_z_271 .cse3) (< .cse4 v_z_271)))))) is different from false [2023-11-29 05:26:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 05:26:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404327164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:26:03,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:26:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-11-29 05:26:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837170818] [2023-11-29 05:26:03,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:26:03,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:26:03,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:26:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:26:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=297, Unknown=1, NotChecked=36, Total=420 [2023-11-29 05:26:03,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:26:03,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 351 transitions, 4791 flow. Second operand has 21 states, 21 states have (on average 18.666666666666668) internal successors, (392), 21 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:26:03,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:26:03,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:26:03,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:26:11,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:26:14,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:26:15,503 INFO L124 PetriNetUnfolderBase]: 719/1500 cut-off events. [2023-11-29 05:26:15,503 INFO L125 PetriNetUnfolderBase]: For 42065/42081 co-relation queries the response was YES. [2023-11-29 05:26:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11647 conditions, 1500 events. 719/1500 cut-off events. For 42065/42081 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9872 event pairs, 47 based on Foata normal form. 8/1498 useless extension candidates. Maximal degree in co-relation 11537. Up to 1121 conditions per place. [2023-11-29 05:26:15,518 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 309 selfloop transitions, 87 changer transitions 10/412 dead transitions. [2023-11-29 05:26:15,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 412 transitions, 6662 flow [2023-11-29 05:26:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:26:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 05:26:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 492 transitions. [2023-11-29 05:26:15,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6482213438735178 [2023-11-29 05:26:15,519 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 492 transitions. [2023-11-29 05:26:15,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 492 transitions. [2023-11-29 05:26:15,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:26:15,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 492 transitions. [2023-11-29 05:26:15,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 21.391304347826086) internal successors, (492), 23 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:26:15,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:26:15,522 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:26:15,522 INFO L175 Difference]: Start difference. First operand has 318 places, 351 transitions, 4791 flow. Second operand 23 states and 492 transitions. [2023-11-29 05:26:15,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 412 transitions, 6662 flow [2023-11-29 05:26:15,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 412 transitions, 6270 flow, removed 171 selfloop flow, removed 14 redundant places. [2023-11-29 05:26:15,734 INFO L231 Difference]: Finished difference. Result has 331 places, 373 transitions, 5373 flow [2023-11-29 05:26:15,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5373, PETRI_PLACES=331, PETRI_TRANSITIONS=373} [2023-11-29 05:26:15,735 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 296 predicate places. [2023-11-29 05:26:15,735 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 373 transitions, 5373 flow [2023-11-29 05:26:15,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.666666666666668) internal successors, (392), 21 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:26:15,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:26:15,735 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:26:15,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 05:26:15,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 05:26:15,936 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:26:15,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:26:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1619452387, now seen corresponding path program 5 times [2023-11-29 05:26:15,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:26:15,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158081364] [2023-11-29 05:26:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:26:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:26:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:26:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158081364] [2023-11-29 05:26:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158081364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:26:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139839201] [2023-11-29 05:26:16,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:26:16,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:26:16,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:26:16,122 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:26:16,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 05:26:16,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 05:26:16,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:26:16,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:26:16,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:26:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:26:17,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:26:30,001 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~x_1~0 4294967296))) (let ((.cse0 (+ .cse7 4294967296)) (.cse2 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse1 (+ .cse4 v_z_278)) (.cse3 (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)))) (or (< 4294967295 v_z_278) (= .cse0 .cse1) (< .cse2 .cse3) (< .cse1 4294967296) (< .cse3 0)))) (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse5 (+ .cse4 v_z_278)) (.cse6 (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)))) (or (< 4294967295 v_z_278) (< v_z_278 0) (= .cse0 .cse5) (< .cse2 .cse6) (= .cse7 .cse5) (< .cse6 0)))) (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse8 (+ .cse4 v_z_278)) (.cse9 (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)))) (or (< 4294967295 .cse8) (< v_z_278 0) (< .cse2 .cse9) (= .cse7 .cse8) (< .cse9 0))))))) is different from false [2023-11-29 05:26:46,837 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse0 (+ .cse2 v_z_278))) (or (< 4294967295 .cse0) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 .cse0)))) (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse3 (+ .cse2 v_z_278))) (or (< 4294967295 v_z_278) (< v_z_278 0) (= (+ .cse1 4294967296) .cse3) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 .cse3)))))) is different from false [2023-11-29 05:27:20,103 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse0 (+ .cse2 v_z_278))) (or (< 4294967295 .cse0) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 .cse0)))) (forall ((v_z_278 Int) (v_y_278 Int)) (or (< 4294967295 v_z_278) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 (+ .cse2 v_z_278)))))) is different from false [2023-11-29 05:27:24,184 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse0 (+ .cse2 v_z_278))) (or (< 4294967295 .cse0) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 .cse0)))) (forall ((v_z_278 Int) (v_y_278 Int)) (or (< 4294967295 v_z_278) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 (+ .cse2 v_z_278)))))) is different from true [2023-11-29 05:27:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:27:40,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139839201] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:27:40,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:27:40,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 19 [2023-11-29 05:27:40,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16565824] [2023-11-29 05:27:40,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:27:40,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:27:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:27:40,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:27:40,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=207, Unknown=6, NotChecked=96, Total=380 [2023-11-29 05:27:40,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:27:40,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 373 transitions, 5373 flow. Second operand has 20 states, 20 states have (on average 19.0) internal successors, (380), 20 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:27:40,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:27:40,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:27:40,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:27:44,553 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_278 Int) (v_y_278 Int)) (let ((.cse0 (+ .cse2 v_z_278))) (or (< 4294967295 .cse0) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 .cse0)))) (= c_~x_2~0 0) (= c_~x_1~0 0) (forall ((v_z_278 Int) (v_y_278 Int)) (or (< 4294967295 v_z_278) (< v_z_278 0) (not (= (+ (* 2863311531 v_z_278) (* v_y_278 4294967296)) 0)) (= .cse1 (+ .cse2 v_z_278)))))) is different from false [2023-11-29 05:27:48,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:27:52,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:27:56,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:28:00,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:28:04,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:28:08,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:28:11,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 05:28:13,855 INFO L124 PetriNetUnfolderBase]: 722/1516 cut-off events. [2023-11-29 05:28:13,855 INFO L125 PetriNetUnfolderBase]: For 42305/42321 co-relation queries the response was YES. [2023-11-29 05:28:13,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11869 conditions, 1516 events. 722/1516 cut-off events. For 42305/42321 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10062 event pairs, 109 based on Foata normal form. 5/1511 useless extension candidates. Maximal degree in co-relation 11753. Up to 1233 conditions per place. [2023-11-29 05:28:13,869 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 344 selfloop transitions, 33 changer transitions 22/405 dead transitions. [2023-11-29 05:28:13,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 405 transitions, 6511 flow [2023-11-29 05:28:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:28:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:28:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 325 transitions. [2023-11-29 05:28:13,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2023-11-29 05:28:13,870 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 325 transitions. [2023-11-29 05:28:13,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 325 transitions. [2023-11-29 05:28:13,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:28:13,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 325 transitions. [2023-11-29 05:28:13,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:13,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 33.0) internal successors, (528), 16 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:13,872 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 33.0) internal successors, (528), 16 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:13,872 INFO L175 Difference]: Start difference. First operand has 331 places, 373 transitions, 5373 flow. Second operand 15 states and 325 transitions. [2023-11-29 05:28:13,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 405 transitions, 6511 flow [2023-11-29 05:28:14,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 405 transitions, 6140 flow, removed 134 selfloop flow, removed 17 redundant places. [2023-11-29 05:28:14,084 INFO L231 Difference]: Finished difference. Result has 330 places, 370 transitions, 4970 flow [2023-11-29 05:28:14,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5004, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4970, PETRI_PLACES=330, PETRI_TRANSITIONS=370} [2023-11-29 05:28:14,085 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 295 predicate places. [2023-11-29 05:28:14,085 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 370 transitions, 4970 flow [2023-11-29 05:28:14,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.0) internal successors, (380), 20 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:14,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:28:14,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:14,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 05:28:14,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 05:28:14,286 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:28:14,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash -26530922, now seen corresponding path program 22 times [2023-11-29 05:28:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:14,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706905980] [2023-11-29 05:28:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:14,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:15,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706905980] [2023-11-29 05:28:15,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706905980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:15,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861139081] [2023-11-29 05:28:15,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:28:15,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:15,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:15,081 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:15,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 05:28:15,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:28:15,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:28:15,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:28:15,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:15,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:30:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:30:19,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861139081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:30:19,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:30:19,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:30:19,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965701823] [2023-11-29 05:30:19,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:30:19,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:30:19,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:30:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=280, Unknown=30, NotChecked=0, Total=380 [2023-11-29 05:30:19,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:30:19,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 370 transitions, 4970 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:19,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:19,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:30:19,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:31:02,431 INFO L124 PetriNetUnfolderBase]: 714/1508 cut-off events. [2023-11-29 05:31:02,432 INFO L125 PetriNetUnfolderBase]: For 38243/38265 co-relation queries the response was YES. [2023-11-29 05:31:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11282 conditions, 1508 events. 714/1508 cut-off events. For 38243/38265 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9979 event pairs, 110 based on Foata normal form. 11/1509 useless extension candidates. Maximal degree in co-relation 11166. Up to 1222 conditions per place. [2023-11-29 05:31:02,452 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 335 selfloop transitions, 55 changer transitions 8/404 dead transitions. [2023-11-29 05:31:02,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 404 transitions, 6103 flow [2023-11-29 05:31:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:31:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:31:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 404 transitions. [2023-11-29 05:31:02,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6443381180223285 [2023-11-29 05:31:02,455 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 404 transitions. [2023-11-29 05:31:02,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 404 transitions. [2023-11-29 05:31:02,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:31:02,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 404 transitions. [2023-11-29 05:31:02,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.263157894736842) internal successors, (404), 19 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:02,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:02,457 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:02,457 INFO L175 Difference]: Start difference. First operand has 330 places, 370 transitions, 4970 flow. Second operand 19 states and 404 transitions. [2023-11-29 05:31:02,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 404 transitions, 6103 flow [2023-11-29 05:31:02,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 404 transitions, 5959 flow, removed 33 selfloop flow, removed 13 redundant places. [2023-11-29 05:31:02,727 INFO L231 Difference]: Finished difference. Result has 334 places, 374 transitions, 5123 flow [2023-11-29 05:31:02,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5123, PETRI_PLACES=334, PETRI_TRANSITIONS=374} [2023-11-29 05:31:02,728 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 299 predicate places. [2023-11-29 05:31:02,728 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 374 transitions, 5123 flow [2023-11-29 05:31:02,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:02,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:31:02,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:02,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 05:31:02,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 05:31:02,929 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:31:02,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:02,930 INFO L85 PathProgramCache]: Analyzing trace with hash -827789704, now seen corresponding path program 23 times [2023-11-29 05:31:02,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860694975] [2023-11-29 05:31:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:02,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860694975] [2023-11-29 05:31:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860694975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:31:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685022598] [2023-11-29 05:31:03,712 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:31:03,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:03,713 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:03,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 05:31:03,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:31:03,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:31:03,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:31:03,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:04,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:05,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685022598] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:05,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:31:05,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-11-29 05:31:05,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099374243] [2023-11-29 05:31:05,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:05,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:31:05,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:05,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:31:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:31:05,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:31:05,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 374 transitions, 5123 flow. Second operand has 21 states, 21 states have (on average 18.666666666666668) internal successors, (392), 21 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:05,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:31:05,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:31:05,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:31:14,111 INFO L124 PetriNetUnfolderBase]: 743/1569 cut-off events. [2023-11-29 05:31:14,111 INFO L125 PetriNetUnfolderBase]: For 43239/43258 co-relation queries the response was YES. [2023-11-29 05:31:14,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11924 conditions, 1569 events. 743/1569 cut-off events. For 43239/43258 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10461 event pairs, 97 based on Foata normal form. 8/1567 useless extension candidates. Maximal degree in co-relation 11805. Up to 1062 conditions per place. [2023-11-29 05:31:14,127 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 336 selfloop transitions, 98 changer transitions 24/464 dead transitions. [2023-11-29 05:31:14,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 464 transitions, 7221 flow [2023-11-29 05:31:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:31:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 05:31:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 706 transitions. [2023-11-29 05:31:14,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483011937557392 [2023-11-29 05:31:14,129 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 706 transitions. [2023-11-29 05:31:14,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 706 transitions. [2023-11-29 05:31:14,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:31:14,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 706 transitions. [2023-11-29 05:31:14,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 21.393939393939394) internal successors, (706), 33 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:14,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 33.0) internal successors, (1122), 34 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:14,131 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 33.0) internal successors, (1122), 34 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:14,131 INFO L175 Difference]: Start difference. First operand has 334 places, 374 transitions, 5123 flow. Second operand 33 states and 706 transitions. [2023-11-29 05:31:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 464 transitions, 7221 flow [2023-11-29 05:31:14,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 464 transitions, 7063 flow, removed 56 selfloop flow, removed 14 redundant places. [2023-11-29 05:31:14,364 INFO L231 Difference]: Finished difference. Result has 360 places, 398 transitions, 5883 flow [2023-11-29 05:31:14,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5883, PETRI_PLACES=360, PETRI_TRANSITIONS=398} [2023-11-29 05:31:14,365 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 325 predicate places. [2023-11-29 05:31:14,365 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 398 transitions, 5883 flow [2023-11-29 05:31:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.666666666666668) internal successors, (392), 21 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:14,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:31:14,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:14,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 05:31:14,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 05:31:14,565 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:31:14,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash -616955717, now seen corresponding path program 6 times [2023-11-29 05:31:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730042670] [2023-11-29 05:31:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:14,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730042670] [2023-11-29 05:31:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730042670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:31:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158092835] [2023-11-29 05:31:14,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:31:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:14,751 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:14,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 05:31:14,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:31:14,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:31:14,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 05:31:14,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:23,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:39,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:31:39,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158092835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:39,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:31:39,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2023-11-29 05:31:39,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360414807] [2023-11-29 05:31:39,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:39,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:31:39,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:31:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=346, Unknown=4, NotChecked=0, Total=462 [2023-11-29 05:31:39,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:31:39,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 398 transitions, 5883 flow. Second operand has 22 states, 22 states have (on average 18.818181818181817) internal successors, (414), 22 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:39,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:31:39,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:31:39,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:32:21,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:32:31,048 INFO L124 PetriNetUnfolderBase]: 971/1987 cut-off events. [2023-11-29 05:32:31,048 INFO L125 PetriNetUnfolderBase]: For 77456/77476 co-relation queries the response was YES. [2023-11-29 05:32:31,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16653 conditions, 1987 events. 971/1987 cut-off events. For 77456/77476 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13639 event pairs, 60 based on Foata normal form. 22/1999 useless extension candidates. Maximal degree in co-relation 16526. Up to 755 conditions per place. [2023-11-29 05:32:31,073 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 250 selfloop transitions, 288 changer transitions 13/557 dead transitions. [2023-11-29 05:32:31,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 557 transitions, 9630 flow [2023-11-29 05:32:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:32:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 05:32:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 627 transitions. [2023-11-29 05:32:31,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2023-11-29 05:32:31,074 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 627 transitions. [2023-11-29 05:32:31,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 627 transitions. [2023-11-29 05:32:31,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:32:31,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 627 transitions. [2023-11-29 05:32:31,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 21.620689655172413) internal successors, (627), 29 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:31,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:31,077 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:31,078 INFO L175 Difference]: Start difference. First operand has 360 places, 398 transitions, 5883 flow. Second operand 29 states and 627 transitions. [2023-11-29 05:32:31,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 557 transitions, 9630 flow [2023-11-29 05:32:31,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 557 transitions, 8479 flow, removed 544 selfloop flow, removed 13 redundant places. [2023-11-29 05:32:31,471 INFO L231 Difference]: Finished difference. Result has 376 places, 481 transitions, 7808 flow [2023-11-29 05:32:31,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5258, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7808, PETRI_PLACES=376, PETRI_TRANSITIONS=481} [2023-11-29 05:32:31,472 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 341 predicate places. [2023-11-29 05:32:31,472 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 481 transitions, 7808 flow [2023-11-29 05:32:31,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.818181818181817) internal successors, (414), 22 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:31,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:32:31,472 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:31,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 05:32:31,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 05:32:31,672 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:32:31,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2131315867, now seen corresponding path program 7 times [2023-11-29 05:32:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175508316] [2023-11-29 05:32:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:31,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:31,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175508316] [2023-11-29 05:32:31,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175508316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:31,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763604756] [2023-11-29 05:32:31,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:32:31,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:31,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:31,870 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:31,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 05:32:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:32,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:32:32,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:37,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763604756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:32:37,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:32:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2023-11-29 05:32:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248451473] [2023-11-29 05:32:37,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:32:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:32:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:32:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:32:37,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:32:37,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 481 transitions, 7808 flow. Second operand has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:37,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:32:37,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:32:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:32:46,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:32:47,805 INFO L124 PetriNetUnfolderBase]: 979/1992 cut-off events. [2023-11-29 05:32:47,805 INFO L125 PetriNetUnfolderBase]: For 49887/49901 co-relation queries the response was YES. [2023-11-29 05:32:47,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16325 conditions, 1992 events. 979/1992 cut-off events. For 49887/49901 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13668 event pairs, 135 based on Foata normal form. 8/2000 useless extension candidates. Maximal degree in co-relation 16196. Up to 1588 conditions per place. [2023-11-29 05:32:47,826 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 428 selfloop transitions, 66 changer transitions 24/524 dead transitions. [2023-11-29 05:32:47,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 524 transitions, 9323 flow [2023-11-29 05:32:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:32:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 05:32:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 369 transitions. [2023-11-29 05:32:47,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577540106951871 [2023-11-29 05:32:47,827 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 369 transitions. [2023-11-29 05:32:47,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 369 transitions. [2023-11-29 05:32:47,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:32:47,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 369 transitions. [2023-11-29 05:32:47,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.705882352941178) internal successors, (369), 17 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:47,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:47,829 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:47,829 INFO L175 Difference]: Start difference. First operand has 376 places, 481 transitions, 7808 flow. Second operand 17 states and 369 transitions. [2023-11-29 05:32:47,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 524 transitions, 9323 flow [2023-11-29 05:32:48,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 524 transitions, 8863 flow, removed 163 selfloop flow, removed 22 redundant places. [2023-11-29 05:32:48,180 INFO L231 Difference]: Finished difference. Result has 372 places, 481 transitions, 7634 flow [2023-11-29 05:32:48,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7400, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7634, PETRI_PLACES=372, PETRI_TRANSITIONS=481} [2023-11-29 05:32:48,181 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 337 predicate places. [2023-11-29 05:32:48,181 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 481 transitions, 7634 flow [2023-11-29 05:32:48,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:32:48,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:32:48,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:48,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 05:32:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 05:32:48,382 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:32:48,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:48,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1360703323, now seen corresponding path program 24 times [2023-11-29 05:32:48,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:48,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521074355] [2023-11-29 05:32:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:48,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:49,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521074355] [2023-11-29 05:32:49,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521074355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280538284] [2023-11-29 05:32:49,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:32:49,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:49,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:49,326 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:49,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 05:32:49,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:32:49,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:32:49,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:32:49,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:32:50,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:55,926 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod (+ 2 c_thread1Thread1of1ForFork0_~i~0) 4294967296)) (.cse4 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse2 (* (div c_~x_2~0 4294967296) 4294967296)) (.cse3 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse0 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296))) (and (forall ((v_z_310 Int)) (or (< .cse0 v_z_310) (let ((.cse1 (* 2 v_z_310))) (< (+ .cse1 c_~x_1~0 .cse2) (+ c_~x_2~0 (* (div (+ .cse1 c_~x_1~0) 4294967296) 4294967296) 2 .cse3))) (< v_z_310 .cse4))) (forall ((v_z_314 Int)) (or (< v_z_314 .cse4) (< .cse0 v_z_314) (let ((.cse5 (* 2 v_z_314))) (< (+ (* (div (+ .cse5 c_~x_1~0) 4294967296) 4294967296) c_~x_2~0 .cse6) (+ .cse5 c_~x_1~0 4294967297 .cse2))))) (forall ((v_z_312 Int)) (let ((.cse8 (* 2 v_z_312))) (let ((.cse7 (* (div (+ c_~x_1~0 .cse8) 4294967296) 4294967296))) (or (< (+ c_~x_2~0 .cse6 .cse7) (+ c_~x_1~0 .cse8 .cse2 1)) (< v_z_312 .cse4) (< (+ c_~x_1~0 4294967294 .cse8 .cse2) (+ c_~x_2~0 .cse7 .cse3)) (< .cse0 v_z_312))))))) is different from false [2023-11-29 05:33:00,047 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* (div c_~x_2~0 4294967296) 4294967296)) (.cse2 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse3 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296))) (and (forall ((v_z_314 Int)) (or (let ((.cse0 (* 2 v_z_314))) (< (+ (* (div (+ .cse0 c_~x_1~0) 4294967296) 4294967296) c_~x_2~0) (+ .cse0 c_~x_1~0 4294967295 .cse1))) (< v_z_314 .cse2) (< .cse3 v_z_314))) (forall ((v_z_310 Int)) (or (< .cse3 v_z_310) (let ((.cse4 (* 2 v_z_310))) (< (+ .cse4 c_~x_1~0 .cse1) (+ c_~x_2~0 (* (div (+ .cse4 c_~x_1~0) 4294967296) 4294967296) 3))) (< v_z_310 .cse2))) (forall ((v_z_312 Int)) (let ((.cse5 (* 2 v_z_312))) (let ((.cse6 (* (div (+ c_~x_1~0 .cse5) 4294967296) 4294967296))) (or (< (+ c_~x_1~0 .cse5 .cse1 4294967293) (+ c_~x_2~0 .cse6)) (< (+ c_~x_2~0 .cse6 1) (+ c_~x_1~0 .cse5 .cse1)) (< v_z_312 .cse2) (< .cse3 v_z_312))))))) is different from false [2023-11-29 05:33:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 05:33:00,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280538284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:00,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:00,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:33:00,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967816298] [2023-11-29 05:33:00,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:00,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:33:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:00,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:33:00,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=245, Unknown=2, NotChecked=66, Total=380 [2023-11-29 05:33:00,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:33:00,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 481 transitions, 7634 flow. Second operand has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:00,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:33:00,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:33:00,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:33:02,688 INFO L124 PetriNetUnfolderBase]: 965/1973 cut-off events. [2023-11-29 05:33:02,688 INFO L125 PetriNetUnfolderBase]: For 40579/40591 co-relation queries the response was YES. [2023-11-29 05:33:02,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15651 conditions, 1973 events. 965/1973 cut-off events. For 40579/40591 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 13519 event pairs, 144 based on Foata normal form. 4/1977 useless extension candidates. Maximal degree in co-relation 15524. Up to 1698 conditions per place. [2023-11-29 05:33:02,714 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 450 selfloop transitions, 48 changer transitions 8/512 dead transitions. [2023-11-29 05:33:02,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 512 transitions, 8975 flow [2023-11-29 05:33:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:33:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:33:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 399 transitions. [2023-11-29 05:33:02,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2023-11-29 05:33:02,715 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 399 transitions. [2023-11-29 05:33:02,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 399 transitions. [2023-11-29 05:33:02,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:33:02,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 399 transitions. [2023-11-29 05:33:02,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:02,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:02,717 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:02,718 INFO L175 Difference]: Start difference. First operand has 372 places, 481 transitions, 7634 flow. Second operand 19 states and 399 transitions. [2023-11-29 05:33:02,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 512 transitions, 8975 flow [2023-11-29 05:33:03,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 512 transitions, 8876 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-11-29 05:33:03,075 INFO L231 Difference]: Finished difference. Result has 379 places, 486 transitions, 7838 flow [2023-11-29 05:33:03,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7535, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7838, PETRI_PLACES=379, PETRI_TRANSITIONS=486} [2023-11-29 05:33:03,076 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 344 predicate places. [2023-11-29 05:33:03,076 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 486 transitions, 7838 flow [2023-11-29 05:33:03,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:03,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:33:03,077 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:03,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 05:33:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:03,277 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:03,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash 268842563, now seen corresponding path program 8 times [2023-11-29 05:33:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843255147] [2023-11-29 05:33:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:03,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:03,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843255147] [2023-11-29 05:33:03,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843255147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:03,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866053917] [2023-11-29 05:33:03,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:33:03,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:03,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:03,492 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:03,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 05:33:03,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:33:03,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:33:03,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 05:33:03,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:09,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:25,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866053917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:25,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:25,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2023-11-29 05:33:25,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722063165] [2023-11-29 05:33:25,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:25,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:33:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:25,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:33:25,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=356, Unknown=5, NotChecked=0, Total=462 [2023-11-29 05:33:25,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:33:25,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 486 transitions, 7838 flow. Second operand has 22 states, 22 states have (on average 18.818181818181817) internal successors, (414), 22 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:25,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:33:25,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:33:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:33:37,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:33:42,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:33:47,615 INFO L124 PetriNetUnfolderBase]: 994/2022 cut-off events. [2023-11-29 05:33:47,615 INFO L125 PetriNetUnfolderBase]: For 41343/41357 co-relation queries the response was YES. [2023-11-29 05:33:47,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16186 conditions, 2022 events. 994/2022 cut-off events. For 41343/41357 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13895 event pairs, 87 based on Foata normal form. 10/2032 useless extension candidates. Maximal degree in co-relation 16055. Up to 1133 conditions per place. [2023-11-29 05:33:47,662 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 319 selfloop transitions, 224 changer transitions 12/561 dead transitions. [2023-11-29 05:33:47,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 561 transitions, 9782 flow [2023-11-29 05:33:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 05:33:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 05:33:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 602 transitions. [2023-11-29 05:33:47,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2023-11-29 05:33:47,664 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 602 transitions. [2023-11-29 05:33:47,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 602 transitions. [2023-11-29 05:33:47,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:33:47,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 602 transitions. [2023-11-29 05:33:47,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 21.5) internal successors, (602), 28 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:47,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 33.0) internal successors, (957), 29 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:47,666 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 33.0) internal successors, (957), 29 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:47,666 INFO L175 Difference]: Start difference. First operand has 379 places, 486 transitions, 7838 flow. Second operand 28 states and 602 transitions. [2023-11-29 05:33:47,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 561 transitions, 9782 flow [2023-11-29 05:33:48,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 561 transitions, 9585 flow, removed 78 selfloop flow, removed 13 redundant places. [2023-11-29 05:33:48,185 INFO L231 Difference]: Finished difference. Result has 402 places, 499 transitions, 8685 flow [2023-11-29 05:33:48,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7659, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8685, PETRI_PLACES=402, PETRI_TRANSITIONS=499} [2023-11-29 05:33:48,186 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 367 predicate places. [2023-11-29 05:33:48,186 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 499 transitions, 8685 flow [2023-11-29 05:33:48,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.818181818181817) internal successors, (414), 22 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:48,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:33:48,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:48,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 05:33:48,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 05:33:48,388 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:48,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1364729344, now seen corresponding path program 25 times [2023-11-29 05:33:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054714615] [2023-11-29 05:33:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:49,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054714615] [2023-11-29 05:33:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054714615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:49,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730862281] [2023-11-29 05:33:49,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:33:49,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:49,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:49,387 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:49,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 05:33:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:50,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:33:50,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:51,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:52,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730862281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:52,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:52,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:33:52,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104554359] [2023-11-29 05:33:52,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:33:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:52,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:33:52,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:33:52,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:33:52,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 499 transitions, 8685 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:52,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:33:52,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:33:52,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:33:57,756 INFO L124 PetriNetUnfolderBase]: 1042/2130 cut-off events. [2023-11-29 05:33:57,756 INFO L125 PetriNetUnfolderBase]: For 56813/56823 co-relation queries the response was YES. [2023-11-29 05:33:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18492 conditions, 2130 events. 1042/2130 cut-off events. For 56813/56823 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14771 event pairs, 134 based on Foata normal form. 8/2138 useless extension candidates. Maximal degree in co-relation 18353. Up to 1480 conditions per place. [2023-11-29 05:33:57,780 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 425 selfloop transitions, 123 changer transitions 12/566 dead transitions. [2023-11-29 05:33:57,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 566 transitions, 11065 flow [2023-11-29 05:33:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:33:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 05:33:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 561 transitions. [2023-11-29 05:33:57,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-11-29 05:33:57,782 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 561 transitions. [2023-11-29 05:33:57,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 561 transitions. [2023-11-29 05:33:57,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:33:57,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 561 transitions. [2023-11-29 05:33:57,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 21.576923076923077) internal successors, (561), 26 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:57,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:57,785 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:57,785 INFO L175 Difference]: Start difference. First operand has 402 places, 499 transitions, 8685 flow. Second operand 26 states and 561 transitions. [2023-11-29 05:33:57,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 566 transitions, 11065 flow [2023-11-29 05:33:58,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 566 transitions, 10707 flow, removed 141 selfloop flow, removed 17 redundant places. [2023-11-29 05:33:58,206 INFO L231 Difference]: Finished difference. Result has 416 places, 519 transitions, 9527 flow [2023-11-29 05:33:58,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8341, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=9527, PETRI_PLACES=416, PETRI_TRANSITIONS=519} [2023-11-29 05:33:58,207 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 381 predicate places. [2023-11-29 05:33:58,207 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 519 transitions, 9527 flow [2023-11-29 05:33:58,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:33:58,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:33:58,208 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:58,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 05:33:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 05:33:58,408 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:33:58,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:58,409 INFO L85 PathProgramCache]: Analyzing trace with hash -899051805, now seen corresponding path program 26 times [2023-11-29 05:33:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:58,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018256493] [2023-11-29 05:33:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:33:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018256493] [2023-11-29 05:33:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018256493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133870475] [2023-11-29 05:33:59,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:33:59,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:59,490 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:59,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 05:33:59,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:33:59,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:33:59,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:33:59,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:00,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133870475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:34:05,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:34:05,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-11-29 05:34:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59959655] [2023-11-29 05:34:05,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:05,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:34:05,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:34:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=378, Unknown=1, NotChecked=0, Total=462 [2023-11-29 05:34:05,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:34:05,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 519 transitions, 9527 flow. Second operand has 22 states, 22 states have (on average 18.636363636363637) internal successors, (410), 22 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:05,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:34:05,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:34:05,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:34:10,615 INFO L124 PetriNetUnfolderBase]: 1037/2121 cut-off events. [2023-11-29 05:34:10,615 INFO L125 PetriNetUnfolderBase]: For 58175/58187 co-relation queries the response was YES. [2023-11-29 05:34:10,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18625 conditions, 2121 events. 1037/2121 cut-off events. For 58175/58187 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14760 event pairs, 147 based on Foata normal form. 6/2127 useless extension candidates. Maximal degree in co-relation 18479. Up to 1696 conditions per place. [2023-11-29 05:34:10,641 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 436 selfloop transitions, 107 changer transitions 11/560 dead transitions. [2023-11-29 05:34:10,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 560 transitions, 10991 flow [2023-11-29 05:34:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 05:34:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 05:34:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 569 transitions. [2023-11-29 05:34:10,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6386083052749719 [2023-11-29 05:34:10,642 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 569 transitions. [2023-11-29 05:34:10,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 569 transitions. [2023-11-29 05:34:10,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:34:10,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 569 transitions. [2023-11-29 05:34:10,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 21.074074074074073) internal successors, (569), 27 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:10,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:10,644 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:10,644 INFO L175 Difference]: Start difference. First operand has 416 places, 519 transitions, 9527 flow. Second operand 27 states and 569 transitions. [2023-11-29 05:34:10,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 560 transitions, 10991 flow [2023-11-29 05:34:11,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 560 transitions, 10442 flow, removed 225 selfloop flow, removed 20 redundant places. [2023-11-29 05:34:11,178 INFO L231 Difference]: Finished difference. Result has 423 places, 522 transitions, 9329 flow [2023-11-29 05:34:11,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8977, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9329, PETRI_PLACES=423, PETRI_TRANSITIONS=522} [2023-11-29 05:34:11,179 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 388 predicate places. [2023-11-29 05:34:11,179 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 522 transitions, 9329 flow [2023-11-29 05:34:11,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.636363636363637) internal successors, (410), 22 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:11,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:34:11,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:11,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 05:34:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:11,380 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:34:11,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 933151628, now seen corresponding path program 27 times [2023-11-29 05:34:11,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:11,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780903525] [2023-11-29 05:34:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780903525] [2023-11-29 05:34:12,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780903525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70367481] [2023-11-29 05:34:12,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:34:12,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:12,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:12,040 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:12,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 05:34:12,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 05:34:12,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:34:12,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:34:12,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:12,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:35:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70367481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:35:06,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:35:06,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:35:06,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720780909] [2023-11-29 05:35:06,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:35:06,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:35:06,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:06,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:35:06,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=282, Unknown=13, NotChecked=0, Total=380 [2023-11-29 05:35:06,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:35:06,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 522 transitions, 9329 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:06,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:06,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:35:06,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:26,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:35:32,020 INFO L124 PetriNetUnfolderBase]: 1094/2225 cut-off events. [2023-11-29 05:35:32,020 INFO L125 PetriNetUnfolderBase]: For 63529/63541 co-relation queries the response was YES. [2023-11-29 05:35:32,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19964 conditions, 2225 events. 1094/2225 cut-off events. For 63529/63541 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 15529 event pairs, 148 based on Foata normal form. 7/2232 useless extension candidates. Maximal degree in co-relation 19817. Up to 1811 conditions per place. [2023-11-29 05:35:32,078 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 494 selfloop transitions, 76 changer transitions 11/587 dead transitions. [2023-11-29 05:35:32,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 587 transitions, 11959 flow [2023-11-29 05:35:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:35:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:35:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 452 transitions. [2023-11-29 05:35:32,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6522366522366523 [2023-11-29 05:35:32,079 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 452 transitions. [2023-11-29 05:35:32,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 452 transitions. [2023-11-29 05:35:32,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:32,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 452 transitions. [2023-11-29 05:35:32,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 21.523809523809526) internal successors, (452), 21 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:32,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:32,081 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:32,081 INFO L175 Difference]: Start difference. First operand has 423 places, 522 transitions, 9329 flow. Second operand 21 states and 452 transitions. [2023-11-29 05:35:32,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 587 transitions, 11959 flow [2023-11-29 05:35:32,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 587 transitions, 11654 flow, removed 69 selfloop flow, removed 23 redundant places. [2023-11-29 05:35:32,592 INFO L231 Difference]: Finished difference. Result has 427 places, 549 transitions, 10297 flow [2023-11-29 05:35:32,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9030, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=10297, PETRI_PLACES=427, PETRI_TRANSITIONS=549} [2023-11-29 05:35:32,593 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 392 predicate places. [2023-11-29 05:35:32,593 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 549 transitions, 10297 flow [2023-11-29 05:35:32,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:32,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:32,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:32,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 05:35:32,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:32,794 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:35:32,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2029038409, now seen corresponding path program 28 times [2023-11-29 05:35:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:32,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181207883] [2023-11-29 05:35:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:33,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:33,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181207883] [2023-11-29 05:35:33,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181207883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:33,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911907023] [2023-11-29 05:35:33,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:35:33,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:33,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:33,898 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:33,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 05:35:34,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:35:34,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:35:34,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:35:34,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:34,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:35:39,278 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse6 (mod (+ 2 c_thread1Thread1of1ForFork0_~i~0) 4294967296)) (.cse0 (* (div c_~x_2~0 4294967296) 4294967296)) (.cse4 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse2 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296))) (and (forall ((v_z_343 Int)) (or (let ((.cse1 (* 2 v_z_343))) (< (+ c_~x_1~0 .cse0 .cse1) (+ (* (div (+ c_~x_1~0 .cse1) 4294967296) 4294967296) c_~x_2~0 2 .cse2))) (< .cse3 v_z_343) (< v_z_343 .cse4))) (forall ((v_z_343 Int)) (or (< .cse3 v_z_343) (let ((.cse5 (* 2 v_z_343))) (< (+ (* (div (+ c_~x_1~0 .cse5) 4294967296) 4294967296) c_~x_2~0 .cse6) (+ c_~x_1~0 4294967297 .cse0 .cse5))) (< v_z_343 .cse4))) (forall ((v_z_343 Int)) (let ((.cse8 (* 2 v_z_343))) (let ((.cse7 (* (div (+ c_~x_1~0 .cse8) 4294967296) 4294967296))) (or (< .cse3 v_z_343) (< (+ .cse7 c_~x_2~0 .cse6) (+ c_~x_1~0 .cse0 .cse8 1)) (< (+ c_~x_1~0 4294967294 .cse0 .cse8) (+ .cse7 c_~x_2~0 .cse2)) (< v_z_343 .cse4))))) (or (forall ((v_z_343 Int)) (or (< .cse3 v_z_343) (let ((.cse9 (* 2 v_z_343))) (< (+ (* (div (+ c_~x_1~0 .cse9) 4294967296) 4294967296) c_~x_2~0 .cse6) (+ c_~x_1~0 .cse0 .cse9 1))) (< v_z_343 .cse4))) (< 4294967294 (+ (mod c_~x_2~0 4294967296) .cse2))))) is different from false [2023-11-29 05:35:43,427 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse2 (* (div c_~x_2~0 4294967296) 4294967296)) (.cse3 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1))) (and (forall ((v_z_343 Int)) (or (< .cse0 v_z_343) (let ((.cse1 (* 2 v_z_343))) (< (+ (* (div (+ c_~x_1~0 .cse1) 4294967296) 4294967296) c_~x_2~0) (+ c_~x_1~0 4294967295 .cse2 .cse1))) (< v_z_343 .cse3))) (forall ((v_z_343 Int)) (let ((.cse4 (* 2 v_z_343))) (let ((.cse5 (* (div (+ c_~x_1~0 .cse4) 4294967296) 4294967296))) (or (< .cse0 v_z_343) (< (+ c_~x_1~0 .cse2 .cse4 4294967293) (+ .cse5 c_~x_2~0)) (< (+ .cse5 c_~x_2~0 1) (+ c_~x_1~0 .cse2 .cse4)) (< v_z_343 .cse3))))) (or (< 4294967293 (mod c_~x_2~0 4294967296)) (forall ((v_z_343 Int)) (or (< .cse0 v_z_343) (let ((.cse6 (* 2 v_z_343))) (< (+ (* (div (+ c_~x_1~0 .cse6) 4294967296) 4294967296) c_~x_2~0 1) (+ c_~x_1~0 .cse2 .cse6))) (< v_z_343 .cse3)))) (forall ((v_z_343 Int)) (or (< .cse0 v_z_343) (let ((.cse7 (* 2 v_z_343))) (< (+ c_~x_1~0 .cse2 .cse7) (+ (* (div (+ c_~x_1~0 .cse7) 4294967296) 4294967296) c_~x_2~0 3))) (< v_z_343 .cse3))))) is different from false [2023-11-29 05:35:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 05:35:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911907023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:35:43,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:35:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-11-29 05:35:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217606050] [2023-11-29 05:35:43,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:35:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:35:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:35:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=261, Unknown=2, NotChecked=70, Total=420 [2023-11-29 05:35:43,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:35:43,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 549 transitions, 10297 flow. Second operand has 21 states, 21 states have (on average 18.714285714285715) internal successors, (393), 21 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:43,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:35:43,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:35:43,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:35:54,440 INFO L124 PetriNetUnfolderBase]: 1152/2363 cut-off events. [2023-11-29 05:35:54,440 INFO L125 PetriNetUnfolderBase]: For 83494/83506 co-relation queries the response was YES. [2023-11-29 05:35:54,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22320 conditions, 2363 events. 1152/2363 cut-off events. For 83494/83506 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 16797 event pairs, 148 based on Foata normal form. 8/2371 useless extension candidates. Maximal degree in co-relation 22168. Up to 1852 conditions per place. [2023-11-29 05:35:54,476 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 499 selfloop transitions, 100 changer transitions 10/615 dead transitions. [2023-11-29 05:35:54,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 615 transitions, 13261 flow [2023-11-29 05:35:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:35:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 05:35:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 430 transitions. [2023-11-29 05:35:54,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2023-11-29 05:35:54,477 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 430 transitions. [2023-11-29 05:35:54,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 430 transitions. [2023-11-29 05:35:54,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:35:54,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 430 transitions. [2023-11-29 05:35:54,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 21.5) internal successors, (430), 20 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:54,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 33.0) internal successors, (693), 21 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:54,479 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 33.0) internal successors, (693), 21 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:54,479 INFO L175 Difference]: Start difference. First operand has 427 places, 549 transitions, 10297 flow. Second operand 20 states and 430 transitions. [2023-11-29 05:35:54,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 615 transitions, 13261 flow [2023-11-29 05:35:55,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 615 transitions, 12631 flow, removed 287 selfloop flow, removed 12 redundant places. [2023-11-29 05:35:55,190 INFO L231 Difference]: Finished difference. Result has 438 places, 581 transitions, 11296 flow [2023-11-29 05:35:55,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9783, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11296, PETRI_PLACES=438, PETRI_TRANSITIONS=581} [2023-11-29 05:35:55,191 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 403 predicate places. [2023-11-29 05:35:55,191 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 581 transitions, 11296 flow [2023-11-29 05:35:55,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.714285714285715) internal successors, (393), 21 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:35:55,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:35:55,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:35:55,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 05:35:55,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 05:35:55,392 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:35:55,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:35:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1439497894, now seen corresponding path program 29 times [2023-11-29 05:35:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:35:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705480960] [2023-11-29 05:35:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:35:55,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:35:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:35:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:56,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:35:56,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705480960] [2023-11-29 05:35:56,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705480960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:35:56,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921181527] [2023-11-29 05:35:56,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:35:56,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:35:56,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:35:56,372 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:35:56,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 05:35:56,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 05:35:56,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:35:56,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 05:35:56,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:35:57,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:36:02,180 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse1 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse6 (mod (+ 2 c_thread2Thread1of1ForFork1_~i~1) 4294967296)) (.cse3 (* 4294967296 (div c_~x_1~0 4294967296))) (.cse5 (mod c_~x_1~0 4294967296)) (.cse4 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296))) (and (forall ((v_z_349 Int)) (or (< .cse0 v_z_349) (< v_z_349 .cse1) (let ((.cse2 (* 2 v_z_349))) (< (+ .cse2 c_~x_2~0 .cse3) (+ (* (div (+ .cse2 c_~x_2~0) 4294967296) 4294967296) .cse4 c_~x_1~0 2))))) (or (< (+ .cse5 .cse6) 4294967296) (forall ((v_z_349 Int)) (or (< .cse0 v_z_349) (let ((.cse7 (* 2 v_z_349))) (< (+ .cse7 c_~x_2~0 4294967294 .cse3) (+ (* (div (+ .cse7 c_~x_2~0) 4294967296) 4294967296) .cse4 c_~x_1~0))) (< v_z_349 .cse1)))) (forall ((v_z_349 Int)) (or (< .cse0 v_z_349) (let ((.cse8 (* 2 v_z_349))) (< (+ (* (div (+ .cse8 c_~x_2~0) 4294967296) 4294967296) c_~x_1~0 .cse6) (+ .cse8 c_~x_2~0 4294967297 .cse3))) (< v_z_349 .cse1))) (or (forall ((v_z_349 Int)) (or (< .cse0 v_z_349) (< v_z_349 .cse1) (let ((.cse9 (* 2 v_z_349))) (< (+ (* (div (+ .cse9 c_~x_2~0) 4294967296) 4294967296) c_~x_1~0 .cse6) (+ .cse9 c_~x_2~0 .cse3 1))))) (< 4294967294 (+ .cse5 .cse4))))) is different from false [2023-11-29 05:36:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 05:36:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921181527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:36:02,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:36:02,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-11-29 05:36:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465599113] [2023-11-29 05:36:02,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:36:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:36:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:36:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=267, Unknown=1, NotChecked=34, Total=380 [2023-11-29 05:36:02,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:36:02,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 581 transitions, 11296 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:02,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:36:02,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:36:02,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:36:07,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:36:08,793 INFO L124 PetriNetUnfolderBase]: 1191/2458 cut-off events. [2023-11-29 05:36:08,793 INFO L125 PetriNetUnfolderBase]: For 94865/94876 co-relation queries the response was YES. [2023-11-29 05:36:08,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23598 conditions, 2458 events. 1191/2458 cut-off events. For 94865/94876 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 17658 event pairs, 147 based on Foata normal form. 6/2464 useless extension candidates. Maximal degree in co-relation 23442. Up to 1961 conditions per place. [2023-11-29 05:36:08,829 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 534 selfloop transitions, 92 changer transitions 10/642 dead transitions. [2023-11-29 05:36:08,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 642 transitions, 13948 flow [2023-11-29 05:36:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:36:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 05:36:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 461 transitions. [2023-11-29 05:36:08,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6652236652236653 [2023-11-29 05:36:08,831 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 461 transitions. [2023-11-29 05:36:08,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 461 transitions. [2023-11-29 05:36:08,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:36:08,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 461 transitions. [2023-11-29 05:36:08,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 21.952380952380953) internal successors, (461), 21 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:08,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:08,833 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:08,833 INFO L175 Difference]: Start difference. First operand has 438 places, 581 transitions, 11296 flow. Second operand 21 states and 461 transitions. [2023-11-29 05:36:08,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 642 transitions, 13948 flow [2023-11-29 05:36:09,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 642 transitions, 13320 flow, removed 270 selfloop flow, removed 13 redundant places. [2023-11-29 05:36:09,783 INFO L231 Difference]: Finished difference. Result has 449 places, 598 transitions, 11842 flow [2023-11-29 05:36:09,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=10771, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11842, PETRI_PLACES=449, PETRI_TRANSITIONS=598} [2023-11-29 05:36:09,784 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 414 predicate places. [2023-11-29 05:36:09,784 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 598 transitions, 11842 flow [2023-11-29 05:36:09,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:09,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:36:09,784 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:36:09,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 05:36:09,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 05:36:09,985 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:36:09,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1648450525, now seen corresponding path program 30 times [2023-11-29 05:36:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:09,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479925937] [2023-11-29 05:36:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:14,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479925937] [2023-11-29 05:36:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479925937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:36:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349465333] [2023-11-29 05:36:14,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:36:14,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:14,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:14,722 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:36:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 05:36:14,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:36:14,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:36:14,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:36:14,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:36:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:15,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:36:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:25,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349465333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:36:25,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:36:25,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-29 05:36:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523068223] [2023-11-29 05:36:25,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:36:25,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:36:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:36:25,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:36:25,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:36:25,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 598 transitions, 11842 flow. Second operand has 25 states, 25 states have (on average 18.68) internal successors, (467), 25 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:25,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:36:25,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:36:25,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:36:45,236 INFO L124 PetriNetUnfolderBase]: 1203/2503 cut-off events. [2023-11-29 05:36:45,236 INFO L125 PetriNetUnfolderBase]: For 90515/90527 co-relation queries the response was YES. [2023-11-29 05:36:45,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23732 conditions, 2503 events. 1203/2503 cut-off events. For 90515/90527 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 18245 event pairs, 89 based on Foata normal form. 7/2510 useless extension candidates. Maximal degree in co-relation 23574. Up to 1984 conditions per place. [2023-11-29 05:36:45,330 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 568 selfloop transitions, 78 changer transitions 13/665 dead transitions. [2023-11-29 05:36:45,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 665 transitions, 13948 flow [2023-11-29 05:36:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 05:36:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 05:36:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 579 transitions. [2023-11-29 05:36:45,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-11-29 05:36:45,332 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 579 transitions. [2023-11-29 05:36:45,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 579 transitions. [2023-11-29 05:36:45,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:36:45,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 579 transitions. [2023-11-29 05:36:45,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 21.444444444444443) internal successors, (579), 27 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:45,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:45,335 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:45,335 INFO L175 Difference]: Start difference. First operand has 449 places, 598 transitions, 11842 flow. Second operand 27 states and 579 transitions. [2023-11-29 05:36:45,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 665 transitions, 13948 flow [2023-11-29 05:36:46,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 665 transitions, 13390 flow, removed 250 selfloop flow, removed 13 redundant places. [2023-11-29 05:36:46,128 INFO L231 Difference]: Finished difference. Result has 468 places, 604 transitions, 11779 flow [2023-11-29 05:36:46,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11284, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=11779, PETRI_PLACES=468, PETRI_TRANSITIONS=604} [2023-11-29 05:36:46,129 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 433 predicate places. [2023-11-29 05:36:46,129 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 604 transitions, 11779 flow [2023-11-29 05:36:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 18.68) internal successors, (467), 25 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:46,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:36:46,129 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:36:46,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 05:36:46,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:46,330 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 05:36:46,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 403720535, now seen corresponding path program 31 times [2023-11-29 05:36:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:46,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712039659] [2023-11-29 05:36:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:46,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:47,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:47,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712039659] [2023-11-29 05:36:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712039659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:36:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081514101] [2023-11-29 05:36:47,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:36:47,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:47,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:47,150 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:36:47,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_149e9286-be23-40be-9e5c-9afe7229c890/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 05:36:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:47,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:36:47,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:36:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:48,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:36:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:36:52,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081514101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:36:52,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:36:52,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-11-29 05:36:52,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978030910] [2023-11-29 05:36:52,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:36:52,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 05:36:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:52,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 05:36:52,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:36:52,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 05:36:52,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 604 transitions, 11779 flow. Second operand has 24 states, 24 states have (on average 18.625) internal successors, (447), 24 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:36:52,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:36:52,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 05:36:52,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:37:04,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 05:37:08,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []