./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.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_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/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_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/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_4f3cd33b-cb94-4f63-8675-68be497f61e6/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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:56:29,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:56:30,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 18:56:30,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:56:30,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:56:30,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:56:30,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:56:30,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:56:30,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:56:30,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:56:30,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:56:30,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:56:30,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:56:30,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:56:30,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:56:30,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:56:30,151 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:56:30,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:56:30,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:56:30,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:56:30,153 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 18:56:30,154 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 18:56:30,155 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 18:56:30,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:56:30,155 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 18:56:30,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:56:30,157 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:56:30,157 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:56:30,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:56:30,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:56:30,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:56:30,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:56:30,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:56:30,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:56:30,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:56:30,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:56:30,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:56:30,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:56:30,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:56:30,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:56:30,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:56:30,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:56:30,164 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_4f3cd33b-cb94-4f63-8675-68be497f61e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-11-08 18:56:30,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:56:30,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:56:30,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:56:30,529 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:56:30,529 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:56:30,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c Unable to find full path for "g++" [2024-11-08 18:56:32,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:56:33,094 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:56:33,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-08 18:56:33,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/data/f5ca7231c/f06665fe152c4b2f97a08f4e03a622ba/FLAG35fff8b5d [2024-11-08 18:56:33,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/data/f5ca7231c/f06665fe152c4b2f97a08f4e03a622ba [2024-11-08 18:56:33,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:56:33,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:56:33,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:56:33,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:56:33,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:56:33,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258464e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33, skipping insertion in model container [2024-11-08 18:56:33,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:56:33,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:56:33,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:56:33,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:56:33,491 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:56:33,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33 WrapperNode [2024-11-08 18:56:33,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:56:33,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:56:33,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:56:33,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:56:33,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,539 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-11-08 18:56:33,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:56:33,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:56:33,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:56:33,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:56:33,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,590 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:56:33,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:56:33,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:56:33,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:56:33,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:56:33,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (1/1) ... [2024-11-08 18:56:33,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:56:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:33,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:56:33,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:56:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:56:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:56:33,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:56:33,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:56:33,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:56:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:56:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:56:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:56:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:56:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:56:33,738 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 18:56:33,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:56:33,865 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:56:34,160 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:56:34,160 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:56:34,373 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:56:34,373 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:56:34,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:56:34 BoogieIcfgContainer [2024-11-08 18:56:34,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:56:34,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:56:34,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:56:34,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:56:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:56:33" (1/3) ... [2024-11-08 18:56:34,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acb2aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:56:34, skipping insertion in model container [2024-11-08 18:56:34,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:33" (2/3) ... [2024-11-08 18:56:34,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acb2aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:56:34, skipping insertion in model container [2024-11-08 18:56:34,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:56:34" (3/3) ... [2024-11-08 18:56:34,388 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-08 18:56:34,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:56:34,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:56:34,414 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:56:34,491 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:56:34,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-08 18:56:34,580 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-08 18:56:34,581 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:56:34,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-08 18:56:34,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-08 18:56:34,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-08 18:56:34,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:56:34,616 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;@13b55018, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:56:34,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 18:56:34,633 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:56:34,633 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2024-11-08 18:56:34,633 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:56:34,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:34,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:34,639 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:34,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1379860091, now seen corresponding path program 1 times [2024-11-08 18:56:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:34,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615827656] [2024-11-08 18:56:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:35,294 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 18:56:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615827656] [2024-11-08 18:56:35,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615827656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:35,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:35,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:56:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695766665] [2024-11-08 18:56:35,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:35,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:35,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-08 18:56:35,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:56:35,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:35,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-08 18:56:35,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:35,535 INFO L124 PetriNetUnfolderBase]: 88/192 cut-off events. [2024-11-08 18:56:35,536 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-08 18:56:35,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 192 events. 88/192 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 708 event pairs, 22 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 300. Up to 74 conditions per place. [2024-11-08 18:56:35,545 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 2 changer transitions 2/34 dead transitions. [2024-11-08 18:56:35,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 139 flow [2024-11-08 18:56:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:56:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-08 18:56:35,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2024-11-08 18:56:35,580 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 3 states and 63 transitions. [2024-11-08 18:56:35,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 139 flow [2024-11-08 18:56:35,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 18:56:35,603 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 64 flow [2024-11-08 18:56:35,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-08 18:56:35,618 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-08 18:56:35,621 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 64 flow [2024-11-08 18:56:35,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:56:35,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:35,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:35,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:56:35,624 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:35,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 600130603, now seen corresponding path program 1 times [2024-11-08 18:56:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11045340] [2024-11-08 18:56:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:35,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:35,885 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 18:56:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11045340] [2024-11-08 18:56:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11045340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:35,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487236839] [2024-11-08 18:56:35,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:35,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:56:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:35,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:56:35,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:56:35,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-08 18:56:35,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 18:56:35,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:35,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-08 18:56:35,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:36,161 INFO L124 PetriNetUnfolderBase]: 306/517 cut-off events. [2024-11-08 18:56:36,162 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-08 18:56:36,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 517 events. 306/517 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1936 event pairs, 159 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 559. Up to 354 conditions per place. [2024-11-08 18:56:36,173 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-11-08 18:56:36,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 145 flow [2024-11-08 18:56:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:56:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:56:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-08 18:56:36,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-11-08 18:56:36,180 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 64 flow. Second operand 4 states and 60 transitions. [2024-11-08 18:56:36,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 145 flow [2024-11-08 18:56:36,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:56:36,183 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 78 flow [2024-11-08 18:56:36,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-11-08 18:56:36,188 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2024-11-08 18:56:36,188 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 78 flow [2024-11-08 18:56:36,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 18:56:36,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:36,190 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] [2024-11-08 18:56:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:56:36,191 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:36,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:36,195 INFO L85 PathProgramCache]: Analyzing trace with hash 353635471, now seen corresponding path program 1 times [2024-11-08 18:56:36,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:36,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975995623] [2024-11-08 18:56:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:36,830 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 18:56:36,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:36,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975995623] [2024-11-08 18:56:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975995623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62536824] [2024-11-08 18:56:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:36,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:36,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:36,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:36,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:56:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:36,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:56:36,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:37,468 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 18:56:37,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:38,113 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 18:56:38,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62536824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:38,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:38,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-08 18:56:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709401163] [2024-11-08 18:56:38,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:38,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:56:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:56:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:56:38,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 18:56:38,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 78 flow. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 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 18:56:38,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:38,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 18:56:38,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:40,507 INFO L124 PetriNetUnfolderBase]: 1701/2690 cut-off events. [2024-11-08 18:56:40,508 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2024-11-08 18:56:40,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6202 conditions, 2690 events. 1701/2690 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11981 event pairs, 22 based on Foata normal form. 3/2429 useless extension candidates. Maximal degree in co-relation 2400. Up to 525 conditions per place. [2024-11-08 18:56:40,528 INFO L140 encePairwiseOnDemand]: 16/29 looper letters, 188 selfloop transitions, 83 changer transitions 48/320 dead transitions. [2024-11-08 18:56:40,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 320 transitions, 1516 flow [2024-11-08 18:56:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 18:56:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-08 18:56:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 437 transitions. [2024-11-08 18:56:40,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5022988505747127 [2024-11-08 18:56:40,536 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 78 flow. Second operand 30 states and 437 transitions. [2024-11-08 18:56:40,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 320 transitions, 1516 flow [2024-11-08 18:56:40,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 320 transitions, 1486 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-08 18:56:40,550 INFO L231 Difference]: Finished difference. Result has 80 places, 116 transitions, 782 flow [2024-11-08 18:56:40,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=782, PETRI_PLACES=80, PETRI_TRANSITIONS=116} [2024-11-08 18:56:40,552 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-11-08 18:56:40,552 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 116 transitions, 782 flow [2024-11-08 18:56:40,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 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 18:56:40,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:40,553 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] [2024-11-08 18:56:40,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:56:40,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 18:56:40,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:40,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash -99750695, now seen corresponding path program 2 times [2024-11-08 18:56:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937403412] [2024-11-08 18:56:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:41,123 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 18:56:41,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:41,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937403412] [2024-11-08 18:56:41,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937403412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682120325] [2024-11-08 18:56:41,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:56:41,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:41,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:41,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:56:41,205 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:56:41,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:41,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:56:41,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:41,380 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 18:56:41,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:41,993 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 18:56:41,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682120325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:41,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:41,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 17 [2024-11-08 18:56:41,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552460988] [2024-11-08 18:56:41,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:41,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:56:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:41,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:56:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:56:42,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 18:56:42,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 116 transitions, 782 flow. Second operand has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 0 states have call successors, (0), 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 18:56:42,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:42,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 18:56:42,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:44,720 INFO L124 PetriNetUnfolderBase]: 2071/3472 cut-off events. [2024-11-08 18:56:44,721 INFO L125 PetriNetUnfolderBase]: For 19005/19005 co-relation queries the response was YES. [2024-11-08 18:56:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14156 conditions, 3472 events. 2071/3472 cut-off events. For 19005/19005 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18490 event pairs, 19 based on Foata normal form. 190/3662 useless extension candidates. Maximal degree in co-relation 13895. Up to 669 conditions per place. [2024-11-08 18:56:44,776 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 205 selfloop transitions, 229 changer transitions 32/467 dead transitions. [2024-11-08 18:56:44,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 467 transitions, 4290 flow [2024-11-08 18:56:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:56:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-08 18:56:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 346 transitions. [2024-11-08 18:56:44,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3728448275862069 [2024-11-08 18:56:44,780 INFO L175 Difference]: Start difference. First operand has 80 places, 116 transitions, 782 flow. Second operand 32 states and 346 transitions. [2024-11-08 18:56:44,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 467 transitions, 4290 flow [2024-11-08 18:56:44,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 467 transitions, 4031 flow, removed 128 selfloop flow, removed 3 redundant places. [2024-11-08 18:56:44,935 INFO L231 Difference]: Finished difference. Result has 118 places, 321 transitions, 3285 flow [2024-11-08 18:56:44,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3285, PETRI_PLACES=118, PETRI_TRANSITIONS=321} [2024-11-08 18:56:44,940 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-11-08 18:56:44,940 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 321 transitions, 3285 flow [2024-11-08 18:56:44,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 0 states have call successors, (0), 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 18:56:44,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:44,941 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] [2024-11-08 18:56:44,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:56:45,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:45,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:45,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash 271136085, now seen corresponding path program 3 times [2024-11-08 18:56:45,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469770143] [2024-11-08 18:56:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:45,481 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 18:56:45,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469770143] [2024-11-08 18:56:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469770143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:45,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985678597] [2024-11-08 18:56:45,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:56:45,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:45,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:45,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:45,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:56:45,581 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 18:56:45,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:45,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:56:45,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:45,921 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 18:56:45,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:46,498 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 18:56:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985678597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:46,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:46,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2024-11-08 18:56:46,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727283767] [2024-11-08 18:56:46,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:46,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:56:46,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:56:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:56:46,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 18:56:46,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 321 transitions, 3285 flow. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 0 states have call successors, (0), 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 18:56:46,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:46,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 18:56:46,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:49,042 INFO L124 PetriNetUnfolderBase]: 3036/5128 cut-off events. [2024-11-08 18:56:49,043 INFO L125 PetriNetUnfolderBase]: For 48754/48754 co-relation queries the response was YES. [2024-11-08 18:56:49,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26833 conditions, 5128 events. 3036/5128 cut-off events. For 48754/48754 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 30183 event pairs, 129 based on Foata normal form. 307/5435 useless extension candidates. Maximal degree in co-relation 26765. Up to 1288 conditions per place. [2024-11-08 18:56:49,133 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 287 selfloop transitions, 332 changer transitions 6/626 dead transitions. [2024-11-08 18:56:49,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 626 transitions, 7506 flow [2024-11-08 18:56:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:56:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 18:56:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 240 transitions. [2024-11-08 18:56:49,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39408866995073893 [2024-11-08 18:56:49,137 INFO L175 Difference]: Start difference. First operand has 118 places, 321 transitions, 3285 flow. Second operand 21 states and 240 transitions. [2024-11-08 18:56:49,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 626 transitions, 7506 flow [2024-11-08 18:56:49,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 626 transitions, 6855 flow, removed 154 selfloop flow, removed 11 redundant places. [2024-11-08 18:56:49,587 INFO L231 Difference]: Finished difference. Result has 130 places, 473 transitions, 5822 flow [2024-11-08 18:56:49,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5822, PETRI_PLACES=130, PETRI_TRANSITIONS=473} [2024-11-08 18:56:49,592 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-11-08 18:56:49,593 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 473 transitions, 5822 flow [2024-11-08 18:56:49,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 0 states have call successors, (0), 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 18:56:49,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:49,594 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:49,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:56:49,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:49,799 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:49,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 770883657, now seen corresponding path program 4 times [2024-11-08 18:56:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:49,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153131772] [2024-11-08 18:56:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:49,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:50,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:50,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153131772] [2024-11-08 18:56:50,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153131772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:50,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146960084] [2024-11-08 18:56:50,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:56:50,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:50,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:50,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:50,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:56:50,298 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:56:50,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:50,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:56:50,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:50,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146960084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:50,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:50,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2024-11-08 18:56:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814314872] [2024-11-08 18:56:50,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:50,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:56:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:56:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:56:50,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 18:56:50,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 473 transitions, 5822 flow. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 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 18:56:50,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:50,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 18:56:50,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:55,121 INFO L124 PetriNetUnfolderBase]: 5365/9211 cut-off events. [2024-11-08 18:56:55,121 INFO L125 PetriNetUnfolderBase]: For 94943/94967 co-relation queries the response was YES. [2024-11-08 18:56:55,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55223 conditions, 9211 events. 5365/9211 cut-off events. For 94943/94967 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 62383 event pairs, 238 based on Foata normal form. 78/9277 useless extension candidates. Maximal degree in co-relation 53441. Up to 1742 conditions per place. [2024-11-08 18:56:55,237 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 354 selfloop transitions, 678 changer transitions 6/1087 dead transitions. [2024-11-08 18:56:55,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1087 transitions, 15550 flow [2024-11-08 18:56:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 18:56:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-08 18:56:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 333 transitions. [2024-11-08 18:56:55,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4416445623342175 [2024-11-08 18:56:55,243 INFO L175 Difference]: Start difference. First operand has 130 places, 473 transitions, 5822 flow. Second operand 26 states and 333 transitions. [2024-11-08 18:56:55,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1087 transitions, 15550 flow [2024-11-08 18:56:56,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 1087 transitions, 15151 flow, removed 184 selfloop flow, removed 5 redundant places. [2024-11-08 18:56:56,278 INFO L231 Difference]: Finished difference. Result has 167 places, 894 transitions, 14278 flow [2024-11-08 18:56:56,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=14278, PETRI_PLACES=167, PETRI_TRANSITIONS=894} [2024-11-08 18:56:56,280 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-11-08 18:56:56,280 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 894 transitions, 14278 flow [2024-11-08 18:56:56,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 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 18:56:56,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:56,281 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:56,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:56,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:56,482 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:56:56,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1216731933, now seen corresponding path program 5 times [2024-11-08 18:56:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426950977] [2024-11-08 18:56:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:56,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426950977] [2024-11-08 18:56:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426950977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339930315] [2024-11-08 18:56:56,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:56:56,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:56,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:56,844 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:56,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:56:56,923 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:56:56,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:56,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:56:56,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:57,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339930315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:57,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-08 18:56:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485457889] [2024-11-08 18:56:57,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:57,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:56:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:57,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:56:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:56:57,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 18:56:57,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 894 transitions, 14278 flow. Second operand has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 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 18:56:57,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:57,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 18:56:57,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:57:02,861 INFO L124 PetriNetUnfolderBase]: 6306/10792 cut-off events. [2024-11-08 18:57:02,862 INFO L125 PetriNetUnfolderBase]: For 144969/145005 co-relation queries the response was YES. [2024-11-08 18:57:02,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74539 conditions, 10792 events. 6306/10792 cut-off events. For 144969/145005 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 74830 event pairs, 147 based on Foata normal form. 60/10840 useless extension candidates. Maximal degree in co-relation 72432. Up to 2092 conditions per place. [2024-11-08 18:57:03,009 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 323 selfloop transitions, 1009 changer transitions 1/1380 dead transitions. [2024-11-08 18:57:03,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1380 transitions, 24032 flow [2024-11-08 18:57:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 18:57:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-08 18:57:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 321 transitions. [2024-11-08 18:57:03,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2024-11-08 18:57:03,012 INFO L175 Difference]: Start difference. First operand has 167 places, 894 transitions, 14278 flow. Second operand 30 states and 321 transitions. [2024-11-08 18:57:03,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 1380 transitions, 24032 flow [2024-11-08 18:57:05,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1380 transitions, 23274 flow, removed 379 selfloop flow, removed 0 redundant places. [2024-11-08 18:57:05,413 INFO L231 Difference]: Finished difference. Result has 199 places, 1212 transitions, 21695 flow [2024-11-08 18:57:05,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=13609, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=683, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=21695, PETRI_PLACES=199, PETRI_TRANSITIONS=1212} [2024-11-08 18:57:05,414 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-11-08 18:57:05,414 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 1212 transitions, 21695 flow [2024-11-08 18:57:05,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 17 states have internal predecessors, (129), 0 states have call successors, (0), 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 18:57:05,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:57:05,415 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:57:05,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:57:05,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:05,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:57:05,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1782035225, now seen corresponding path program 6 times [2024-11-08 18:57:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:05,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995674335] [2024-11-08 18:57:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:05,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995674335] [2024-11-08 18:57:05,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995674335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:06,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086252271] [2024-11-08 18:57:06,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:57:06,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:06,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:06,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:06,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:57:06,075 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-08 18:57:06,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:57:06,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:57:06,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:06,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:06,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086252271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:06,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:06,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-08 18:57:06,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256953022] [2024-11-08 18:57:06,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:06,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:57:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:57:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:57:06,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 18:57:06,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1212 transitions, 21695 flow. Second operand has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:06,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:57:06,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 18:57:06,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:57:21,208 INFO L124 PetriNetUnfolderBase]: 11718/19995 cut-off events. [2024-11-08 18:57:21,209 INFO L125 PetriNetUnfolderBase]: For 314240/314283 co-relation queries the response was YES. [2024-11-08 18:57:21,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149109 conditions, 19995 events. 11718/19995 cut-off events. For 314240/314283 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 152027 event pairs, 353 based on Foata normal form. 137/20114 useless extension candidates. Maximal degree in co-relation 147856. Up to 3941 conditions per place. [2024-11-08 18:57:21,489 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 725 selfloop transitions, 2130 changer transitions 1/2903 dead transitions. [2024-11-08 18:57:21,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 2903 transitions, 56283 flow [2024-11-08 18:57:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 18:57:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-08 18:57:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 638 transitions. [2024-11-08 18:57:21,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-08 18:57:21,493 INFO L175 Difference]: Start difference. First operand has 199 places, 1212 transitions, 21695 flow. Second operand 49 states and 638 transitions. [2024-11-08 18:57:21,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 2903 transitions, 56283 flow [2024-11-08 18:57:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 2903 transitions, 54692 flow, removed 781 selfloop flow, removed 2 redundant places. [2024-11-08 18:57:30,596 INFO L231 Difference]: Finished difference. Result has 274 places, 2509 transitions, 52649 flow [2024-11-08 18:57:30,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=21050, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=926, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=52649, PETRI_PLACES=274, PETRI_TRANSITIONS=2509} [2024-11-08 18:57:30,598 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-11-08 18:57:30,598 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 2509 transitions, 52649 flow [2024-11-08 18:57:30,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:30,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:57:30,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:57:30,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:57:30,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:30,801 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:57:30,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1278570935, now seen corresponding path program 7 times [2024-11-08 18:57:30,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916420065] [2024-11-08 18:57:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:30,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:31,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916420065] [2024-11-08 18:57:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916420065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304496942] [2024-11-08 18:57:31,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:57:31,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:31,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:31,166 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:31,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:57:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:31,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:57:31,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:31,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:31,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304496942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:31,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2024-11-08 18:57:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513302792] [2024-11-08 18:57:31,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:31,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:57:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:57:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:57:31,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 18:57:31,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 2509 transitions, 52649 flow. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:31,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:57:31,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 18:57:31,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:57:54,192 INFO L124 PetriNetUnfolderBase]: 14818/24830 cut-off events. [2024-11-08 18:57:54,193 INFO L125 PetriNetUnfolderBase]: For 497401/497401 co-relation queries the response was YES. [2024-11-08 18:57:54,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206746 conditions, 24830 events. 14818/24830 cut-off events. For 497401/497401 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 188870 event pairs, 426 based on Foata normal form. 104/24934 useless extension candidates. Maximal degree in co-relation 205275. Up to 4823 conditions per place. [2024-11-08 18:57:54,577 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 758 selfloop transitions, 2778 changer transitions 0/3537 dead transitions. [2024-11-08 18:57:54,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 3537 transitions, 79637 flow [2024-11-08 18:57:54,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 18:57:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-08 18:57:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 432 transitions. [2024-11-08 18:57:54,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39201451905626133 [2024-11-08 18:57:54,580 INFO L175 Difference]: Start difference. First operand has 274 places, 2509 transitions, 52649 flow. Second operand 38 states and 432 transitions. [2024-11-08 18:57:54,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 3537 transitions, 79637 flow [2024-11-08 18:58:14,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 3537 transitions, 78402 flow, removed 563 selfloop flow, removed 5 redundant places. [2024-11-08 18:58:14,482 INFO L231 Difference]: Finished difference. Result has 332 places, 3221 transitions, 77619 flow [2024-11-08 18:58:14,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=51742, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2086, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=77619, PETRI_PLACES=332, PETRI_TRANSITIONS=3221} [2024-11-08 18:58:14,485 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 303 predicate places. [2024-11-08 18:58:14,485 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 3221 transitions, 77619 flow [2024-11-08 18:58:14,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:58:14,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:58:14,486 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:58:14,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:58:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:58:14,687 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:58:14,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:58:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash -98299017, now seen corresponding path program 8 times [2024-11-08 18:58:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:58:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994207353] [2024-11-08 18:58:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:58:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:58:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:58:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:58:14,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:58:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994207353] [2024-11-08 18:58:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994207353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:58:14,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428049870] [2024-11-08 18:58:14,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:58:14,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:58:14,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:58:14,997 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:58:14,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:58:15,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:58:15,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:58:15,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:58:15,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:58:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:58:15,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:58:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:58:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428049870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:58:15,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:58:15,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-08 18:58:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509461702] [2024-11-08 18:58:15,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:58:15,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:58:15,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:58:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:58:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:58:15,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 18:58:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 3221 transitions, 77619 flow. Second operand has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 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 18:58:15,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:58:15,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 18:58:15,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:58:49,180 INFO L124 PetriNetUnfolderBase]: 14663/24977 cut-off events. [2024-11-08 18:58:49,180 INFO L125 PetriNetUnfolderBase]: For 676815/676870 co-relation queries the response was YES. [2024-11-08 18:58:49,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232407 conditions, 24977 events. 14663/24977 cut-off events. For 676815/676870 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 195916 event pairs, 544 based on Foata normal form. 23/24976 useless extension candidates. Maximal degree in co-relation 230880. Up to 4928 conditions per place. [2024-11-08 18:58:49,719 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 1237 selfloop transitions, 2334 changer transitions 5/3631 dead transitions. [2024-11-08 18:58:49,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 3631 transitions, 92999 flow [2024-11-08 18:58:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:58:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 18:58:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 314 transitions. [2024-11-08 18:58:49,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43310344827586206 [2024-11-08 18:58:49,724 INFO L175 Difference]: Start difference. First operand has 332 places, 3221 transitions, 77619 flow. Second operand 25 states and 314 transitions. [2024-11-08 18:58:49,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 3631 transitions, 92999 flow [2024-11-08 18:59:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 3631 transitions, 92343 flow, removed 328 selfloop flow, removed 0 redundant places. [2024-11-08 18:59:23,412 INFO L231 Difference]: Finished difference. Result has 369 places, 3465 transitions, 90668 flow [2024-11-08 18:59:23,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=77039, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2095, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=990, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=90668, PETRI_PLACES=369, PETRI_TRANSITIONS=3465} [2024-11-08 18:59:23,416 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 340 predicate places. [2024-11-08 18:59:23,416 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 3465 transitions, 90668 flow [2024-11-08 18:59:23,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 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 18:59:23,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:59:23,417 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:59:23,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:59:23,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:59:23,617 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 18:59:23,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:59:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash -672408507, now seen corresponding path program 9 times [2024-11-08 18:59:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:59:23,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777382384] [2024-11-08 18:59:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:59:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:59:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777382384] [2024-11-08 18:59:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777382384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:59:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440469061] [2024-11-08 18:59:23,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:59:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:59:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:59:23,883 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:59:23,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:59:23,955 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 18:59:23,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:59:23,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:59:23,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:59:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:24,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:59:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440469061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:59:24,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:59:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-08 18:59:24,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047607731] [2024-11-08 18:59:24,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:59:24,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:59:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:59:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:59:24,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:59:24,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 18:59:24,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 3465 transitions, 90668 flow. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:24,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:59:24,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 18:59:24,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:00:01,309 INFO L124 PetriNetUnfolderBase]: 15356/26013 cut-off events. [2024-11-08 19:00:01,309 INFO L125 PetriNetUnfolderBase]: For 856762/856817 co-relation queries the response was YES. [2024-11-08 19:00:01,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264931 conditions, 26013 events. 15356/26013 cut-off events. For 856762/856817 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 203560 event pairs, 817 based on Foata normal form. 51/26028 useless extension candidates. Maximal degree in co-relation 264796. Up to 5209 conditions per place. [2024-11-08 19:00:01,903 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 1239 selfloop transitions, 2580 changer transitions 8/3882 dead transitions. [2024-11-08 19:00:01,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 3882 transitions, 108101 flow [2024-11-08 19:00:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 19:00:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-08 19:00:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 275 transitions. [2024-11-08 19:00:01,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-11-08 19:00:01,905 INFO L175 Difference]: Start difference. First operand has 369 places, 3465 transitions, 90668 flow. Second operand 22 states and 275 transitions. [2024-11-08 19:00:01,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 3882 transitions, 108101 flow [2024-11-08 19:00:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 3882 transitions, 107357 flow, removed 175 selfloop flow, removed 4 redundant places. [2024-11-08 19:00:45,343 INFO L231 Difference]: Finished difference. Result has 391 places, 3726 transitions, 106212 flow [2024-11-08 19:00:45,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=89604, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=106212, PETRI_PLACES=391, PETRI_TRANSITIONS=3726} [2024-11-08 19:00:45,346 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 362 predicate places. [2024-11-08 19:00:45,346 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 3726 transitions, 106212 flow [2024-11-08 19:00:45,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 15 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:45,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:00:45,347 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:45,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 19:00:45,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 19:00:45,548 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:00:45,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash -506880597, now seen corresponding path program 10 times [2024-11-08 19:00:45,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:45,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316027145] [2024-11-08 19:00:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:45,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316027145] [2024-11-08 19:00:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316027145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936247744] [2024-11-08 19:00:45,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 19:00:45,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:45,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:45,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:00:45,875 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 19:00:45,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:00:45,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 19:00:45,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:46,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:46,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936247744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:46,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:46,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-08 19:00:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145543139] [2024-11-08 19:00:46,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:46,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:00:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:00:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:00:46,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 19:00:46,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 3726 transitions, 106212 flow. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 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 19:00:46,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:00:46,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 19:00:46,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:01:28,283 INFO L124 PetriNetUnfolderBase]: 15279/25866 cut-off events. [2024-11-08 19:01:28,284 INFO L125 PetriNetUnfolderBase]: For 1018483/1018538 co-relation queries the response was YES. [2024-11-08 19:01:28,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283527 conditions, 25866 events. 15279/25866 cut-off events. For 1018483/1018538 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 201761 event pairs, 970 based on Foata normal form. 35/25859 useless extension candidates. Maximal degree in co-relation 283386. Up to 6332 conditions per place. [2024-11-08 19:01:28,938 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 799 selfloop transitions, 2965 changer transitions 9/3828 dead transitions. [2024-11-08 19:01:28,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 3828 transitions, 115118 flow [2024-11-08 19:01:28,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 19:01:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 19:01:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 210 transitions. [2024-11-08 19:01:28,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4259634888438134 [2024-11-08 19:01:28,940 INFO L175 Difference]: Start difference. First operand has 391 places, 3726 transitions, 106212 flow. Second operand 17 states and 210 transitions. [2024-11-08 19:01:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 3828 transitions, 115118 flow [2024-11-08 19:02:08,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 3828 transitions, 114694 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-11-08 19:02:08,765 INFO L231 Difference]: Finished difference. Result has 404 places, 3757 transitions, 116906 flow [2024-11-08 19:02:08,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=105674, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2926, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=116906, PETRI_PLACES=404, PETRI_TRANSITIONS=3757} [2024-11-08 19:02:08,768 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 375 predicate places. [2024-11-08 19:02:08,768 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 3757 transitions, 116906 flow [2024-11-08 19:02:08,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 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 19:02:08,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:02:08,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:02:08,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 19:02:08,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 19:02:08,969 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:02:08,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:02:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1974528165, now seen corresponding path program 11 times [2024-11-08 19:02:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:02:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528437340] [2024-11-08 19:02:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:02:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:02:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:02:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:02:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528437340] [2024-11-08 19:02:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528437340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:02:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302687808] [2024-11-08 19:02:09,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 19:02:09,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:02:09,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:02:09,228 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:02:09,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:02:09,301 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 19:02:09,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:02:09,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 19:02:09,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:02:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:09,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:02:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:02:09,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302687808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:02:09,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:02:09,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-08 19:02:09,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843322606] [2024-11-08 19:02:09,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:02:09,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:02:09,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:02:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:02:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:02:09,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-08 19:02:09,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 3757 transitions, 116906 flow. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 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 19:02:09,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:02:09,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-08 19:02:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:03:17,829 INFO L124 PetriNetUnfolderBase]: 21838/36331 cut-off events. [2024-11-08 19:03:17,829 INFO L125 PetriNetUnfolderBase]: For 1599721/1599721 co-relation queries the response was YES. [2024-11-08 19:03:18,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428468 conditions, 36331 events. 21838/36331 cut-off events. For 1599721/1599721 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 288782 event pairs, 569 based on Foata normal form. 268/36599 useless extension candidates. Maximal degree in co-relation 428324. Up to 7368 conditions per place. [2024-11-08 19:03:18,835 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 1847 selfloop transitions, 4050 changer transitions 19/5917 dead transitions. [2024-11-08 19:03:18,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 5917 transitions, 193162 flow [2024-11-08 19:03:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-08 19:03:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-08 19:03:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 548 transitions. [2024-11-08 19:03:18,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4020542920029347 [2024-11-08 19:03:18,838 INFO L175 Difference]: Start difference. First operand has 404 places, 3757 transitions, 116906 flow. Second operand 47 states and 548 transitions. [2024-11-08 19:03:18,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 5917 transitions, 193162 flow [2024-11-08 19:04:54,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 5917 transitions, 192292 flow, removed 139 selfloop flow, removed 8 redundant places. [2024-11-08 19:04:54,268 INFO L231 Difference]: Finished difference. Result has 476 places, 5369 transitions, 184684 flow [2024-11-08 19:04:54,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=115852, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=184684, PETRI_PLACES=476, PETRI_TRANSITIONS=5369} [2024-11-08 19:04:54,272 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 447 predicate places. [2024-11-08 19:04:54,272 INFO L471 AbstractCegarLoop]: Abstraction has has 476 places, 5369 transitions, 184684 flow [2024-11-08 19:04:54,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 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 19:04:54,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:04:54,273 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:04:54,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 19:04:54,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:04:54,474 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:04:54,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:04:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2009892881, now seen corresponding path program 12 times [2024-11-08 19:04:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:04:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583473634] [2024-11-08 19:04:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:04:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:04:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:04:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:04:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583473634] [2024-11-08 19:04:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583473634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:04:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6764861] [2024-11-08 19:04:54,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 19:04:54,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:04:54,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:04:54,741 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:04:54,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:04:54,814 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 19:04:54,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:04:54,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 19:04:54,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:04:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:04:55,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:04:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:04:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6764861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:04:55,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:04:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-08 19:04:55,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262003148] [2024-11-08 19:04:55,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:04:55,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 19:04:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:04:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 19:04:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-08 19:04:55,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 19:04:55,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 5369 transitions, 184684 flow. Second operand has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 18 states have internal predecessors, (139), 0 states have call successors, (0), 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 19:04:55,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:04:55,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 19:04:55,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:06:16,049 INFO L124 PetriNetUnfolderBase]: 20828/35134 cut-off events. [2024-11-08 19:06:16,049 INFO L125 PetriNetUnfolderBase]: For 2042237/2042274 co-relation queries the response was YES. [2024-11-08 19:06:16,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463214 conditions, 35134 events. 20828/35134 cut-off events. For 2042237/2042274 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 284723 event pairs, 908 based on Foata normal form. 31/35133 useless extension candidates. Maximal degree in co-relation 463035. Up to 7288 conditions per place. [2024-11-08 19:06:17,141 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 830 selfloop transitions, 4694 changer transitions 7/5655 dead transitions. [2024-11-08 19:06:17,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 5655 transitions, 202430 flow [2024-11-08 19:06:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 19:06:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 19:06:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 319 transitions. [2024-11-08 19:06:17,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-08 19:06:17,143 INFO L175 Difference]: Start difference. First operand has 476 places, 5369 transitions, 184684 flow. Second operand 27 states and 319 transitions. [2024-11-08 19:06:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 5655 transitions, 202430 flow [2024-11-08 19:08:02,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 5655 transitions, 200616 flow, removed 839 selfloop flow, removed 3 redundant places. [2024-11-08 19:08:03,035 INFO L231 Difference]: Finished difference. Result has 507 places, 5505 transitions, 202213 flow [2024-11-08 19:08:03,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=182577, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=202213, PETRI_PLACES=507, PETRI_TRANSITIONS=5505} [2024-11-08 19:08:03,038 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 478 predicate places. [2024-11-08 19:08:03,039 INFO L471 AbstractCegarLoop]: Abstraction has has 507 places, 5505 transitions, 202213 flow [2024-11-08 19:08:03,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 18 states have internal predecessors, (139), 0 states have call successors, (0), 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 19:08:03,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:08:03,039 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:03,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 19:08:03,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 19:08:03,240 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:08:03,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1698048295, now seen corresponding path program 13 times [2024-11-08 19:08:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618005864] [2024-11-08 19:08:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:03,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:03,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618005864] [2024-11-08 19:08:03,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618005864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:08:03,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146442507] [2024-11-08 19:08:03,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 19:08:03,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:08:03,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:08:03,540 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:08:03,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3cd33b-cb94-4f63-8675-68be497f61e6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 19:08:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:03,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 19:08:03,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:08:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:03,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:08:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:04,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146442507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:08:04,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:08:04,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-08 19:08:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762184318] [2024-11-08 19:08:04,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:08:04,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 19:08:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:04,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 19:08:04,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-08 19:08:04,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-08 19:08:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 5505 transitions, 202213 flow. Second operand has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 19 states have internal predecessors, (147), 0 states have call successors, (0), 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 19:08:04,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:08:04,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-08 19:08:04,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand