./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX --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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:20:21,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:20:21,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 18:20:21,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:20:21,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:20:21,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:20:21,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:20:21,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:20:21,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:20:21,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:20:21,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:20:21,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:20:21,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:20:21,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:20:21,202 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:20:21,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:20:21,203 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:20:21,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:20:21,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:20:21,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:20:21,206 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 18:20:21,206 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 18:20:21,207 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 18:20:21,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:20:21,208 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:20:21,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:20:21,209 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:20:21,210 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:20:21,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:20:21,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:20:21,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:20:21,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:20:21,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:20:21,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:20:21,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:20:21,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:20:21,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:20:21,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:20:21,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:20:21,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:20:21,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:20:21,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:20:21,232 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_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-08 18:20:21,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:20:21,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:20:21,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:20:21,593 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:20:21,594 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:20:21,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c Unable to find full path for "g++" [2024-11-08 18:20:23,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:20:24,177 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:20:24,178 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-08 18:20:24,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/data/63724eb62/6e98de9e0e154014b5fc459fb7ca3221/FLAG8433b3866 [2024-11-08 18:20:24,205 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/data/63724eb62/6e98de9e0e154014b5fc459fb7ca3221 [2024-11-08 18:20:24,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:20:24,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:20:24,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:20:24,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:20:24,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:20:24,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e2ff35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24, skipping insertion in model container [2024-11-08 18:20:24,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:20:24,526 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 18:20:24,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:20:24,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:20:24,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:20:24,595 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:20:24,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24 WrapperNode [2024-11-08 18:20:24,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:20:24,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:20:24,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:20:24,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:20:24,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,645 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 158 [2024-11-08 18:20:24,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:20:24,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:20:24,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:20:24,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:20:24,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,685 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 18:20:24,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:20:24,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:20:24,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:20:24,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:20:24,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (1/1) ... [2024-11-08 18:20:24,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:20:24,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:24,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:20:24,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:20:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:20:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:20:24,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:20:24,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:20:24,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:20:24,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:20:24,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:20:24,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:20:24,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:20:24,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:20:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:20:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:20:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:20:24,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:20:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:20:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:20:24,802 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:20:24,939 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:20:24,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:20:25,430 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:20:25,430 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:20:25,866 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:20:25,866 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:20:25,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:20:25 BoogieIcfgContainer [2024-11-08 18:20:25,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:20:25,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:20:25,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:20:25,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:20:25,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:20:24" (1/3) ... [2024-11-08 18:20:25,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78809e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:20:25, skipping insertion in model container [2024-11-08 18:20:25,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:20:24" (2/3) ... [2024-11-08 18:20:25,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78809e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:20:25, skipping insertion in model container [2024-11-08 18:20:25,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:20:25" (3/3) ... [2024-11-08 18:20:25,884 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-08 18:20:25,909 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:20:25,910 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-08 18:20:25,910 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:20:26,007 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:20:26,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 46 transitions, 106 flow [2024-11-08 18:20:26,115 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-11-08 18:20:26,115 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:20:26,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 6/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 94 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-11-08 18:20:26,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 46 transitions, 106 flow [2024-11-08 18:20:26,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 43 transitions, 98 flow [2024-11-08 18:20:26,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:20:26,156 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@7fd118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:20:26,156 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-08 18:20:26,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:20:26,171 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-08 18:20:26,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:20:26,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:26,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:20:26,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:26,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash 16014262, now seen corresponding path program 1 times [2024-11-08 18:20:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:26,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112012089] [2024-11-08 18:20:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:26,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112012089] [2024-11-08 18:20:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112012089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:26,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:20:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579449894] [2024-11-08 18:20:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:26,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:20:26,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:20:26,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:20:26,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-08 18:20:26,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:26,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:26,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-08 18:20:26,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:26,935 INFO L124 PetriNetUnfolderBase]: 218/412 cut-off events. [2024-11-08 18:20:26,935 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-08 18:20:26,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 412 events. 218/412 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2158 event pairs, 180 based on Foata normal form. 20/293 useless extension candidates. Maximal degree in co-relation 738. Up to 351 conditions per place. [2024-11-08 18:20:26,946 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-08 18:20:26,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 142 flow [2024-11-08 18:20:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:20:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:20:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-08 18:20:26,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-11-08 18:20:26,967 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 98 flow. Second operand 3 states and 77 transitions. [2024-11-08 18:20:26,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 142 flow [2024-11-08 18:20:26,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:20:26,980 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 86 flow [2024-11-08 18:20:26,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-11-08 18:20:26,990 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-08 18:20:26,990 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 86 flow [2024-11-08 18:20:26,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:26,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:26,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:20:26,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:20:26,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:26,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:26,992 INFO L85 PathProgramCache]: Analyzing trace with hash 16014263, now seen corresponding path program 1 times [2024-11-08 18:20:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:26,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278099221] [2024-11-08 18:20:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278099221] [2024-11-08 18:20:27,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278099221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:27,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:20:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394941696] [2024-11-08 18:20:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:27,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:20:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:27,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:20:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:20:27,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:27,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:27,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:27,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:27,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:27,851 INFO L124 PetriNetUnfolderBase]: 219/417 cut-off events. [2024-11-08 18:20:27,851 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:20:27,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 417 events. 219/417 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2189 event pairs, 180 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 763. Up to 359 conditions per place. [2024-11-08 18:20:27,856 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 31 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-11-08 18:20:27,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 168 flow [2024-11-08 18:20:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:20:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:20:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-08 18:20:27,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-11-08 18:20:27,860 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 86 flow. Second operand 4 states and 89 transitions. [2024-11-08 18:20:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 168 flow [2024-11-08 18:20:27,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:20:27,863 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 111 flow [2024-11-08 18:20:27,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-11-08 18:20:27,864 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-11-08 18:20:27,864 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 111 flow [2024-11-08 18:20:27,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:27,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:27,865 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-08 18:20:27,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:20:27,866 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:27,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 340032329, now seen corresponding path program 1 times [2024-11-08 18:20:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:27,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754345725] [2024-11-08 18:20:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:27,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754345725] [2024-11-08 18:20:28,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754345725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634027320] [2024-11-08 18:20:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:28,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:28,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:28,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:20:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:28,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:20:28,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:28,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 18:20:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:29,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634027320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:29,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:29,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-08 18:20:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864537904] [2024-11-08 18:20:29,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:29,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:20:29,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:20:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:20:29,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:29,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 111 flow. Second operand has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:29,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:29,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:29,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:30,043 INFO L124 PetriNetUnfolderBase]: 218/415 cut-off events. [2024-11-08 18:20:30,044 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:20:30,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 415 events. 218/415 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2187 event pairs, 180 based on Foata normal form. 1/278 useless extension candidates. Maximal degree in co-relation 772. Up to 352 conditions per place. [2024-11-08 18:20:30,051 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 26 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-08 18:20:30,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 173 flow [2024-11-08 18:20:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:20:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:20:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-11-08 18:20:30,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40942028985507245 [2024-11-08 18:20:30,055 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 111 flow. Second operand 6 states and 113 transitions. [2024-11-08 18:20:30,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 173 flow [2024-11-08 18:20:30,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:20:30,061 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 114 flow [2024-11-08 18:20:30,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-08 18:20:30,062 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-08 18:20:30,063 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 114 flow [2024-11-08 18:20:30,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:30,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:30,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:30,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:20:30,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:30,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:30,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash 936931409, now seen corresponding path program 1 times [2024-11-08 18:20:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165003226] [2024-11-08 18:20:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:30,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165003226] [2024-11-08 18:20:30,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165003226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:30,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:30,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:20:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316833183] [2024-11-08 18:20:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:30,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:20:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:20:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:30,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-08 18:20:30,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:30,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:30,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-08 18:20:30,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:30,487 INFO L124 PetriNetUnfolderBase]: 150/294 cut-off events. [2024-11-08 18:20:30,487 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-08 18:20:30,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 294 events. 150/294 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1311 event pairs, 118 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 538. Up to 240 conditions per place. [2024-11-08 18:20:30,491 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 22 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-08 18:20:30,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 158 flow [2024-11-08 18:20:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:20:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:20:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-08 18:20:30,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-11-08 18:20:30,493 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 114 flow. Second operand 4 states and 90 transitions. [2024-11-08 18:20:30,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 158 flow [2024-11-08 18:20:30,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 139 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-08 18:20:30,495 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 95 flow [2024-11-08 18:20:30,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-08 18:20:30,497 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-11-08 18:20:30,497 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 95 flow [2024-11-08 18:20:30,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:30,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:30,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:30,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:20:30,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:30,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 936931410, now seen corresponding path program 1 times [2024-11-08 18:20:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497623838] [2024-11-08 18:20:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497623838] [2024-11-08 18:20:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497623838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:30,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:30,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:20:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006454157] [2024-11-08 18:20:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:30,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:20:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:20:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:30,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-08 18:20:30,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:30,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:30,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-08 18:20:30,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:30,784 INFO L124 PetriNetUnfolderBase]: 158/325 cut-off events. [2024-11-08 18:20:30,785 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 18:20:30,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 325 events. 158/325 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1411 event pairs, 125 based on Foata normal form. 8/266 useless extension candidates. Maximal degree in co-relation 529. Up to 244 conditions per place. [2024-11-08 18:20:30,788 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 24 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2024-11-08 18:20:30,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 181 flow [2024-11-08 18:20:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:20:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:20:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-08 18:20:30,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-08 18:20:30,791 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 95 flow. Second operand 5 states and 115 transitions. [2024-11-08 18:20:30,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 181 flow [2024-11-08 18:20:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:20:30,793 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 107 flow [2024-11-08 18:20:30,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-11-08 18:20:30,794 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-11-08 18:20:30,795 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 107 flow [2024-11-08 18:20:30,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:30,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:30,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:30,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:20:30,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:30,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -536185116, now seen corresponding path program 1 times [2024-11-08 18:20:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712461719] [2024-11-08 18:20:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712461719] [2024-11-08 18:20:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712461719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110433074] [2024-11-08 18:20:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:31,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:31,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:31,111 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:31,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:20:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:31,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:20:31,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:31,365 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:20:31,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110433074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:31,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:20:31,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:20:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838282964] [2024-11-08 18:20:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:31,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:20:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:31,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:20:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:20:31,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-11-08 18:20:31,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-11-08 18:20:31,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:31,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-11-08 18:20:31,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:31,589 INFO L124 PetriNetUnfolderBase]: 93/191 cut-off events. [2024-11-08 18:20:31,589 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-08 18:20:31,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 191 events. 93/191 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 647 event pairs, 68 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 383. Up to 148 conditions per place. [2024-11-08 18:20:31,591 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 20 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-08 18:20:31,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 139 flow [2024-11-08 18:20:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:20:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:20:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-08 18:20:31,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-11-08 18:20:31,593 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 107 flow. Second operand 4 states and 84 transitions. [2024-11-08 18:20:31,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 139 flow [2024-11-08 18:20:31,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 135 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:20:31,595 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 95 flow [2024-11-08 18:20:31,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-08 18:20:31,596 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-11-08 18:20:31,596 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 95 flow [2024-11-08 18:20:31,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2024-11-08 18:20:31,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:31,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:31,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:20:31,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:31,802 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:31,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:31,802 INFO L85 PathProgramCache]: Analyzing trace with hash -79234104, now seen corresponding path program 1 times [2024-11-08 18:20:31,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:31,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406327051] [2024-11-08 18:20:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:32,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:32,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406327051] [2024-11-08 18:20:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406327051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:32,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378875058] [2024-11-08 18:20:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:32,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:32,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 95 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:32,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:32,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:33,034 INFO L124 PetriNetUnfolderBase]: 264/498 cut-off events. [2024-11-08 18:20:33,034 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-08 18:20:33,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 498 events. 264/498 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2111 event pairs, 5 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 1019. Up to 277 conditions per place. [2024-11-08 18:20:33,039 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 53 selfloop transitions, 20 changer transitions 5/86 dead transitions. [2024-11-08 18:20:33,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 387 flow [2024-11-08 18:20:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:20:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:20:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-11-08 18:20:33,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42391304347826086 [2024-11-08 18:20:33,041 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 95 flow. Second operand 12 states and 234 transitions. [2024-11-08 18:20:33,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 387 flow [2024-11-08 18:20:33,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 86 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:20:33,045 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 213 flow [2024-11-08 18:20:33,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=213, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-08 18:20:33,046 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-11-08 18:20:33,046 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 213 flow [2024-11-08 18:20:33,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:33,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:33,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:33,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:20:33,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:33,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 856846726, now seen corresponding path program 2 times [2024-11-08 18:20:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883200584] [2024-11-08 18:20:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:33,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883200584] [2024-11-08 18:20:33,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883200584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:20:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794015212] [2024-11-08 18:20:33,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:33,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:20:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:20:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:20:33,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-08 18:20:33,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:33,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:33,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-08 18:20:33,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:33,209 INFO L124 PetriNetUnfolderBase]: 144/312 cut-off events. [2024-11-08 18:20:33,209 INFO L125 PetriNetUnfolderBase]: For 204/217 co-relation queries the response was YES. [2024-11-08 18:20:33,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 312 events. 144/312 cut-off events. For 204/217 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1257 event pairs, 24 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 823. Up to 200 conditions per place. [2024-11-08 18:20:33,213 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 35 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-08 18:20:33,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 297 flow [2024-11-08 18:20:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:20:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:20:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-08 18:20:33,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-11-08 18:20:33,215 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 213 flow. Second operand 3 states and 78 transitions. [2024-11-08 18:20:33,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 297 flow [2024-11-08 18:20:33,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 287 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-08 18:20:33,219 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 208 flow [2024-11-08 18:20:33,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-08 18:20:33,220 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-11-08 18:20:33,220 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 208 flow [2024-11-08 18:20:33,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:33,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:33,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:33,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:20:33,221 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:33,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 720872714, now seen corresponding path program 3 times [2024-11-08 18:20:33,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655726089] [2024-11-08 18:20:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:33,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655726089] [2024-11-08 18:20:33,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655726089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:33,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232180206] [2024-11-08 18:20:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:33,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:33,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:33,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:33,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:33,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:33,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:33,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:33,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:34,330 INFO L124 PetriNetUnfolderBase]: 240/481 cut-off events. [2024-11-08 18:20:34,330 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-11-08 18:20:34,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 481 events. 240/481 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2047 event pairs, 31 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 1385. Up to 269 conditions per place. [2024-11-08 18:20:34,337 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 50 selfloop transitions, 22 changer transitions 5/85 dead transitions. [2024-11-08 18:20:34,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 522 flow [2024-11-08 18:20:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:20:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:20:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-11-08 18:20:34,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42292490118577075 [2024-11-08 18:20:34,340 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 208 flow. Second operand 11 states and 214 transitions. [2024-11-08 18:20:34,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 522 flow [2024-11-08 18:20:34,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 491 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-08 18:20:34,348 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 324 flow [2024-11-08 18:20:34,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=324, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-08 18:20:34,352 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-11-08 18:20:34,352 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 324 flow [2024-11-08 18:20:34,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:34,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:34,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:34,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:20:34,353 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:34,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -407838720, now seen corresponding path program 4 times [2024-11-08 18:20:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141582384] [2024-11-08 18:20:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:34,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141582384] [2024-11-08 18:20:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141582384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:35,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:35,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:35,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239861438] [2024-11-08 18:20:35,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:35,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:35,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:35,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:35,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:35,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 324 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:35,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:35,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:35,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:35,538 INFO L124 PetriNetUnfolderBase]: 246/499 cut-off events. [2024-11-08 18:20:35,539 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-11-08 18:20:35,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 499 events. 246/499 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2190 event pairs, 34 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 1561. Up to 284 conditions per place. [2024-11-08 18:20:35,545 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 55 selfloop transitions, 24 changer transitions 5/92 dead transitions. [2024-11-08 18:20:35,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 650 flow [2024-11-08 18:20:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:20:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:20:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-11-08 18:20:35,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2024-11-08 18:20:35,547 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 324 flow. Second operand 11 states and 216 transitions. [2024-11-08 18:20:35,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 650 flow [2024-11-08 18:20:35,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 625 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-08 18:20:35,556 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 464 flow [2024-11-08 18:20:35,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=464, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-11-08 18:20:35,559 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-11-08 18:20:35,559 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 464 flow [2024-11-08 18:20:35,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:35,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:35,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:35,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:20:35,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:35,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash -557550750, now seen corresponding path program 5 times [2024-11-08 18:20:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189129977] [2024-11-08 18:20:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:36,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:36,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189129977] [2024-11-08 18:20:36,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189129977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:36,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:36,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668611361] [2024-11-08 18:20:36,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:36,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:36,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:36,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:36,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 464 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:36,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:36,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:36,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:36,725 INFO L124 PetriNetUnfolderBase]: 254/535 cut-off events. [2024-11-08 18:20:36,726 INFO L125 PetriNetUnfolderBase]: For 1195/1195 co-relation queries the response was YES. [2024-11-08 18:20:36,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 535 events. 254/535 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2508 event pairs, 22 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 1843. Up to 264 conditions per place. [2024-11-08 18:20:36,732 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 56 selfloop transitions, 35 changer transitions 5/104 dead transitions. [2024-11-08 18:20:36,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 104 transitions, 808 flow [2024-11-08 18:20:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:20:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 18:20:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 247 transitions. [2024-11-08 18:20:36,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-11-08 18:20:36,734 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 464 flow. Second operand 13 states and 247 transitions. [2024-11-08 18:20:36,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 104 transitions, 808 flow [2024-11-08 18:20:36,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 104 transitions, 777 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-08 18:20:36,742 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 555 flow [2024-11-08 18:20:36,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=555, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2024-11-08 18:20:36,743 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-08 18:20:36,744 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 555 flow [2024-11-08 18:20:36,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:36,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:36,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:36,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:20:36,745 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:36,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1973070376, now seen corresponding path program 6 times [2024-11-08 18:20:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106563051] [2024-11-08 18:20:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:37,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106563051] [2024-11-08 18:20:37,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106563051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:37,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:37,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904835727] [2024-11-08 18:20:37,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:37,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:37,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:37,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:37,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:37,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:37,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 555 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:37,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:37,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:37,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:37,868 INFO L124 PetriNetUnfolderBase]: 266/564 cut-off events. [2024-11-08 18:20:37,868 INFO L125 PetriNetUnfolderBase]: For 1873/1873 co-relation queries the response was YES. [2024-11-08 18:20:37,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2099 conditions, 564 events. 266/564 cut-off events. For 1873/1873 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2693 event pairs, 28 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 2067. Up to 328 conditions per place. [2024-11-08 18:20:37,875 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 61 selfloop transitions, 31 changer transitions 5/105 dead transitions. [2024-11-08 18:20:37,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 897 flow [2024-11-08 18:20:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:20:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:20:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-11-08 18:20:37,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41847826086956524 [2024-11-08 18:20:37,878 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 555 flow. Second operand 12 states and 231 transitions. [2024-11-08 18:20:37,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 897 flow [2024-11-08 18:20:37,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 801 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-11-08 18:20:37,889 INFO L231 Difference]: Finished difference. Result has 95 places, 74 transitions, 576 flow [2024-11-08 18:20:37,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=576, PETRI_PLACES=95, PETRI_TRANSITIONS=74} [2024-11-08 18:20:37,891 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-11-08 18:20:37,891 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 74 transitions, 576 flow [2024-11-08 18:20:37,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:37,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:37,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:37,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:20:37,893 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:37,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2101441172, now seen corresponding path program 7 times [2024-11-08 18:20:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905381377] [2024-11-08 18:20:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:38,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:38,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905381377] [2024-11-08 18:20:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905381377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:38,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:38,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:38,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66675619] [2024-11-08 18:20:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:38,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:38,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:38,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:38,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 74 transitions, 576 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:38,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:38,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:38,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:38,863 INFO L124 PetriNetUnfolderBase]: 262/551 cut-off events. [2024-11-08 18:20:38,863 INFO L125 PetriNetUnfolderBase]: For 2004/2012 co-relation queries the response was YES. [2024-11-08 18:20:38,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 551 events. 262/551 cut-off events. For 2004/2012 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2594 event pairs, 28 based on Foata normal form. 9/556 useless extension candidates. Maximal degree in co-relation 2076. Up to 332 conditions per place. [2024-11-08 18:20:38,870 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 55 selfloop transitions, 30 changer transitions 8/101 dead transitions. [2024-11-08 18:20:38,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 874 flow [2024-11-08 18:20:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:20:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:20:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-11-08 18:20:38,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40942028985507245 [2024-11-08 18:20:38,873 INFO L175 Difference]: Start difference. First operand has 95 places, 74 transitions, 576 flow. Second operand 12 states and 226 transitions. [2024-11-08 18:20:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 874 flow [2024-11-08 18:20:38,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 101 transitions, 801 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-08 18:20:38,885 INFO L231 Difference]: Finished difference. Result has 98 places, 74 transitions, 572 flow [2024-11-08 18:20:38,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=572, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2024-11-08 18:20:38,886 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-11-08 18:20:38,886 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 572 flow [2024-11-08 18:20:38,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:38,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:38,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:38,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:20:38,888 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:38,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2002325148, now seen corresponding path program 8 times [2024-11-08 18:20:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:38,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846855217] [2024-11-08 18:20:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:39,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:39,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846855217] [2024-11-08 18:20:39,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846855217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:39,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:39,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178093723] [2024-11-08 18:20:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:39,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:39,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:39,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 572 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:39,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:39,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:39,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:39,991 INFO L124 PetriNetUnfolderBase]: 271/574 cut-off events. [2024-11-08 18:20:39,991 INFO L125 PetriNetUnfolderBase]: For 2175/2187 co-relation queries the response was YES. [2024-11-08 18:20:39,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 574 events. 271/574 cut-off events. For 2175/2187 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2730 event pairs, 46 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 2167. Up to 338 conditions per place. [2024-11-08 18:20:39,998 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 65 selfloop transitions, 27 changer transitions 5/105 dead transitions. [2024-11-08 18:20:39,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 936 flow [2024-11-08 18:20:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:20:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:20:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-11-08 18:20:40,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2024-11-08 18:20:40,001 INFO L175 Difference]: Start difference. First operand has 98 places, 74 transitions, 572 flow. Second operand 11 states and 218 transitions. [2024-11-08 18:20:40,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 936 flow [2024-11-08 18:20:40,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 866 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-11-08 18:20:40,013 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 607 flow [2024-11-08 18:20:40,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=607, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-11-08 18:20:40,014 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2024-11-08 18:20:40,015 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 607 flow [2024-11-08 18:20:40,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:40,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:40,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:40,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:20:40,016 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:40,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash -545993522, now seen corresponding path program 9 times [2024-11-08 18:20:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:40,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153431533] [2024-11-08 18:20:40,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:40,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153431533] [2024-11-08 18:20:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153431533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508601610] [2024-11-08 18:20:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:40,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:40,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:40,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 607 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:40,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:40,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:40,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:40,921 INFO L124 PetriNetUnfolderBase]: 267/561 cut-off events. [2024-11-08 18:20:40,921 INFO L125 PetriNetUnfolderBase]: For 2862/2888 co-relation queries the response was YES. [2024-11-08 18:20:40,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 561 events. 267/561 cut-off events. For 2862/2888 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2649 event pairs, 46 based on Foata normal form. 11/572 useless extension candidates. Maximal degree in co-relation 2229. Up to 342 conditions per place. [2024-11-08 18:20:40,928 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 59 selfloop transitions, 26 changer transitions 8/101 dead transitions. [2024-11-08 18:20:40,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 101 transitions, 933 flow [2024-11-08 18:20:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:20:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:20:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-11-08 18:20:40,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4209486166007905 [2024-11-08 18:20:40,931 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 607 flow. Second operand 11 states and 213 transitions. [2024-11-08 18:20:40,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 101 transitions, 933 flow [2024-11-08 18:20:40,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 858 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-11-08 18:20:40,945 INFO L231 Difference]: Finished difference. Result has 102 places, 77 transitions, 595 flow [2024-11-08 18:20:40,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=595, PETRI_PLACES=102, PETRI_TRANSITIONS=77} [2024-11-08 18:20:40,946 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-11-08 18:20:40,946 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 77 transitions, 595 flow [2024-11-08 18:20:40,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:40,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:40,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:40,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:20:40,947 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:40,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash -946032478, now seen corresponding path program 10 times [2024-11-08 18:20:40,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:40,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48724558] [2024-11-08 18:20:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:41,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:41,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48724558] [2024-11-08 18:20:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48724558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:41,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:41,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:41,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105759352] [2024-11-08 18:20:41,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:41,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:41,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:41,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:41,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:41,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 77 transitions, 595 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:41,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:41,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:41,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:42,078 INFO L124 PetriNetUnfolderBase]: 279/592 cut-off events. [2024-11-08 18:20:42,078 INFO L125 PetriNetUnfolderBase]: For 3097/3121 co-relation queries the response was YES. [2024-11-08 18:20:42,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 592 events. 279/592 cut-off events. For 3097/3121 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2801 event pairs, 37 based on Foata normal form. 5/592 useless extension candidates. Maximal degree in co-relation 2336. Up to 348 conditions per place. [2024-11-08 18:20:42,086 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 69 selfloop transitions, 25 changer transitions 5/107 dead transitions. [2024-11-08 18:20:42,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 982 flow [2024-11-08 18:20:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:20:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:20:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-11-08 18:20:42,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-11-08 18:20:42,088 INFO L175 Difference]: Start difference. First operand has 102 places, 77 transitions, 595 flow. Second operand 11 states and 220 transitions. [2024-11-08 18:20:42,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 982 flow [2024-11-08 18:20:42,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 918 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-08 18:20:42,107 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 642 flow [2024-11-08 18:20:42,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=642, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2024-11-08 18:20:42,109 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-11-08 18:20:42,109 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 642 flow [2024-11-08 18:20:42,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:42,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:42,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:42,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:20:42,110 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:42,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1314585492, now seen corresponding path program 11 times [2024-11-08 18:20:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836677464] [2024-11-08 18:20:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:42,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:42,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836677464] [2024-11-08 18:20:42,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836677464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:42,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:42,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 18:20:42,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301315417] [2024-11-08 18:20:42,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:42,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:20:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:20:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:20:42,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:42,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:42,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:42,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:42,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:43,013 INFO L124 PetriNetUnfolderBase]: 275/577 cut-off events. [2024-11-08 18:20:43,013 INFO L125 PetriNetUnfolderBase]: For 4016/4060 co-relation queries the response was YES. [2024-11-08 18:20:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2430 conditions, 577 events. 275/577 cut-off events. For 4016/4060 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2703 event pairs, 37 based on Foata normal form. 13/585 useless extension candidates. Maximal degree in co-relation 2394. Up to 352 conditions per place. [2024-11-08 18:20:43,021 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 63 selfloop transitions, 24 changer transitions 8/103 dead transitions. [2024-11-08 18:20:43,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 103 transitions, 975 flow [2024-11-08 18:20:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:20:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 18:20:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-11-08 18:20:43,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.424901185770751 [2024-11-08 18:20:43,023 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 642 flow. Second operand 11 states and 215 transitions. [2024-11-08 18:20:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 103 transitions, 975 flow [2024-11-08 18:20:43,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 103 transitions, 894 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-08 18:20:43,038 INFO L231 Difference]: Finished difference. Result has 107 places, 80 transitions, 622 flow [2024-11-08 18:20:43,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=622, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2024-11-08 18:20:43,039 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2024-11-08 18:20:43,039 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 622 flow [2024-11-08 18:20:43,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:43,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:43,040 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:43,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:20:43,040 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:43,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 92273192, now seen corresponding path program 1 times [2024-11-08 18:20:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:43,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421936608] [2024-11-08 18:20:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:20:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421936608] [2024-11-08 18:20:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421936608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:20:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:20:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:20:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370173276] [2024-11-08 18:20:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:20:43,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:20:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:20:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:20:43,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-08 18:20:43,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:43,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:43,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-08 18:20:43,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:43,345 INFO L124 PetriNetUnfolderBase]: 274/691 cut-off events. [2024-11-08 18:20:43,345 INFO L125 PetriNetUnfolderBase]: For 5210/5302 co-relation queries the response was YES. [2024-11-08 18:20:43,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 691 events. 274/691 cut-off events. For 5210/5302 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3783 event pairs, 61 based on Foata normal form. 49/734 useless extension candidates. Maximal degree in co-relation 2651. Up to 186 conditions per place. [2024-11-08 18:20:43,355 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 52 selfloop transitions, 7 changer transitions 26/103 dead transitions. [2024-11-08 18:20:43,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 945 flow [2024-11-08 18:20:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:20:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:20:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-08 18:20:43,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-11-08 18:20:43,357 INFO L175 Difference]: Start difference. First operand has 107 places, 80 transitions, 622 flow. Second operand 4 states and 116 transitions. [2024-11-08 18:20:43,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 945 flow [2024-11-08 18:20:43,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 878 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-08 18:20:43,412 INFO L231 Difference]: Finished difference. Result has 100 places, 53 transitions, 388 flow [2024-11-08 18:20:43,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=100, PETRI_TRANSITIONS=53} [2024-11-08 18:20:43,413 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2024-11-08 18:20:43,413 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 53 transitions, 388 flow [2024-11-08 18:20:43,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:43,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:43,414 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:43,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:20:43,415 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:43,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1500114079, now seen corresponding path program 1 times [2024-11-08 18:20:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:43,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137411134] [2024-11-08 18:20:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:43,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:43,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:43,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:43,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137411134] [2024-11-08 18:20:43,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137411134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:43,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397332590] [2024-11-08 18:20:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:43,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:43,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:43,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:43,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:20:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:43,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:20:43,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:43,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:43,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397332590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:43,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:43,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-08 18:20:43,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702498699] [2024-11-08 18:20:43,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:43,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:20:43,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:43,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:20:43,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:20:44,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-08 18:20:44,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 53 transitions, 388 flow. Second operand has 14 states, 14 states have (on average 17.642857142857142) internal successors, (247), 14 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:44,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:44,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-08 18:20:44,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:44,446 INFO L124 PetriNetUnfolderBase]: 275/686 cut-off events. [2024-11-08 18:20:44,446 INFO L125 PetriNetUnfolderBase]: For 4418/4470 co-relation queries the response was YES. [2024-11-08 18:20:44,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 686 events. 275/686 cut-off events. For 4418/4470 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3454 event pairs, 135 based on Foata normal form. 32/709 useless extension candidates. Maximal degree in co-relation 2658. Up to 344 conditions per place. [2024-11-08 18:20:44,455 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 37 selfloop transitions, 5 changer transitions 28/85 dead transitions. [2024-11-08 18:20:44,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 752 flow [2024-11-08 18:20:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:20:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 18:20:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-11-08 18:20:44,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2024-11-08 18:20:44,457 INFO L175 Difference]: Start difference. First operand has 100 places, 53 transitions, 388 flow. Second operand 9 states and 177 transitions. [2024-11-08 18:20:44,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 752 flow [2024-11-08 18:20:44,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 593 flow, removed 58 selfloop flow, removed 22 redundant places. [2024-11-08 18:20:44,467 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 321 flow [2024-11-08 18:20:44,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=321, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-11-08 18:20:44,468 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-11-08 18:20:44,469 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 321 flow [2024-11-08 18:20:44,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.642857142857142) internal successors, (247), 14 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:44,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:44,469 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:44,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:20:44,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:44,671 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:44,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1831152335, now seen corresponding path program 2 times [2024-11-08 18:20:44,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:44,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889977462] [2024-11-08 18:20:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:45,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889977462] [2024-11-08 18:20:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889977462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976628029] [2024-11-08 18:20:45,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:20:45,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:45,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:45,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:45,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:20:45,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:20:45,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:20:45,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:20:45,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:45,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:46,101 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 18:20:46,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-08 18:20:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976628029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:46,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-08 18:20:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668649406] [2024-11-08 18:20:46,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:46,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:20:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:46,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:20:46,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:20:46,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-08 18:20:46,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 321 flow. Second operand has 23 states, 23 states have (on average 14.956521739130435) internal successors, (344), 23 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:46,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:46,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-08 18:20:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:48,845 INFO L124 PetriNetUnfolderBase]: 907/1940 cut-off events. [2024-11-08 18:20:48,846 INFO L125 PetriNetUnfolderBase]: For 2695/2723 co-relation queries the response was YES. [2024-11-08 18:20:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1940 events. 907/1940 cut-off events. For 2695/2723 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11409 event pairs, 92 based on Foata normal form. 16/1886 useless extension candidates. Maximal degree in co-relation 3817. Up to 365 conditions per place. [2024-11-08 18:20:48,864 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 172 selfloop transitions, 48 changer transitions 0/233 dead transitions. [2024-11-08 18:20:48,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 233 transitions, 1656 flow [2024-11-08 18:20:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 18:20:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-08 18:20:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 512 transitions. [2024-11-08 18:20:48,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4280936454849498 [2024-11-08 18:20:48,867 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 321 flow. Second operand 26 states and 512 transitions. [2024-11-08 18:20:48,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 233 transitions, 1656 flow [2024-11-08 18:20:48,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 233 transitions, 1604 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-08 18:20:48,876 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 833 flow [2024-11-08 18:20:48,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=833, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2024-11-08 18:20:48,877 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2024-11-08 18:20:48,877 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 833 flow [2024-11-08 18:20:48,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.956521739130435) internal successors, (344), 23 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:48,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:48,878 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:48,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:20:49,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:49,082 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:49,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1206319721, now seen corresponding path program 3 times [2024-11-08 18:20:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:49,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453337773] [2024-11-08 18:20:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:49,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:49,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453337773] [2024-11-08 18:20:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453337773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949665473] [2024-11-08 18:20:49,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:20:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:49,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:49,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:49,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:20:49,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 18:20:49,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:20:49,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:20:49,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:20:50,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:50,150 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 18:20:50,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-08 18:20:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:20:50,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949665473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:50,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:50,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 15 [2024-11-08 18:20:50,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238984317] [2024-11-08 18:20:50,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:50,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:20:50,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:20:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:20:50,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-11-08 18:20:50,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 833 flow. Second operand has 16 states, 16 states have (on average 16.0) internal successors, (256), 16 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:50,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:50,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-11-08 18:20:50,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:20:51,194 INFO L124 PetriNetUnfolderBase]: 1266/2645 cut-off events. [2024-11-08 18:20:51,194 INFO L125 PetriNetUnfolderBase]: For 14624/14802 co-relation queries the response was YES. [2024-11-08 18:20:51,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10201 conditions, 2645 events. 1266/2645 cut-off events. For 14624/14802 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16579 event pairs, 259 based on Foata normal form. 76/2681 useless extension candidates. Maximal degree in co-relation 8626. Up to 915 conditions per place. [2024-11-08 18:20:51,239 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 109 selfloop transitions, 41 changer transitions 0/166 dead transitions. [2024-11-08 18:20:51,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 166 transitions, 1724 flow [2024-11-08 18:20:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:20:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 18:20:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-11-08 18:20:51,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3967391304347826 [2024-11-08 18:20:51,242 INFO L175 Difference]: Start difference. First operand has 107 places, 99 transitions, 833 flow. Second operand 12 states and 219 transitions. [2024-11-08 18:20:51,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 166 transitions, 1724 flow [2024-11-08 18:20:51,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 166 transitions, 1557 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-11-08 18:20:51,370 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 999 flow [2024-11-08 18:20:51,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=999, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2024-11-08 18:20:51,371 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-11-08 18:20:51,371 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 999 flow [2024-11-08 18:20:51,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.0) internal successors, (256), 16 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:51,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:20:51,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:20:51,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:20:51,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:51,574 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:20:51,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:20:51,575 INFO L85 PathProgramCache]: Analyzing trace with hash 94389957, now seen corresponding path program 1 times [2024-11-08 18:20:51,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:20:51,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81635671] [2024-11-08 18:20:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:51,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:20:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:20:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81635671] [2024-11-08 18:20:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81635671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:20:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930063400] [2024-11-08 18:20:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:20:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:20:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:20:52,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:20:52,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:20:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:20:53,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 18:20:53,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:20:53,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-08 18:20:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:54,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:20:55,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:20:55,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2024-11-08 18:20:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:20:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930063400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:20:56,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:20:56,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 16] total 51 [2024-11-08 18:20:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923172979] [2024-11-08 18:20:56,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:20:56,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 18:20:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:20:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 18:20:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2345, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:20:56,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-11-08 18:20:56,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 999 flow. Second operand has 52 states, 52 states have (on average 8.903846153846153) internal successors, (463), 52 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:20:56,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:20:56,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-11-08 18:20:56,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:21:17,933 INFO L124 PetriNetUnfolderBase]: 8192/14947 cut-off events. [2024-11-08 18:21:17,934 INFO L125 PetriNetUnfolderBase]: For 81557/81557 co-relation queries the response was YES. [2024-11-08 18:21:18,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60711 conditions, 14947 events. 8192/14947 cut-off events. For 81557/81557 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 112041 event pairs, 475 based on Foata normal form. 10/14957 useless extension candidates. Maximal degree in co-relation 51364. Up to 4217 conditions per place. [2024-11-08 18:21:18,132 INFO L140 encePairwiseOnDemand]: 25/46 looper letters, 533 selfloop transitions, 902 changer transitions 67/1504 dead transitions. [2024-11-08 18:21:18,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1504 transitions, 15287 flow [2024-11-08 18:21:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2024-11-08 18:21:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2024-11-08 18:21:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 1933 transitions. [2024-11-08 18:21:18,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28980509745127436 [2024-11-08 18:21:18,141 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 999 flow. Second operand 145 states and 1933 transitions. [2024-11-08 18:21:18,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1504 transitions, 15287 flow [2024-11-08 18:21:18,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1504 transitions, 15128 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-11-08 18:21:18,611 INFO L231 Difference]: Finished difference. Result has 298 places, 1142 transitions, 13932 flow [2024-11-08 18:21:18,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=145, PETRI_FLOW=13932, PETRI_PLACES=298, PETRI_TRANSITIONS=1142} [2024-11-08 18:21:18,612 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 254 predicate places. [2024-11-08 18:21:18,612 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 1142 transitions, 13932 flow [2024-11-08 18:21:18,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 8.903846153846153) internal successors, (463), 52 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:21:18,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:21:18,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:21:18,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:21:18,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:21:18,818 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:21:18,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:21:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 569899223, now seen corresponding path program 2 times [2024-11-08 18:21:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:21:18,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231489259] [2024-11-08 18:21:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:21:18,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:21:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:21:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:21:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231489259] [2024-11-08 18:21:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231489259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:21:20,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39069873] [2024-11-08 18:21:20,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:21:20,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:21:20,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:21:20,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:21:20,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:21:20,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:21:20,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:21:20,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 18:21:20,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:21:22,174 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-08 18:21:22,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2024-11-08 18:21:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:21:22,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:21:23,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:21:23,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-08 18:21:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:21:24,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39069873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:21:24,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:21:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 50 [2024-11-08 18:21:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253287385] [2024-11-08 18:21:24,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:21:24,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 18:21:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:21:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 18:21:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2340, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 18:21:25,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-11-08 18:21:25,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1142 transitions, 13932 flow. Second operand has 51 states, 51 states have (on average 8.941176470588236) internal successors, (456), 51 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:21:25,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:21:25,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-11-08 18:21:25,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:21:42,532 INFO L124 PetriNetUnfolderBase]: 10156/18913 cut-off events. [2024-11-08 18:21:42,533 INFO L125 PetriNetUnfolderBase]: For 234767/234767 co-relation queries the response was YES. [2024-11-08 18:21:42,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107449 conditions, 18913 events. 10156/18913 cut-off events. For 234767/234767 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 150735 event pairs, 419 based on Foata normal form. 3/18916 useless extension candidates. Maximal degree in co-relation 107341. Up to 8447 conditions per place. [2024-11-08 18:21:43,129 INFO L140 encePairwiseOnDemand]: 26/46 looper letters, 890 selfloop transitions, 1262 changer transitions 15/2169 dead transitions. [2024-11-08 18:21:43,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 2169 transitions, 29761 flow [2024-11-08 18:21:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-08 18:21:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-08 18:21:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 757 transitions. [2024-11-08 18:21:43,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2742753623188406 [2024-11-08 18:21:43,133 INFO L175 Difference]: Start difference. First operand has 298 places, 1142 transitions, 13932 flow. Second operand 60 states and 757 transitions. [2024-11-08 18:21:43,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 2169 transitions, 29761 flow [2024-11-08 18:21:46,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 2169 transitions, 25219 flow, removed 2217 selfloop flow, removed 13 redundant places. [2024-11-08 18:21:47,015 INFO L231 Difference]: Finished difference. Result has 355 places, 1810 transitions, 23345 flow [2024-11-08 18:21:47,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11472, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=655, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=23345, PETRI_PLACES=355, PETRI_TRANSITIONS=1810} [2024-11-08 18:21:47,016 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 311 predicate places. [2024-11-08 18:21:47,016 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 1810 transitions, 23345 flow [2024-11-08 18:21:47,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.941176470588236) internal successors, (456), 51 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:21:47,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:21:47,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:21:47,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:21:47,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:21:47,218 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:21:47,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:21:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1127024853, now seen corresponding path program 3 times [2024-11-08 18:21:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:21:47,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430291267] [2024-11-08 18:21:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:21:47,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:21:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:21:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:21:48,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:21:48,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430291267] [2024-11-08 18:21:48,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430291267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:21:48,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101109397] [2024-11-08 18:21:48,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:21:48,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:21:48,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:21:48,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:21:48,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:21:49,094 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 18:21:49,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:21:49,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 18:21:49,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:21:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:21:50,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:21:50,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:21:50,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-08 18:21:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:21:51,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101109397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:21:51,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:21:51,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 42 [2024-11-08 18:21:51,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152180672] [2024-11-08 18:21:51,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:21:51,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 18:21:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:21:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 18:21:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:21:52,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-11-08 18:21:52,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1810 transitions, 23345 flow. Second operand has 43 states, 43 states have (on average 9.162790697674419) internal successors, (394), 43 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:21:52,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:21:52,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-11-08 18:21:52,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:22:08,632 INFO L124 PetriNetUnfolderBase]: 10729/20225 cut-off events. [2024-11-08 18:22:08,632 INFO L125 PetriNetUnfolderBase]: For 284793/284793 co-relation queries the response was YES. [2024-11-08 18:22:08,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122273 conditions, 20225 events. 10729/20225 cut-off events. For 284793/284793 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 165764 event pairs, 497 based on Foata normal form. 4/20229 useless extension candidates. Maximal degree in co-relation 122143. Up to 10139 conditions per place. [2024-11-08 18:22:09,134 INFO L140 encePairwiseOnDemand]: 26/46 looper letters, 1075 selfloop transitions, 1327 changer transitions 13/2417 dead transitions. [2024-11-08 18:22:09,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 2417 transitions, 34857 flow [2024-11-08 18:22:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 18:22:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-08 18:22:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 615 transitions. [2024-11-08 18:22:09,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2971014492753623 [2024-11-08 18:22:09,138 INFO L175 Difference]: Start difference. First operand has 355 places, 1810 transitions, 23345 flow. Second operand 45 states and 615 transitions. [2024-11-08 18:22:09,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 2417 transitions, 34857 flow [2024-11-08 18:22:13,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 2417 transitions, 33973 flow, removed 411 selfloop flow, removed 9 redundant places. [2024-11-08 18:22:13,877 INFO L231 Difference]: Finished difference. Result has 411 places, 2129 transitions, 31912 flow [2024-11-08 18:22:13,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=22778, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=31912, PETRI_PLACES=411, PETRI_TRANSITIONS=2129} [2024-11-08 18:22:13,879 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2024-11-08 18:22:13,879 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 2129 transitions, 31912 flow [2024-11-08 18:22:13,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 9.162790697674419) internal successors, (394), 43 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:22:13,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:22:13,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:22:13,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:22:14,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:22:14,080 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:22:14,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:22:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1169922919, now seen corresponding path program 4 times [2024-11-08 18:22:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:22:14,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518550871] [2024-11-08 18:22:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:22:14,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:22:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:22:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:22:15,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:22:15,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518550871] [2024-11-08 18:22:15,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518550871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:22:15,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340677058] [2024-11-08 18:22:15,509 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:22:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:22:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:22:15,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:22:15,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:22:15,696 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:22:15,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:22:15,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 18:22:15,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:22:16,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:22:16,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-08 18:22:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:22:17,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:22:18,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:22:18,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 45 [2024-11-08 18:22:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:22:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340677058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:22:20,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:22:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 53 [2024-11-08 18:22:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632671623] [2024-11-08 18:22:20,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:22:20,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 18:22:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:22:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 18:22:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2664, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 18:22:20,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-11-08 18:22:20,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 2129 transitions, 31912 flow. Second operand has 54 states, 54 states have (on average 8.833333333333334) internal successors, (477), 54 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:22:20,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:22:20,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-11-08 18:22:20,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:22:36,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:22:53,628 INFO L124 PetriNetUnfolderBase]: 12038/23081 cut-off events. [2024-11-08 18:22:53,628 INFO L125 PetriNetUnfolderBase]: For 383034/383034 co-relation queries the response was YES. [2024-11-08 18:22:54,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152943 conditions, 23081 events. 12038/23081 cut-off events. For 383034/383034 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 197392 event pairs, 822 based on Foata normal form. 4/23085 useless extension candidates. Maximal degree in co-relation 152791. Up to 9594 conditions per place. [2024-11-08 18:22:54,235 INFO L140 encePairwiseOnDemand]: 24/46 looper letters, 1214 selfloop transitions, 1848 changer transitions 24/3088 dead transitions. [2024-11-08 18:22:54,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 3088 transitions, 49943 flow [2024-11-08 18:22:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-08 18:22:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-11-08 18:22:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 912 transitions. [2024-11-08 18:22:54,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2643478260869565 [2024-11-08 18:22:54,244 INFO L175 Difference]: Start difference. First operand has 411 places, 2129 transitions, 31912 flow. Second operand 75 states and 912 transitions. [2024-11-08 18:22:54,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 3088 transitions, 49943 flow [2024-11-08 18:23:01,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 3088 transitions, 49300 flow, removed 271 selfloop flow, removed 14 redundant places. [2024-11-08 18:23:01,369 INFO L231 Difference]: Finished difference. Result has 494 places, 2787 transitions, 47681 flow [2024-11-08 18:23:01,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=31376, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=47681, PETRI_PLACES=494, PETRI_TRANSITIONS=2787} [2024-11-08 18:23:01,372 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 450 predicate places. [2024-11-08 18:23:01,372 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 2787 transitions, 47681 flow [2024-11-08 18:23:01,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 8.833333333333334) internal successors, (477), 54 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:01,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:01,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:01,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:23:01,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:23:01,577 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:23:01,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1896918669, now seen corresponding path program 5 times [2024-11-08 18:23:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984918033] [2024-11-08 18:23:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984918033] [2024-11-08 18:23:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984918033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:23:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794518791] [2024-11-08 18:23:03,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:23:03,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:23:03,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:23:03,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:23:03,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:23:03,350 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 18:23:03,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:23:03,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 18:23:03,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:23:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:04,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:23:05,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:23:05,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2024-11-08 18:23:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794518791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:23:06,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:23:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 50 [2024-11-08 18:23:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205450008] [2024-11-08 18:23:06,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:23:06,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 18:23:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 18:23:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 18:23:06,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-11-08 18:23:06,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 2787 transitions, 47681 flow. Second operand has 51 states, 51 states have (on average 8.941176470588236) internal successors, (456), 51 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:06,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:06,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-11-08 18:23:06,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:23:38,906 INFO L124 PetriNetUnfolderBase]: 12824/24496 cut-off events. [2024-11-08 18:23:38,907 INFO L125 PetriNetUnfolderBase]: For 512535/512535 co-relation queries the response was YES. [2024-11-08 18:23:39,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184248 conditions, 24496 events. 12824/24496 cut-off events. For 512535/512535 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 210102 event pairs, 573 based on Foata normal form. 3/24499 useless extension candidates. Maximal degree in co-relation 184073. Up to 13110 conditions per place. [2024-11-08 18:23:39,636 INFO L140 encePairwiseOnDemand]: 26/46 looper letters, 1482 selfloop transitions, 1936 changer transitions 10/3430 dead transitions. [2024-11-08 18:23:39,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 3430 transitions, 63658 flow [2024-11-08 18:23:39,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 18:23:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-08 18:23:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 726 transitions. [2024-11-08 18:23:39,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27211394302848574 [2024-11-08 18:23:39,639 INFO L175 Difference]: Start difference. First operand has 494 places, 2787 transitions, 47681 flow. Second operand 58 states and 726 transitions. [2024-11-08 18:23:39,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 3430 transitions, 63658 flow [2024-11-08 18:23:53,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 3430 transitions, 62838 flow, removed 305 selfloop flow, removed 16 redundant places. [2024-11-08 18:23:53,672 INFO L231 Difference]: Finished difference. Result has 567 places, 3243 transitions, 62238 flow [2024-11-08 18:23:53,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=47012, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1013, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=62238, PETRI_PLACES=567, PETRI_TRANSITIONS=3243} [2024-11-08 18:23:53,675 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 523 predicate places. [2024-11-08 18:23:53,675 INFO L471 AbstractCegarLoop]: Abstraction has has 567 places, 3243 transitions, 62238 flow [2024-11-08 18:23:53,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.941176470588236) internal successors, (456), 51 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:53,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:23:53,676 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:23:53,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:23:53,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:23:53,877 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-08 18:23:53,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:23:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -496156077, now seen corresponding path program 6 times [2024-11-08 18:23:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:23:53,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819518798] [2024-11-08 18:23:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:23:53,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:23:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:23:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:23:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819518798] [2024-11-08 18:23:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819518798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:23:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418023335] [2024-11-08 18:23:55,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:23:55,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:23:55,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:23:55,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:23:55,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded01d0f-5bc7-4838-b8b5-ef3b8fb6ba72/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:23:55,349 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 18:23:55,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:23:55,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 18:23:55,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:23:55,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:23:55,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-08 18:23:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:56,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:23:57,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:23:57,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2024-11-08 18:23:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:23:58,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418023335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:23:58,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:23:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 50 [2024-11-08 18:23:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154523553] [2024-11-08 18:23:58,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:23:58,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 18:23:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:23:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 18:23:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 18:23:58,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2024-11-08 18:23:58,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 3243 transitions, 62238 flow. Second operand has 51 states, 51 states have (on average 8.941176470588236) internal successors, (456), 51 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:23:58,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:23:58,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2024-11-08 18:23:58,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand