./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:01:28,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:01:28,330 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:01:28,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:01:28,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:01:28,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:01:28,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:01:28,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:01:28,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:01:28,360 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:01:28,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:01:28,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:01:28,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:01:28,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:01:28,363 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:01:28,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:01:28,364 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:01:28,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:01:28,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:01:28,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:01:28,366 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:01:28,368 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:01:28,369 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:01:28,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:01:28,369 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:01:28,370 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:01:28,370 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:01:28,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:01:28,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:01:28,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:01:28,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:01:28,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:01:28,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:28,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:01:28,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:01:28,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:01:28,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:01:28,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:01:28,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:01:28,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:01:28,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:01:28,374 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_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2023-11-29 01:01:28,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:01:28,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:01:28,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:01:28,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:01:28,636 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:01:28,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2023-11-29 01:01:31,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:01:31,778 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:01:31,779 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2023-11-29 01:01:31,786 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/data/8c6942920/452af6729e304787b6480b2e4931833a/FLAG5d8114540 [2023-11-29 01:01:31,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/data/8c6942920/452af6729e304787b6480b2e4931833a [2023-11-29 01:01:31,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:01:31,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:01:31,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:31,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:01:31,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:01:31,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:31" (1/1) ... [2023-11-29 01:01:31,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f86254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:31, skipping insertion in model container [2023-11-29 01:01:31,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:31" (1/1) ... [2023-11-29 01:01:31,837 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:01:31,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:32,000 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:01:32,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:32,033 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:01:32,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32 WrapperNode [2023-11-29 01:01:32,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:32,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:32,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:01:32,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:01:32,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,067 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-29 01:01:32,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:32,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:01:32,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:01:32,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:01:32,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,098 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 01:01:32,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:01:32,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:01:32,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:01:32,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:01:32,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (1/1) ... [2023-11-29 01:01:32,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:32,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:01:32,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:01:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:01:32,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:01:32,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:01:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:01:32,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:01:32,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:01:32,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:01:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:01:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:01:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:01:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:01:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:01:32,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:01:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:01:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:01:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:01:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:01:32,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:01:32,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:01:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:01:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:01:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:01:32,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:01:32,185 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:01:32,301 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:01:32,303 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:01:32,524 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:01:32,664 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:01:32,665 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 01:01:32,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:32 BoogieIcfgContainer [2023-11-29 01:01:32,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:01:32,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:01:32,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:01:32,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:01:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:01:31" (1/3) ... [2023-11-29 01:01:32,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4804ff9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:32, skipping insertion in model container [2023-11-29 01:01:32,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:32" (2/3) ... [2023-11-29 01:01:32,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4804ff9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:32, skipping insertion in model container [2023-11-29 01:01:32,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:32" (3/3) ... [2023-11-29 01:01:32,675 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-11-29 01:01:32,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:01:32,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 01:01:32,696 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:01:32,745 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:01:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 115 flow [2023-11-29 01:01:32,835 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2023-11-29 01:01:32,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 01:01:32,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 3/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-29 01:01:32,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 47 transitions, 115 flow [2023-11-29 01:01:32,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 43 transitions, 104 flow [2023-11-29 01:01:32,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:01:32,860 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55ddcce9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:01:32,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 01:01:32,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:01:32,863 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 01:01:32,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:01:32,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:32,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 01:01:32,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:32,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash 9893, now seen corresponding path program 1 times [2023-11-29 01:01:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:32,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461825799] [2023-11-29 01:01:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:32,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461825799] [2023-11-29 01:01:33,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461825799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:33,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:33,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:33,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761524131] [2023-11-29 01:01:33,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:33,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:33,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:33,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-29 01:01:33,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:33,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-29 01:01:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:33,398 INFO L124 PetriNetUnfolderBase]: 280/493 cut-off events. [2023-11-29 01:01:33,398 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-29 01:01:33,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 493 events. 280/493 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1658 event pairs, 178 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 792. Up to 401 conditions per place. [2023-11-29 01:01:33,407 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-29 01:01:33,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 140 flow [2023-11-29 01:01:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-29 01:01:33,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2023-11-29 01:01:33,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-29 01:01:33,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-29 01:01:33,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:33,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-29 01:01:33,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,433 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 104 flow. Second operand 3 states and 88 transitions. [2023-11-29 01:01:33,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 140 flow [2023-11-29 01:01:33,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:01:33,440 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 86 flow [2023-11-29 01:01:33,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-29 01:01:33,446 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-11-29 01:01:33,446 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 86 flow [2023-11-29 01:01:33,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:33,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 01:01:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:01:33,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:33,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 9894, now seen corresponding path program 1 times [2023-11-29 01:01:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:33,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628160767] [2023-11-29 01:01:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:33,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628160767] [2023-11-29 01:01:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628160767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:33,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594298520] [2023-11-29 01:01:33,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:33,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:33,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-29 01:01:33,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:33,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-29 01:01:33,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:33,690 INFO L124 PetriNetUnfolderBase]: 199/368 cut-off events. [2023-11-29 01:01:33,690 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-29 01:01:33,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 368 events. 199/368 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1205 event pairs, 124 based on Foata normal form. 28/281 useless extension candidates. Maximal degree in co-relation 671. Up to 292 conditions per place. [2023-11-29 01:01:33,695 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-29 01:01:33,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 122 flow [2023-11-29 01:01:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-29 01:01:33,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-29 01:01:33,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-29 01:01:33,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-29 01:01:33,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:33,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-29 01:01:33,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,700 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 86 flow. Second operand 3 states and 91 transitions. [2023-11-29 01:01:33,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 122 flow [2023-11-29 01:01:33,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:33,702 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 83 flow [2023-11-29 01:01:33,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-29 01:01:33,703 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-11-29 01:01:33,703 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 83 flow [2023-11-29 01:01:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:33,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:01:33,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:01:33,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:33,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:33,705 INFO L85 PathProgramCache]: Analyzing trace with hash 294989954, now seen corresponding path program 1 times [2023-11-29 01:01:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133951767] [2023-11-29 01:01:33,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:33,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:33,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:33,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133951767] [2023-11-29 01:01:33,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133951767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:33,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:33,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:33,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894927955] [2023-11-29 01:01:33,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:33,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-29 01:01:33,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:33,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-29 01:01:33,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:33,874 INFO L124 PetriNetUnfolderBase]: 220/389 cut-off events. [2023-11-29 01:01:33,874 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 01:01:33,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 389 events. 220/389 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1199 event pairs, 138 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 725. Up to 325 conditions per place. [2023-11-29 01:01:33,878 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-29 01:01:33,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 123 flow [2023-11-29 01:01:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-29 01:01:33,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-11-29 01:01:33,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-29 01:01:33,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-29 01:01:33,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:33,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-29 01:01:33,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,883 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 83 flow. Second operand 3 states and 87 transitions. [2023-11-29 01:01:33,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 123 flow [2023-11-29 01:01:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:33,885 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 80 flow [2023-11-29 01:01:33,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-29 01:01:33,886 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2023-11-29 01:01:33,886 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 80 flow [2023-11-29 01:01:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:33,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:01:33,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:01:33,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:33,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash 294989955, now seen corresponding path program 1 times [2023-11-29 01:01:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978340697] [2023-11-29 01:01:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978340697] [2023-11-29 01:01:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978340697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:33,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:33,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824814940] [2023-11-29 01:01:33,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:33,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:33,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-29 01:01:33,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:33,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:33,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-29 01:01:33,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:34,053 INFO L124 PetriNetUnfolderBase]: 199/352 cut-off events. [2023-11-29 01:01:34,053 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-29 01:01:34,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 352 events. 199/352 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1078 event pairs, 124 based on Foata normal form. 9/262 useless extension candidates. Maximal degree in co-relation 655. Up to 292 conditions per place. [2023-11-29 01:01:34,057 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-29 01:01:34,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 116 flow [2023-11-29 01:01:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-29 01:01:34,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-29 01:01:34,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-29 01:01:34,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-29 01:01:34,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:34,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-29 01:01:34,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,061 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 80 flow. Second operand 3 states and 91 transitions. [2023-11-29 01:01:34,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 116 flow [2023-11-29 01:01:34,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:34,063 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 77 flow [2023-11-29 01:01:34,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-29 01:01:34,064 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-11-29 01:01:34,064 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 77 flow [2023-11-29 01:01:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:34,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:01:34,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:34,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 542902329, now seen corresponding path program 1 times [2023-11-29 01:01:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87219740] [2023-11-29 01:01:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87219740] [2023-11-29 01:01:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87219740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:34,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:34,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:34,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887731815] [2023-11-29 01:01:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:34,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:34,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:34,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-29 01:01:34,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:34,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-29 01:01:34,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:34,205 INFO L124 PetriNetUnfolderBase]: 220/369 cut-off events. [2023-11-29 01:01:34,205 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-29 01:01:34,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 369 events. 220/369 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1062 event pairs, 138 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 705. Up to 325 conditions per place. [2023-11-29 01:01:34,209 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-29 01:01:34,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 117 flow [2023-11-29 01:01:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-29 01:01:34,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-11-29 01:01:34,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-29 01:01:34,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-29 01:01:34,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:34,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-29 01:01:34,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,214 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 77 flow. Second operand 3 states and 87 transitions. [2023-11-29 01:01:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 117 flow [2023-11-29 01:01:34,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:34,215 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 74 flow [2023-11-29 01:01:34,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-29 01:01:34,216 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2023-11-29 01:01:34,217 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 74 flow [2023-11-29 01:01:34,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:34,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:34,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:01:34,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:34,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash 542902330, now seen corresponding path program 1 times [2023-11-29 01:01:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267324063] [2023-11-29 01:01:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:34,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:34,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:34,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267324063] [2023-11-29 01:01:34,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267324063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:34,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:34,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:01:34,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272171480] [2023-11-29 01:01:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:34,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:34,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:34,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-29 01:01:34,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:34,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-29 01:01:34,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:34,381 INFO L124 PetriNetUnfolderBase]: 199/336 cut-off events. [2023-11-29 01:01:34,381 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-29 01:01:34,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 336 events. 199/336 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 956 event pairs, 124 based on Foata normal form. 11/264 useless extension candidates. Maximal degree in co-relation 639. Up to 292 conditions per place. [2023-11-29 01:01:34,384 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-29 01:01:34,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 110 flow [2023-11-29 01:01:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-29 01:01:34,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-29 01:01:34,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-29 01:01:34,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-29 01:01:34,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:34,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-29 01:01:34,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,388 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 3 states and 91 transitions. [2023-11-29 01:01:34,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 110 flow [2023-11-29 01:01:34,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:34,389 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 71 flow [2023-11-29 01:01:34,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-29 01:01:34,390 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2023-11-29 01:01:34,391 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 71 flow [2023-11-29 01:01:34,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:34,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:34,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:01:34,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:34,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1724716316, now seen corresponding path program 1 times [2023-11-29 01:01:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615534528] [2023-11-29 01:01:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615534528] [2023-11-29 01:01:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615534528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071239968] [2023-11-29 01:01:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:34,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:34,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:34,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:34,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:34,946 INFO L124 PetriNetUnfolderBase]: 386/615 cut-off events. [2023-11-29 01:01:34,947 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2023-11-29 01:01:34,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 615 events. 386/615 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2185 event pairs, 124 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 1200. Up to 349 conditions per place. [2023-11-29 01:01:34,953 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2023-11-29 01:01:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 184 flow [2023-11-29 01:01:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:01:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:01:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-29 01:01:34,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8014184397163121 [2023-11-29 01:01:34,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-29 01:01:34,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-29 01:01:34,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:34,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-29 01:01:34,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,958 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 71 flow. Second operand 3 states and 113 transitions. [2023-11-29 01:01:34,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 184 flow [2023-11-29 01:01:34,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:34,960 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 96 flow [2023-11-29 01:01:34,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-29 01:01:34,961 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-11-29 01:01:34,961 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 96 flow [2023-11-29 01:01:34,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:34,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:34,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:34,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:01:34,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:34,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash 205496359, now seen corresponding path program 1 times [2023-11-29 01:01:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:34,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111136220] [2023-11-29 01:01:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111136220] [2023-11-29 01:01:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111136220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:35,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413748918] [2023-11-29 01:01:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:35,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:35,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:35,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:35,341 INFO L124 PetriNetUnfolderBase]: 520/789 cut-off events. [2023-11-29 01:01:35,341 INFO L125 PetriNetUnfolderBase]: For 163/167 co-relation queries the response was YES. [2023-11-29 01:01:35,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 789 events. 520/789 cut-off events. For 163/167 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2814 event pairs, 156 based on Foata normal form. 16/791 useless extension candidates. Maximal degree in co-relation 1862. Up to 536 conditions per place. [2023-11-29 01:01:35,351 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 45 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2023-11-29 01:01:35,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 309 flow [2023-11-29 01:01:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:01:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2023-11-29 01:01:35,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7489361702127659 [2023-11-29 01:01:35,354 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 176 transitions. [2023-11-29 01:01:35,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 176 transitions. [2023-11-29 01:01:35,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:35,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 176 transitions. [2023-11-29 01:01:35,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,357 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 96 flow. Second operand 5 states and 176 transitions. [2023-11-29 01:01:35,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 309 flow [2023-11-29 01:01:35,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:35,361 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 178 flow [2023-11-29 01:01:35,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-29 01:01:35,362 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-29 01:01:35,362 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 178 flow [2023-11-29 01:01:35,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:35,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:35,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:01:35,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:35,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1634945746, now seen corresponding path program 1 times [2023-11-29 01:01:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:35,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062407595] [2023-11-29 01:01:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:35,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062407595] [2023-11-29 01:01:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062407595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:35,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:35,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:35,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552257920] [2023-11-29 01:01:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:35,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:35,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:35,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:35,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:35,785 INFO L124 PetriNetUnfolderBase]: 546/884 cut-off events. [2023-11-29 01:01:35,785 INFO L125 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2023-11-29 01:01:35,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 884 events. 546/884 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3627 event pairs, 195 based on Foata normal form. 66/938 useless extension candidates. Maximal degree in co-relation 2582. Up to 373 conditions per place. [2023-11-29 01:01:35,793 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 50 selfloop transitions, 10 changer transitions 5/74 dead transitions. [2023-11-29 01:01:35,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 407 flow [2023-11-29 01:01:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:01:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2023-11-29 01:01:35,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.774468085106383 [2023-11-29 01:01:35,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 182 transitions. [2023-11-29 01:01:35,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 182 transitions. [2023-11-29 01:01:35,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:35,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 182 transitions. [2023-11-29 01:01:35,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,797 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,797 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 178 flow. Second operand 5 states and 182 transitions. [2023-11-29 01:01:35,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 407 flow [2023-11-29 01:01:35,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 395 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 01:01:35,804 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 221 flow [2023-11-29 01:01:35,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-29 01:01:35,805 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-29 01:01:35,805 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 221 flow [2023-11-29 01:01:35,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:35,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:35,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:01:35,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:35,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash 227331509, now seen corresponding path program 2 times [2023-11-29 01:01:35,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:35,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327877132] [2023-11-29 01:01:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:35,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:35,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:35,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327877132] [2023-11-29 01:01:35,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327877132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:35,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:35,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:01:35,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178322000] [2023-11-29 01:01:35,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:35,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:35,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:35,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:35,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:35,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:35,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:36,125 INFO L124 PetriNetUnfolderBase]: 623/1011 cut-off events. [2023-11-29 01:01:36,126 INFO L125 PetriNetUnfolderBase]: For 2030/2032 co-relation queries the response was YES. [2023-11-29 01:01:36,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3532 conditions, 1011 events. 623/1011 cut-off events. For 2030/2032 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4324 event pairs, 153 based on Foata normal form. 43/1045 useless extension candidates. Maximal degree in co-relation 3513. Up to 520 conditions per place. [2023-11-29 01:01:36,135 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 49 selfloop transitions, 9 changer transitions 12/79 dead transitions. [2023-11-29 01:01:36,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 536 flow [2023-11-29 01:01:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:01:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2023-11-29 01:01:36,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7925531914893617 [2023-11-29 01:01:36,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 149 transitions. [2023-11-29 01:01:36,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 149 transitions. [2023-11-29 01:01:36,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:36,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 149 transitions. [2023-11-29 01:01:36,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,139 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 221 flow. Second operand 4 states and 149 transitions. [2023-11-29 01:01:36,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 536 flow [2023-11-29 01:01:36,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 01:01:36,147 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 263 flow [2023-11-29 01:01:36,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-29 01:01:36,148 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-11-29 01:01:36,148 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 263 flow [2023-11-29 01:01:36,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:36,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:36,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:01:36,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:36,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1724221859, now seen corresponding path program 3 times [2023-11-29 01:01:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126599022] [2023-11-29 01:01:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:36,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126599022] [2023-11-29 01:01:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126599022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:36,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088836969] [2023-11-29 01:01:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:36,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:36,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:36,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:36,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:36,554 INFO L124 PetriNetUnfolderBase]: 706/1125 cut-off events. [2023-11-29 01:01:36,555 INFO L125 PetriNetUnfolderBase]: For 3798/3804 co-relation queries the response was YES. [2023-11-29 01:01:36,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 1125 events. 706/1125 cut-off events. For 3798/3804 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4773 event pairs, 241 based on Foata normal form. 16/1124 useless extension candidates. Maximal degree in co-relation 4222. Up to 711 conditions per place. [2023-11-29 01:01:36,566 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 46 selfloop transitions, 21 changer transitions 3/79 dead transitions. [2023-11-29 01:01:36,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 594 flow [2023-11-29 01:01:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:01:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2023-11-29 01:01:36,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-11-29 01:01:36,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 175 transitions. [2023-11-29 01:01:36,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 175 transitions. [2023-11-29 01:01:36,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:36,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 175 transitions. [2023-11-29 01:01:36,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,570 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 263 flow. Second operand 5 states and 175 transitions. [2023-11-29 01:01:36,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 594 flow [2023-11-29 01:01:36,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 581 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:36,577 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 439 flow [2023-11-29 01:01:36,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-29 01:01:36,578 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-29 01:01:36,578 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 439 flow [2023-11-29 01:01:36,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:36,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:36,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:01:36,579 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:36,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash 810954214, now seen corresponding path program 2 times [2023-11-29 01:01:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:36,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944928063] [2023-11-29 01:01:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:36,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:36,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944928063] [2023-11-29 01:01:36,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944928063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:36,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:36,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:01:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971663161] [2023-11-29 01:01:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:36,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:36,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:36,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:36,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:36,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:36,929 INFO L124 PetriNetUnfolderBase]: 774/1236 cut-off events. [2023-11-29 01:01:36,929 INFO L125 PetriNetUnfolderBase]: For 4764/4766 co-relation queries the response was YES. [2023-11-29 01:01:36,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 1236 events. 774/1236 cut-off events. For 4764/4766 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5394 event pairs, 161 based on Foata normal form. 36/1264 useless extension candidates. Maximal degree in co-relation 5490. Up to 765 conditions per place. [2023-11-29 01:01:36,945 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 60 selfloop transitions, 12 changer transitions 11/92 dead transitions. [2023-11-29 01:01:36,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 847 flow [2023-11-29 01:01:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:01:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2023-11-29 01:01:36,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7872340425531915 [2023-11-29 01:01:36,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 148 transitions. [2023-11-29 01:01:36,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 148 transitions. [2023-11-29 01:01:36,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:36,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 148 transitions. [2023-11-29 01:01:36,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,948 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 439 flow. Second operand 4 states and 148 transitions. [2023-11-29 01:01:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 847 flow [2023-11-29 01:01:36,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 807 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-29 01:01:36,965 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 513 flow [2023-11-29 01:01:36,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-11-29 01:01:36,966 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-29 01:01:36,966 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 513 flow [2023-11-29 01:01:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:36,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:36,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:36,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:01:36,967 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:36,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash -994937081, now seen corresponding path program 4 times [2023-11-29 01:01:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:36,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060650349] [2023-11-29 01:01:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:37,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:37,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060650349] [2023-11-29 01:01:37,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060650349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:37,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:37,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968293522] [2023-11-29 01:01:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:37,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:37,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 513 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:37,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:37,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:37,357 INFO L124 PetriNetUnfolderBase]: 782/1279 cut-off events. [2023-11-29 01:01:37,357 INFO L125 PetriNetUnfolderBase]: For 6562/6584 co-relation queries the response was YES. [2023-11-29 01:01:37,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 1279 events. 782/1279 cut-off events. For 6562/6584 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5819 event pairs, 250 based on Foata normal form. 38/1301 useless extension candidates. Maximal degree in co-relation 5586. Up to 620 conditions per place. [2023-11-29 01:01:37,368 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 57 selfloop transitions, 16 changer transitions 8/90 dead transitions. [2023-11-29 01:01:37,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 798 flow [2023-11-29 01:01:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:01:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2023-11-29 01:01:37,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7574468085106383 [2023-11-29 01:01:37,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2023-11-29 01:01:37,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2023-11-29 01:01:37,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:37,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2023-11-29 01:01:37,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,372 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 513 flow. Second operand 5 states and 178 transitions. [2023-11-29 01:01:37,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 798 flow [2023-11-29 01:01:37,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:37,386 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 561 flow [2023-11-29 01:01:37,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-29 01:01:37,387 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-29 01:01:37,387 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 561 flow [2023-11-29 01:01:37,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:37,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:01:37,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:37,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2022040664, now seen corresponding path program 3 times [2023-11-29 01:01:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757908211] [2023-11-29 01:01:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757908211] [2023-11-29 01:01:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757908211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:37,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:01:37,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990234128] [2023-11-29 01:01:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:37,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:37,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:37,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:37,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:37,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:37,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:37,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:37,681 INFO L124 PetriNetUnfolderBase]: 773/1214 cut-off events. [2023-11-29 01:01:37,681 INFO L125 PetriNetUnfolderBase]: For 8519/8525 co-relation queries the response was YES. [2023-11-29 01:01:37,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 1214 events. 773/1214 cut-off events. For 8519/8525 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5188 event pairs, 261 based on Foata normal form. 40/1237 useless extension candidates. Maximal degree in co-relation 6077. Up to 749 conditions per place. [2023-11-29 01:01:37,695 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 48 selfloop transitions, 24 changer transitions 9/90 dead transitions. [2023-11-29 01:01:37,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 956 flow [2023-11-29 01:01:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:01:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-29 01:01:37,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2023-11-29 01:01:37,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-29 01:01:37,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-29 01:01:37,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:37,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-29 01:01:37,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,699 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,699 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 561 flow. Second operand 4 states and 144 transitions. [2023-11-29 01:01:37,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 956 flow [2023-11-29 01:01:37,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 894 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-29 01:01:37,715 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 635 flow [2023-11-29 01:01:37,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=635, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-11-29 01:01:37,715 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-29 01:01:37,716 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 635 flow [2023-11-29 01:01:37,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:37,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:01:37,716 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:37,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 590030059, now seen corresponding path program 5 times [2023-11-29 01:01:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804508883] [2023-11-29 01:01:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:37,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:37,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804508883] [2023-11-29 01:01:37,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804508883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:37,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:37,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:01:37,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987991814] [2023-11-29 01:01:37,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:37,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:37,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:01:37,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:37,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 635 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:37,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:37,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:37,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:38,024 INFO L124 PetriNetUnfolderBase]: 722/1077 cut-off events. [2023-11-29 01:01:38,024 INFO L125 PetriNetUnfolderBase]: For 7304/7306 co-relation queries the response was YES. [2023-11-29 01:01:38,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1077 events. 722/1077 cut-off events. For 7304/7306 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4101 event pairs, 204 based on Foata normal form. 23/1094 useless extension candidates. Maximal degree in co-relation 5785. Up to 649 conditions per place. [2023-11-29 01:01:38,054 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 53 selfloop transitions, 30 changer transitions 1/93 dead transitions. [2023-11-29 01:01:38,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 93 transitions, 1052 flow [2023-11-29 01:01:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:01:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-29 01:01:38,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2023-11-29 01:01:38,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-29 01:01:38,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-29 01:01:38,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:38,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-29 01:01:38,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,059 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 635 flow. Second operand 4 states and 144 transitions. [2023-11-29 01:01:38,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 93 transitions, 1052 flow [2023-11-29 01:01:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 962 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-29 01:01:38,070 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 799 flow [2023-11-29 01:01:38,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-11-29 01:01:38,071 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-11-29 01:01:38,071 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 799 flow [2023-11-29 01:01:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:38,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:01:38,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:38,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2095211059, now seen corresponding path program 1 times [2023-11-29 01:01:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334499089] [2023-11-29 01:01:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:38,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334499089] [2023-11-29 01:01:38,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334499089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:38,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117537307] [2023-11-29 01:01:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:38,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:38,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:38,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:38,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:01:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:01:38,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:38,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117537307] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:38,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:01:38,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-11-29 01:01:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841709477] [2023-11-29 01:01:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:38,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:01:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:01:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:01:38,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:38,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 799 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:38,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:38,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:38,709 INFO L124 PetriNetUnfolderBase]: 826/1236 cut-off events. [2023-11-29 01:01:38,710 INFO L125 PetriNetUnfolderBase]: For 8802/8802 co-relation queries the response was YES. [2023-11-29 01:01:38,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 1236 events. 826/1236 cut-off events. For 8802/8802 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4862 event pairs, 97 based on Foata normal form. 47/1281 useless extension candidates. Maximal degree in co-relation 6833. Up to 936 conditions per place. [2023-11-29 01:01:38,734 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 78 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2023-11-29 01:01:38,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 1217 flow [2023-11-29 01:01:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:01:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:01:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2023-11-29 01:01:38,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606382978723404 [2023-11-29 01:01:38,735 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 143 transitions. [2023-11-29 01:01:38,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 143 transitions. [2023-11-29 01:01:38,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:38,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 143 transitions. [2023-11-29 01:01:38,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,736 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,736 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 799 flow. Second operand 4 states and 143 transitions. [2023-11-29 01:01:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 1217 flow [2023-11-29 01:01:38,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 1148 flow, removed 23 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:38,758 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 838 flow [2023-11-29 01:01:38,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=838, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2023-11-29 01:01:38,759 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-11-29 01:01:38,759 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 838 flow [2023-11-29 01:01:38,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:38,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:38,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:38,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:01:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:01:38,961 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash 214442799, now seen corresponding path program 2 times [2023-11-29 01:01:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693246478] [2023-11-29 01:01:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693246478] [2023-11-29 01:01:39,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693246478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:39,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269023073] [2023-11-29 01:01:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:39,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:39,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:39,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:39,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:39,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:39,268 INFO L124 PetriNetUnfolderBase]: 880/1331 cut-off events. [2023-11-29 01:01:39,268 INFO L125 PetriNetUnfolderBase]: For 10100/10100 co-relation queries the response was YES. [2023-11-29 01:01:39,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7514 conditions, 1331 events. 880/1331 cut-off events. For 10100/10100 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5433 event pairs, 226 based on Foata normal form. 16/1344 useless extension candidates. Maximal degree in co-relation 7484. Up to 793 conditions per place. [2023-11-29 01:01:39,280 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 68 selfloop transitions, 32 changer transitions 4/113 dead transitions. [2023-11-29 01:01:39,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 1413 flow [2023-11-29 01:01:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:01:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2023-11-29 01:01:39,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7191489361702128 [2023-11-29 01:01:39,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 169 transitions. [2023-11-29 01:01:39,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 169 transitions. [2023-11-29 01:01:39,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:39,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 169 transitions. [2023-11-29 01:01:39,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,284 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,284 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 838 flow. Second operand 5 states and 169 transitions. [2023-11-29 01:01:39,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 1413 flow [2023-11-29 01:01:39,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 1384 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:39,296 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 1119 flow [2023-11-29 01:01:39,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1119, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2023-11-29 01:01:39,297 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-29 01:01:39,297 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 1119 flow [2023-11-29 01:01:39,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:39,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:39,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:01:39,297 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:39,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash 244903383, now seen corresponding path program 3 times [2023-11-29 01:01:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385046284] [2023-11-29 01:01:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:39,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385046284] [2023-11-29 01:01:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385046284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307546827] [2023-11-29 01:01:39,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:01:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:39,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:39,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:39,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:01:39,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:01:39,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:39,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:01:39,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:39,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307546827] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:39,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-29 01:01:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588865962] [2023-11-29 01:01:39,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:01:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:01:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:01:39,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:39,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 1119 flow. Second operand has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:39,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:39,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:39,919 INFO L124 PetriNetUnfolderBase]: 1097/1674 cut-off events. [2023-11-29 01:01:39,919 INFO L125 PetriNetUnfolderBase]: For 14716/14716 co-relation queries the response was YES. [2023-11-29 01:01:39,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10376 conditions, 1674 events. 1097/1674 cut-off events. For 14716/14716 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7249 event pairs, 258 based on Foata normal form. 47/1717 useless extension candidates. Maximal degree in co-relation 10343. Up to 1099 conditions per place. [2023-11-29 01:01:39,937 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 89 selfloop transitions, 57 changer transitions 0/155 dead transitions. [2023-11-29 01:01:39,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 2196 flow [2023-11-29 01:01:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:01:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:01:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-29 01:01:39,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7269503546099291 [2023-11-29 01:01:39,940 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-29 01:01:39,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-29 01:01:39,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:39,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-29 01:01:39,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,942 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,942 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 1119 flow. Second operand 6 states and 205 transitions. [2023-11-29 01:01:39,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 2196 flow [2023-11-29 01:01:39,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 155 transitions, 2126 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-29 01:01:39,964 INFO L231 Difference]: Finished difference. Result has 82 places, 128 transitions, 1869 flow [2023-11-29 01:01:39,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1869, PETRI_PLACES=82, PETRI_TRANSITIONS=128} [2023-11-29 01:01:39,964 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-11-29 01:01:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 128 transitions, 1869 flow [2023-11-29 01:01:39,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:39,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:39,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:39,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:01:40,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:01:40,167 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:40,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 821705107, now seen corresponding path program 4 times [2023-11-29 01:01:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214562797] [2023-11-29 01:01:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214562797] [2023-11-29 01:01:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214562797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:40,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:40,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:01:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107893635] [2023-11-29 01:01:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:01:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:01:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:01:40,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:40,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 128 transitions, 1869 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:40,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:40,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:40,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:40,633 INFO L124 PetriNetUnfolderBase]: 1084/1628 cut-off events. [2023-11-29 01:01:40,633 INFO L125 PetriNetUnfolderBase]: For 17234/17236 co-relation queries the response was YES. [2023-11-29 01:01:40,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 1628 events. 1084/1628 cut-off events. For 17234/17236 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6810 event pairs, 288 based on Foata normal form. 23/1647 useless extension candidates. Maximal degree in co-relation 11087. Up to 1064 conditions per place. [2023-11-29 01:01:40,656 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 107 selfloop transitions, 25 changer transitions 9/150 dead transitions. [2023-11-29 01:01:40,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 2388 flow [2023-11-29 01:01:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:01:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:01:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2023-11-29 01:01:40,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2023-11-29 01:01:40,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 165 transitions. [2023-11-29 01:01:40,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 165 transitions. [2023-11-29 01:01:40,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:40,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 165 transitions. [2023-11-29 01:01:40,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:40,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:40,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:40,660 INFO L175 Difference]: Start difference. First operand has 82 places, 128 transitions, 1869 flow. Second operand 5 states and 165 transitions. [2023-11-29 01:01:40,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 2388 flow [2023-11-29 01:01:40,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 2326 flow, removed 31 selfloop flow, removed 0 redundant places. [2023-11-29 01:01:40,703 INFO L231 Difference]: Finished difference. Result has 88 places, 126 transitions, 1867 flow [2023-11-29 01:01:40,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1867, PETRI_PLACES=88, PETRI_TRANSITIONS=126} [2023-11-29 01:01:40,703 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-11-29 01:01:40,704 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 126 transitions, 1867 flow [2023-11-29 01:01:40,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:40,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:40,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:40,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:01:40,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:40,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2024019300, now seen corresponding path program 1 times [2023-11-29 01:01:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:40,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452360761] [2023-11-29 01:01:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:40,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452360761] [2023-11-29 01:01:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452360761] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921345509] [2023-11-29 01:01:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:40,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:40,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:40,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:40,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:01:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:41,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:01:41,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:41,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921345509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:42,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-11-29 01:01:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145686671] [2023-11-29 01:01:42,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:01:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:01:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:01:42,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:42,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 126 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:42,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:42,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:42,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:42,542 INFO L124 PetriNetUnfolderBase]: 1524/2303 cut-off events. [2023-11-29 01:01:42,542 INFO L125 PetriNetUnfolderBase]: For 22342/22356 co-relation queries the response was YES. [2023-11-29 01:01:42,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14865 conditions, 2303 events. 1524/2303 cut-off events. For 22342/22356 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10274 event pairs, 183 based on Foata normal form. 8/2309 useless extension candidates. Maximal degree in co-relation 14826. Up to 1616 conditions per place. [2023-11-29 01:01:42,563 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 143 selfloop transitions, 55 changer transitions 2/209 dead transitions. [2023-11-29 01:01:42,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 209 transitions, 2955 flow [2023-11-29 01:01:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:01:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:01:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 323 transitions. [2023-11-29 01:01:42,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7635933806146572 [2023-11-29 01:01:42,565 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 323 transitions. [2023-11-29 01:01:42,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 323 transitions. [2023-11-29 01:01:42,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:42,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 323 transitions. [2023-11-29 01:01:42,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:42,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:42,568 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:42,568 INFO L175 Difference]: Start difference. First operand has 88 places, 126 transitions, 1867 flow. Second operand 9 states and 323 transitions. [2023-11-29 01:01:42,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 209 transitions, 2955 flow [2023-11-29 01:01:42,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 209 transitions, 2861 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-29 01:01:42,600 INFO L231 Difference]: Finished difference. Result has 94 places, 157 transitions, 2446 flow [2023-11-29 01:01:42,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2446, PETRI_PLACES=94, PETRI_TRANSITIONS=157} [2023-11-29 01:01:42,600 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-11-29 01:01:42,601 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 157 transitions, 2446 flow [2023-11-29 01:01:42,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:42,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:42,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:42,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:01:42,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:42,802 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:42,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2904790, now seen corresponding path program 2 times [2023-11-29 01:01:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:42,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710116732] [2023-11-29 01:01:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:43,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710116732] [2023-11-29 01:01:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710116732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237838134] [2023-11-29 01:01:43,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:01:43,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:43,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:43,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:43,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:01:43,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:01:43,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:43,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:01:43,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:43,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237838134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:44,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:44,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-11-29 01:01:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490476762] [2023-11-29 01:01:44,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:44,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:01:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:01:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:01:44,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:44,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 157 transitions, 2446 flow. Second operand has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:44,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:44,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:44,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:44,752 INFO L124 PetriNetUnfolderBase]: 1770/2710 cut-off events. [2023-11-29 01:01:44,752 INFO L125 PetriNetUnfolderBase]: For 27547/27563 co-relation queries the response was YES. [2023-11-29 01:01:44,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17669 conditions, 2710 events. 1770/2710 cut-off events. For 27547/27563 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12657 event pairs, 302 based on Foata normal form. 7/2715 useless extension candidates. Maximal degree in co-relation 17627. Up to 2057 conditions per place. [2023-11-29 01:01:44,786 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 153 selfloop transitions, 52 changer transitions 1/215 dead transitions. [2023-11-29 01:01:44,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 215 transitions, 3301 flow [2023-11-29 01:01:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:01:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:01:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2023-11-29 01:01:44,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7553191489361702 [2023-11-29 01:01:44,788 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2023-11-29 01:01:44,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2023-11-29 01:01:44,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:44,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2023-11-29 01:01:44,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:44,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:44,791 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:44,791 INFO L175 Difference]: Start difference. First operand has 94 places, 157 transitions, 2446 flow. Second operand 8 states and 284 transitions. [2023-11-29 01:01:44,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 215 transitions, 3301 flow [2023-11-29 01:01:44,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 215 transitions, 3061 flow, removed 108 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:44,848 INFO L231 Difference]: Finished difference. Result has 102 places, 173 transitions, 2609 flow [2023-11-29 01:01:44,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2609, PETRI_PLACES=102, PETRI_TRANSITIONS=173} [2023-11-29 01:01:44,849 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2023-11-29 01:01:44,849 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 173 transitions, 2609 flow [2023-11-29 01:01:44,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:44,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:44,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:44,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:01:45,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:45,055 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:45,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1042812950, now seen corresponding path program 3 times [2023-11-29 01:01:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:45,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937497642] [2023-11-29 01:01:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937497642] [2023-11-29 01:01:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937497642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26650882] [2023-11-29 01:01:45,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:01:45,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:45,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:45,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:45,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:01:45,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:01:45,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:45,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:01:45,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:45,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26650882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:46,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:46,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-11-29 01:01:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916336350] [2023-11-29 01:01:46,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:46,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:01:46,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:01:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:01:46,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:46,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 173 transitions, 2609 flow. Second operand has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:46,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:46,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:46,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:46,743 INFO L124 PetriNetUnfolderBase]: 2220/3422 cut-off events. [2023-11-29 01:01:46,743 INFO L125 PetriNetUnfolderBase]: For 34139/34160 co-relation queries the response was YES. [2023-11-29 01:01:46,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21699 conditions, 3422 events. 2220/3422 cut-off events. For 34139/34160 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16793 event pairs, 430 based on Foata normal form. 3/3418 useless extension candidates. Maximal degree in co-relation 21654. Up to 2638 conditions per place. [2023-11-29 01:01:46,771 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 190 selfloop transitions, 64 changer transitions 2/265 dead transitions. [2023-11-29 01:01:46,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 265 transitions, 4096 flow [2023-11-29 01:01:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:01:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:01:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 320 transitions. [2023-11-29 01:01:46,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7565011820330969 [2023-11-29 01:01:46,774 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 320 transitions. [2023-11-29 01:01:46,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 320 transitions. [2023-11-29 01:01:46,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:46,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 320 transitions. [2023-11-29 01:01:46,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:46,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:46,776 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:46,776 INFO L175 Difference]: Start difference. First operand has 102 places, 173 transitions, 2609 flow. Second operand 9 states and 320 transitions. [2023-11-29 01:01:46,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 265 transitions, 4096 flow [2023-11-29 01:01:46,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 265 transitions, 3923 flow, removed 76 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:46,896 INFO L231 Difference]: Finished difference. Result has 113 places, 213 transitions, 3381 flow [2023-11-29 01:01:46,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3381, PETRI_PLACES=113, PETRI_TRANSITIONS=213} [2023-11-29 01:01:46,897 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 63 predicate places. [2023-11-29 01:01:46,897 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 213 transitions, 3381 flow [2023-11-29 01:01:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:46,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:46,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:46,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:01:47,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:47,100 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:47,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1581304648, now seen corresponding path program 4 times [2023-11-29 01:01:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38702475] [2023-11-29 01:01:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:47,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:47,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:47,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38702475] [2023-11-29 01:01:47,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38702475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:47,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805246558] [2023-11-29 01:01:47,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:01:47,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:47,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:01:47,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:01:47,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:47,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:01:47,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:47,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:48,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805246558] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:48,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:48,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-11-29 01:01:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077969130] [2023-11-29 01:01:48,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:48,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:01:48,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:01:48,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:01:48,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:48,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 213 transitions, 3381 flow. Second operand has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:48,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:48,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:48,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:48,828 INFO L124 PetriNetUnfolderBase]: 2500/3856 cut-off events. [2023-11-29 01:01:48,828 INFO L125 PetriNetUnfolderBase]: For 40402/40426 co-relation queries the response was YES. [2023-11-29 01:01:48,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24721 conditions, 3856 events. 2500/3856 cut-off events. For 40402/40426 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19375 event pairs, 543 based on Foata normal form. 3/3849 useless extension candidates. Maximal degree in co-relation 24670. Up to 3096 conditions per place. [2023-11-29 01:01:48,872 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 205 selfloop transitions, 64 changer transitions 2/280 dead transitions. [2023-11-29 01:01:48,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 4571 flow [2023-11-29 01:01:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:01:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:01:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2023-11-29 01:01:48,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7470449172576832 [2023-11-29 01:01:48,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2023-11-29 01:01:48,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2023-11-29 01:01:48,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:48,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2023-11-29 01:01:48,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:48,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:48,878 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:48,878 INFO L175 Difference]: Start difference. First operand has 113 places, 213 transitions, 3381 flow. Second operand 9 states and 316 transitions. [2023-11-29 01:01:48,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 4571 flow [2023-11-29 01:01:48,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 280 transitions, 4231 flow, removed 158 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:48,944 INFO L231 Difference]: Finished difference. Result has 123 places, 232 transitions, 3589 flow [2023-11-29 01:01:48,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3589, PETRI_PLACES=123, PETRI_TRANSITIONS=232} [2023-11-29 01:01:48,945 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 73 predicate places. [2023-11-29 01:01:48,945 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 232 transitions, 3589 flow [2023-11-29 01:01:48,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:48,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:48,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:48,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:01:49,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:49,146 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:49,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 960437266, now seen corresponding path program 5 times [2023-11-29 01:01:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:49,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781371909] [2023-11-29 01:01:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:49,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781371909] [2023-11-29 01:01:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781371909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376561299] [2023-11-29 01:01:49,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:01:49,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:49,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:49,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:01:49,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:01:49,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:49,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:01:49,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:49,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:50,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376561299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:50,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:50,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-11-29 01:01:50,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027600958] [2023-11-29 01:01:50,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:50,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:01:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:50,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:01:50,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:01:50,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:50,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 232 transitions, 3589 flow. Second operand has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:50,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:50,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:50,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:51,650 INFO L124 PetriNetUnfolderBase]: 2906/4478 cut-off events. [2023-11-29 01:01:51,650 INFO L125 PetriNetUnfolderBase]: For 46242/46277 co-relation queries the response was YES. [2023-11-29 01:01:51,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28326 conditions, 4478 events. 2906/4478 cut-off events. For 46242/46277 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23231 event pairs, 674 based on Foata normal form. 6/4474 useless extension candidates. Maximal degree in co-relation 28271. Up to 3687 conditions per place. [2023-11-29 01:01:51,686 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 243 selfloop transitions, 63 changer transitions 2/317 dead transitions. [2023-11-29 01:01:51,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 317 transitions, 5196 flow [2023-11-29 01:01:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:01:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:01:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 315 transitions. [2023-11-29 01:01:51,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-11-29 01:01:51,688 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 315 transitions. [2023-11-29 01:01:51,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 315 transitions. [2023-11-29 01:01:51,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:51,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 315 transitions. [2023-11-29 01:01:51,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:51,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:51,691 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:51,691 INFO L175 Difference]: Start difference. First operand has 123 places, 232 transitions, 3589 flow. Second operand 9 states and 315 transitions. [2023-11-29 01:01:51,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 317 transitions, 5196 flow [2023-11-29 01:01:51,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 317 transitions, 4909 flow, removed 117 selfloop flow, removed 2 redundant places. [2023-11-29 01:01:51,775 INFO L231 Difference]: Finished difference. Result has 133 places, 271 transitions, 4266 flow [2023-11-29 01:01:51,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4266, PETRI_PLACES=133, PETRI_TRANSITIONS=271} [2023-11-29 01:01:51,775 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2023-11-29 01:01:51,776 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 271 transitions, 4266 flow [2023-11-29 01:01:51,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:51,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:51,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:51,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:01:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:01:51,977 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:51,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash 97779404, now seen corresponding path program 6 times [2023-11-29 01:01:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268551057] [2023-11-29 01:01:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:51,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268551057] [2023-11-29 01:01:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268551057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680553157] [2023-11-29 01:01:52,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:01:52,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:52,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:52,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:52,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:01:52,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 01:01:52,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:52,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:01:52,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:52,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:53,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680553157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:53,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2023-11-29 01:01:53,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415012379] [2023-11-29 01:01:53,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:53,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:01:53,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:53,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:01:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:01:53,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:53,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 271 transitions, 4266 flow. Second operand has 12 states, 12 states have (on average 29.916666666666668) internal successors, (359), 12 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:53,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:53,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:54,648 INFO L124 PetriNetUnfolderBase]: 3186/4920 cut-off events. [2023-11-29 01:01:54,648 INFO L125 PetriNetUnfolderBase]: For 51618/51656 co-relation queries the response was YES. [2023-11-29 01:01:54,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31306 conditions, 4920 events. 3186/4920 cut-off events. For 51618/51656 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26046 event pairs, 799 based on Foata normal form. 2/4912 useless extension candidates. Maximal degree in co-relation 31246. Up to 4113 conditions per place. [2023-11-29 01:01:54,703 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 261 selfloop transitions, 63 changer transitions 2/335 dead transitions. [2023-11-29 01:01:54,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 335 transitions, 5632 flow [2023-11-29 01:01:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:01:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:01:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2023-11-29 01:01:54,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7423167848699763 [2023-11-29 01:01:54,706 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 314 transitions. [2023-11-29 01:01:54,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 314 transitions. [2023-11-29 01:01:54,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:54,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 314 transitions. [2023-11-29 01:01:54,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.888888888888886) internal successors, (314), 9 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:54,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:54,709 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:54,709 INFO L175 Difference]: Start difference. First operand has 133 places, 271 transitions, 4266 flow. Second operand 9 states and 314 transitions. [2023-11-29 01:01:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 335 transitions, 5632 flow [2023-11-29 01:01:54,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 335 transitions, 5242 flow, removed 183 selfloop flow, removed 1 redundant places. [2023-11-29 01:01:54,842 INFO L231 Difference]: Finished difference. Result has 143 places, 290 transitions, 4494 flow [2023-11-29 01:01:54,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4494, PETRI_PLACES=143, PETRI_TRANSITIONS=290} [2023-11-29 01:01:54,843 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 93 predicate places. [2023-11-29 01:01:54,843 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 290 transitions, 4494 flow [2023-11-29 01:01:54,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.916666666666668) internal successors, (359), 12 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:54,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:54,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:54,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:01:55,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:01:55,044 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:55,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:55,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2077280205, now seen corresponding path program 7 times [2023-11-29 01:01:55,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:55,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710520565] [2023-11-29 01:01:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:55,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710520565] [2023-11-29 01:01:55,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710520565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577122630] [2023-11-29 01:01:55,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:01:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:55,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:55,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:55,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:01:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:55,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:01:55,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:55,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577122630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:55,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:55,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-11-29 01:01:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826045584] [2023-11-29 01:01:55,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:01:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:01:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:01:55,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:55,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 290 transitions, 4494 flow. Second operand has 12 states, 12 states have (on average 28.416666666666668) internal successors, (341), 12 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:55,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:55,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:55,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:57,076 INFO L124 PetriNetUnfolderBase]: 4816/7323 cut-off events. [2023-11-29 01:01:57,076 INFO L125 PetriNetUnfolderBase]: For 78495/78503 co-relation queries the response was YES. [2023-11-29 01:01:57,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45094 conditions, 7323 events. 4816/7323 cut-off events. For 78495/78503 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39821 event pairs, 513 based on Foata normal form. 48/7355 useless extension candidates. Maximal degree in co-relation 45030. Up to 2368 conditions per place. [2023-11-29 01:01:57,141 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 500 selfloop transitions, 139 changer transitions 0/648 dead transitions. [2023-11-29 01:01:57,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 648 transitions, 10692 flow [2023-11-29 01:01:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:01:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:01:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 464 transitions. [2023-11-29 01:01:57,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7594108019639935 [2023-11-29 01:01:57,144 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 464 transitions. [2023-11-29 01:01:57,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 464 transitions. [2023-11-29 01:01:57,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:57,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 464 transitions. [2023-11-29 01:01:57,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 35.69230769230769) internal successors, (464), 13 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:57,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:57,147 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:57,147 INFO L175 Difference]: Start difference. First operand has 143 places, 290 transitions, 4494 flow. Second operand 13 states and 464 transitions. [2023-11-29 01:01:57,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 648 transitions, 10692 flow [2023-11-29 01:01:57,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 648 transitions, 9794 flow, removed 423 selfloop flow, removed 2 redundant places. [2023-11-29 01:01:57,298 INFO L231 Difference]: Finished difference. Result has 161 places, 354 transitions, 5536 flow [2023-11-29 01:01:57,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4138, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5536, PETRI_PLACES=161, PETRI_TRANSITIONS=354} [2023-11-29 01:01:57,299 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 111 predicate places. [2023-11-29 01:01:57,299 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 354 transitions, 5536 flow [2023-11-29 01:01:57,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.416666666666668) internal successors, (341), 12 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:57,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:57,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:57,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:01:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:01:57,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:01:57,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1212977260, now seen corresponding path program 8 times [2023-11-29 01:01:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102333203] [2023-11-29 01:01:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:57,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102333203] [2023-11-29 01:01:57,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102333203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:01:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545469056] [2023-11-29 01:01:57,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:01:57,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:57,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:57,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:01:57,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:01:57,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:01:57,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:01:57,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:01:57,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:01:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:57,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:01:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:01:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545469056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:01:57,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:01:57,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 01:01:57,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490643836] [2023-11-29 01:01:57,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:01:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:01:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:01:57,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:01:57,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:01:57,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 354 transitions, 5536 flow. Second operand has 16 states, 16 states have (on average 27.0625) internal successors, (433), 16 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:57,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:57,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:01:57,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:59,769 INFO L124 PetriNetUnfolderBase]: 5579/8186 cut-off events. [2023-11-29 01:01:59,769 INFO L125 PetriNetUnfolderBase]: For 106846/106906 co-relation queries the response was YES. [2023-11-29 01:01:59,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56394 conditions, 8186 events. 5579/8186 cut-off events. For 106846/106906 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 42788 event pairs, 1307 based on Foata normal form. 70/8212 useless extension candidates. Maximal degree in co-relation 56322. Up to 5459 conditions per place. [2023-11-29 01:01:59,865 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 402 selfloop transitions, 260 changer transitions 0/671 dead transitions. [2023-11-29 01:01:59,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 671 transitions, 11155 flow [2023-11-29 01:01:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:01:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 01:01:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 588 transitions. [2023-11-29 01:01:59,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7359198998748435 [2023-11-29 01:01:59,868 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 588 transitions. [2023-11-29 01:01:59,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 588 transitions. [2023-11-29 01:01:59,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:59,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 588 transitions. [2023-11-29 01:01:59,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 34.588235294117645) internal successors, (588), 17 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:59,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:59,874 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:59,874 INFO L175 Difference]: Start difference. First operand has 161 places, 354 transitions, 5536 flow. Second operand 17 states and 588 transitions. [2023-11-29 01:01:59,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 671 transitions, 11155 flow [2023-11-29 01:02:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 671 transitions, 10617 flow, removed 239 selfloop flow, removed 1 redundant places. [2023-11-29 01:02:00,210 INFO L231 Difference]: Finished difference. Result has 181 places, 488 transitions, 7942 flow [2023-11-29 01:02:00,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5196, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7942, PETRI_PLACES=181, PETRI_TRANSITIONS=488} [2023-11-29 01:02:00,210 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2023-11-29 01:02:00,211 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 488 transitions, 7942 flow [2023-11-29 01:02:00,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.0625) internal successors, (433), 16 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:00,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:00,211 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:00,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:02:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:02:00,412 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:02:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1513972735, now seen corresponding path program 9 times [2023-11-29 01:02:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560345941] [2023-11-29 01:02:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:00,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560345941] [2023-11-29 01:02:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560345941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494678116] [2023-11-29 01:02:00,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:02:00,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:00,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:00,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:00,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:02:00,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:02:00,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:02:00,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:02:00,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:00,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494678116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:00,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-11-29 01:02:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240634425] [2023-11-29 01:02:00,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:02:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:02:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:02:00,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:02:00,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 488 transitions, 7942 flow. Second operand has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 15 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:00,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:00,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:02:00,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:04,708 INFO L124 PetriNetUnfolderBase]: 6962/10417 cut-off events. [2023-11-29 01:02:04,708 INFO L125 PetriNetUnfolderBase]: For 153976/154032 co-relation queries the response was YES. [2023-11-29 01:02:04,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73745 conditions, 10417 events. 6962/10417 cut-off events. For 153976/154032 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 59455 event pairs, 940 based on Foata normal form. 309/10700 useless extension candidates. Maximal degree in co-relation 73667. Up to 3556 conditions per place. [2023-11-29 01:02:04,855 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 477 selfloop transitions, 521 changer transitions 65/1072 dead transitions. [2023-11-29 01:02:04,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1072 transitions, 18087 flow [2023-11-29 01:02:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:02:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-29 01:02:04,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1427 transitions. [2023-11-29 01:02:04,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6900386847195358 [2023-11-29 01:02:04,859 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 1427 transitions. [2023-11-29 01:02:04,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 1427 transitions. [2023-11-29 01:02:04,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:04,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 1427 transitions. [2023-11-29 01:02:04,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 32.43181818181818) internal successors, (1427), 44 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:04,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 47.0) internal successors, (2115), 45 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:04,867 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 47.0) internal successors, (2115), 45 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:04,867 INFO L175 Difference]: Start difference. First operand has 181 places, 488 transitions, 7942 flow. Second operand 44 states and 1427 transitions. [2023-11-29 01:02:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1072 transitions, 18087 flow [2023-11-29 01:02:05,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1072 transitions, 16860 flow, removed 350 selfloop flow, removed 5 redundant places. [2023-11-29 01:02:05,792 INFO L231 Difference]: Finished difference. Result has 248 places, 790 transitions, 13560 flow [2023-11-29 01:02:05,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7142, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=13560, PETRI_PLACES=248, PETRI_TRANSITIONS=790} [2023-11-29 01:02:05,792 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 198 predicate places. [2023-11-29 01:02:05,793 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 790 transitions, 13560 flow [2023-11-29 01:02:05,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 15 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:05,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:05,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:05,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:02:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:02:05,993 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:02:05,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash -291633888, now seen corresponding path program 10 times [2023-11-29 01:02:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770596534] [2023-11-29 01:02:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:06,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:06,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770596534] [2023-11-29 01:02:06,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770596534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:06,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419820021] [2023-11-29 01:02:06,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:02:06,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:06,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:06,125 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:06,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:02:06,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:02:06,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:02:06,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:02:06,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:06,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:06,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419820021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:06,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 01:02:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505864280] [2023-11-29 01:02:06,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:02:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:02:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:02:06,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:02:06,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 790 transitions, 13560 flow. Second operand has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:06,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:06,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:02:06,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:09,817 INFO L124 PetriNetUnfolderBase]: 7034/10688 cut-off events. [2023-11-29 01:02:09,818 INFO L125 PetriNetUnfolderBase]: For 231162/231223 co-relation queries the response was YES. [2023-11-29 01:02:09,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86220 conditions, 10688 events. 7034/10688 cut-off events. For 231162/231223 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 63304 event pairs, 1408 based on Foata normal form. 216/10866 useless extension candidates. Maximal degree in co-relation 86112. Up to 5180 conditions per place. [2023-11-29 01:02:10,173 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 625 selfloop transitions, 234 changer transitions 52/920 dead transitions. [2023-11-29 01:02:10,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 920 transitions, 17363 flow [2023-11-29 01:02:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:02:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:02:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2023-11-29 01:02:10,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606382978723404 [2023-11-29 01:02:10,190 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 286 transitions. [2023-11-29 01:02:10,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 286 transitions. [2023-11-29 01:02:10,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:10,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 286 transitions. [2023-11-29 01:02:10,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:10,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:10,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:10,192 INFO L175 Difference]: Start difference. First operand has 248 places, 790 transitions, 13560 flow. Second operand 8 states and 286 transitions. [2023-11-29 01:02:10,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 920 transitions, 17363 flow [2023-11-29 01:02:12,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 920 transitions, 15474 flow, removed 738 selfloop flow, removed 9 redundant places. [2023-11-29 01:02:12,232 INFO L231 Difference]: Finished difference. Result has 245 places, 789 transitions, 12639 flow [2023-11-29 01:02:12,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11973, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12639, PETRI_PLACES=245, PETRI_TRANSITIONS=789} [2023-11-29 01:02:12,233 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 195 predicate places. [2023-11-29 01:02:12,233 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 789 transitions, 12639 flow [2023-11-29 01:02:12,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:12,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:12,234 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:12,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:02:12,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:02:12,434 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:02:12,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1413895851, now seen corresponding path program 11 times [2023-11-29 01:02:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:12,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46222027] [2023-11-29 01:02:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:12,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46222027] [2023-11-29 01:02:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46222027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607010755] [2023-11-29 01:02:12,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:02:12,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:12,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:12,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:12,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:02:12,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 01:02:12,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:02:12,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:02:12,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:12,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607010755] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:12,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 01:02:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032561752] [2023-11-29 01:02:12,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:12,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:02:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:02:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:02:12,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:02:12,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 789 transitions, 12639 flow. Second operand has 16 states, 16 states have (on average 27.5) internal successors, (440), 16 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:12,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:12,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:02:12,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:16,719 INFO L124 PetriNetUnfolderBase]: 8209/12171 cut-off events. [2023-11-29 01:02:16,720 INFO L125 PetriNetUnfolderBase]: For 286725/286823 co-relation queries the response was YES. [2023-11-29 01:02:16,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101412 conditions, 12171 events. 8209/12171 cut-off events. For 286725/286823 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 70048 event pairs, 1514 based on Foata normal form. 134/12264 useless extension candidates. Maximal degree in co-relation 101308. Up to 7914 conditions per place. [2023-11-29 01:02:16,880 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 744 selfloop transitions, 532 changer transitions 36/1321 dead transitions. [2023-11-29 01:02:16,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1321 transitions, 24744 flow [2023-11-29 01:02:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:02:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 01:02:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 566 transitions. [2023-11-29 01:02:16,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083854818523154 [2023-11-29 01:02:16,882 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 566 transitions. [2023-11-29 01:02:16,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 566 transitions. [2023-11-29 01:02:16,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:16,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 566 transitions. [2023-11-29 01:02:16,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 33.294117647058826) internal successors, (566), 17 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,884 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,884 INFO L175 Difference]: Start difference. First operand has 245 places, 789 transitions, 12639 flow. Second operand 17 states and 566 transitions. [2023-11-29 01:02:16,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1321 transitions, 24744 flow [2023-11-29 01:02:18,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1321 transitions, 24095 flow, removed 50 selfloop flow, removed 3 redundant places. [2023-11-29 01:02:18,686 INFO L231 Difference]: Finished difference. Result has 263 places, 1037 transitions, 18624 flow [2023-11-29 01:02:18,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12195, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18624, PETRI_PLACES=263, PETRI_TRANSITIONS=1037} [2023-11-29 01:02:18,687 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 213 predicate places. [2023-11-29 01:02:18,687 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 1037 transitions, 18624 flow [2023-11-29 01:02:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.5) internal successors, (440), 16 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:18,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:18,687 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:18,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:02:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:18,888 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:02:18,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1835519761, now seen corresponding path program 12 times [2023-11-29 01:02:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102520527] [2023-11-29 01:02:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:19,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102520527] [2023-11-29 01:02:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102520527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114506347] [2023-11-29 01:02:19,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:02:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:19,061 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:19,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:02:19,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 01:02:19,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:02:19,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:02:19,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:19,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114506347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:19,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-11-29 01:02:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412166908] [2023-11-29 01:02:19,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:19,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:02:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:02:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:02:19,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:02:19,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1037 transitions, 18624 flow. Second operand has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:19,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:19,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:02:19,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:23,786 INFO L124 PetriNetUnfolderBase]: 8570/12776 cut-off events. [2023-11-29 01:02:23,786 INFO L125 PetriNetUnfolderBase]: For 329450/329489 co-relation queries the response was YES. [2023-11-29 01:02:23,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113479 conditions, 12776 events. 8570/12776 cut-off events. For 329450/329489 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 74642 event pairs, 566 based on Foata normal form. 104/12862 useless extension candidates. Maximal degree in co-relation 113368. Up to 4228 conditions per place. [2023-11-29 01:02:23,958 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 856 selfloop transitions, 492 changer transitions 35/1392 dead transitions. [2023-11-29 01:02:23,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 1392 transitions, 28063 flow [2023-11-29 01:02:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:02:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:02:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 454 transitions. [2023-11-29 01:02:23,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7430441898527005 [2023-11-29 01:02:23,960 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 454 transitions. [2023-11-29 01:02:23,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 454 transitions. [2023-11-29 01:02:23,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:23,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 454 transitions. [2023-11-29 01:02:23,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.92307692307692) internal successors, (454), 13 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:23,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:23,962 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:23,962 INFO L175 Difference]: Start difference. First operand has 263 places, 1037 transitions, 18624 flow. Second operand 13 states and 454 transitions. [2023-11-29 01:02:23,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 1392 transitions, 28063 flow [2023-11-29 01:02:27,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1392 transitions, 26947 flow, removed 505 selfloop flow, removed 2 redundant places. [2023-11-29 01:02:27,835 INFO L231 Difference]: Finished difference. Result has 282 places, 1092 transitions, 20438 flow [2023-11-29 01:02:27,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17550, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20438, PETRI_PLACES=282, PETRI_TRANSITIONS=1092} [2023-11-29 01:02:27,837 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 232 predicate places. [2023-11-29 01:02:27,838 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 1092 transitions, 20438 flow [2023-11-29 01:02:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 12 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:27,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:27,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:27,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:02:28,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 01:02:28,039 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:02:28,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 342312939, now seen corresponding path program 13 times [2023-11-29 01:02:28,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:28,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649002777] [2023-11-29 01:02:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:28,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:28,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649002777] [2023-11-29 01:02:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649002777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438963991] [2023-11-29 01:02:28,214 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:02:28,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:28,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:28,215 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:28,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:02:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:28,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:02:28,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:28,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438963991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:28,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-29 01:02:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907855535] [2023-11-29 01:02:28,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:02:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:02:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:02:28,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:02:28,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1092 transitions, 20438 flow. Second operand has 15 states, 15 states have (on average 28.133333333333333) internal successors, (422), 15 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:28,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:28,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:02:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:37,165 INFO L124 PetriNetUnfolderBase]: 11868/17632 cut-off events. [2023-11-29 01:02:37,165 INFO L125 PetriNetUnfolderBase]: For 553719/553809 co-relation queries the response was YES. [2023-11-29 01:02:37,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171058 conditions, 17632 events. 11868/17632 cut-off events. For 553719/553809 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 108949 event pairs, 602 based on Foata normal form. 593/18185 useless extension candidates. Maximal degree in co-relation 170937. Up to 6304 conditions per place. [2023-11-29 01:02:37,448 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 974 selfloop transitions, 1440 changer transitions 19/2442 dead transitions. [2023-11-29 01:02:37,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 2442 transitions, 52254 flow [2023-11-29 01:02:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-11-29 01:02:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-11-29 01:02:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 2706 transitions. [2023-11-29 01:02:37,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6854103343465046 [2023-11-29 01:02:37,453 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 2706 transitions. [2023-11-29 01:02:37,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 2706 transitions. [2023-11-29 01:02:37,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:37,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 2706 transitions. [2023-11-29 01:02:37,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 32.214285714285715) internal successors, (2706), 84 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:37,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 47.0) internal successors, (3995), 85 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:37,465 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 47.0) internal successors, (3995), 85 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:37,465 INFO L175 Difference]: Start difference. First operand has 282 places, 1092 transitions, 20438 flow. Second operand 84 states and 2706 transitions. [2023-11-29 01:02:37,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 2442 transitions, 52254 flow [2023-11-29 01:02:43,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 2442 transitions, 50490 flow, removed 674 selfloop flow, removed 4 redundant places. [2023-11-29 01:02:43,521 INFO L231 Difference]: Finished difference. Result has 403 places, 1901 transitions, 43446 flow [2023-11-29 01:02:43,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=19717, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=705, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=43446, PETRI_PLACES=403, PETRI_TRANSITIONS=1901} [2023-11-29 01:02:43,522 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 353 predicate places. [2023-11-29 01:02:43,522 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 1901 transitions, 43446 flow [2023-11-29 01:02:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 28.133333333333333) internal successors, (422), 15 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:43,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:43,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:43,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:02:43,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 01:02:43,723 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:02:43,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1911493363, now seen corresponding path program 14 times [2023-11-29 01:02:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090479527] [2023-11-29 01:02:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:43,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:43,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:43,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090479527] [2023-11-29 01:02:43,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090479527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:43,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363062381] [2023-11-29 01:02:43,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:02:43,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:43,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:43,841 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:43,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:02:43,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:02:43,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:02:43,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:02:43,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:44,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:44,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363062381] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:44,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:44,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-29 01:02:44,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579707037] [2023-11-29 01:02:44,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:44,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:02:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:02:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:02:44,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:02:44,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 1901 transitions, 43446 flow. Second operand has 15 states, 15 states have (on average 28.0) internal successors, (420), 15 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:44,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:44,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:02:44,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:58,361 INFO L124 PetriNetUnfolderBase]: 13320/19856 cut-off events. [2023-11-29 01:02:58,361 INFO L125 PetriNetUnfolderBase]: For 982322/982374 co-relation queries the response was YES. [2023-11-29 01:02:58,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229006 conditions, 19856 events. 13320/19856 cut-off events. For 982322/982374 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 126159 event pairs, 872 based on Foata normal form. 286/20116 useless extension candidates. Maximal degree in co-relation 228842. Up to 7296 conditions per place. [2023-11-29 01:02:58,980 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 1245 selfloop transitions, 1510 changer transitions 30/2794 dead transitions. [2023-11-29 01:02:58,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 2794 transitions, 71386 flow [2023-11-29 01:02:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 01:02:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-11-29 01:02:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 2322 transitions. [2023-11-29 01:02:58,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6767706208102594 [2023-11-29 01:02:58,985 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 2322 transitions. [2023-11-29 01:02:58,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 2322 transitions. [2023-11-29 01:02:58,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:58,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 2322 transitions. [2023-11-29 01:02:58,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 31.80821917808219) internal successors, (2322), 73 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:58,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 47.0) internal successors, (3478), 74 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:58,995 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 47.0) internal successors, (3478), 74 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:58,996 INFO L175 Difference]: Start difference. First operand has 403 places, 1901 transitions, 43446 flow. Second operand 73 states and 2322 transitions. [2023-11-29 01:02:58,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 2794 transitions, 71386 flow [2023-11-29 01:03:14,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 2794 transitions, 56611 flow, removed 6697 selfloop flow, removed 8 redundant places. [2023-11-29 01:03:14,743 INFO L231 Difference]: Finished difference. Result has 495 places, 2293 transitions, 45537 flow [2023-11-29 01:03:14,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=34952, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=45537, PETRI_PLACES=495, PETRI_TRANSITIONS=2293} [2023-11-29 01:03:14,745 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 445 predicate places. [2023-11-29 01:03:14,746 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 2293 transitions, 45537 flow [2023-11-29 01:03:14,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 28.0) internal successors, (420), 15 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:14,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:03:14,746 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:14,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:03:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:03:14,947 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:03:14,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash -376474792, now seen corresponding path program 15 times [2023-11-29 01:03:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526555143] [2023-11-29 01:03:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:03:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526555143] [2023-11-29 01:03:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526555143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490193918] [2023-11-29 01:03:15,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:03:15,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:15,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:15,118 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:15,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:03:15,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:03:15,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:03:15,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:03:15,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:15,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:03:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490193918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:03:15,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:03:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 01:03:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059520492] [2023-11-29 01:03:15,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:03:15,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:03:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:03:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:03:15,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:03:15,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 2293 transitions, 45537 flow. Second operand has 16 states, 16 states have (on average 27.9375) internal successors, (447), 16 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:15,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:03:15,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:03:15,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:03:30,534 INFO L124 PetriNetUnfolderBase]: 15313/22336 cut-off events. [2023-11-29 01:03:30,534 INFO L125 PetriNetUnfolderBase]: For 1039864/1039934 co-relation queries the response was YES. [2023-11-29 01:03:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251808 conditions, 22336 events. 15313/22336 cut-off events. For 1039864/1039934 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 138159 event pairs, 578 based on Foata normal form. 505/22827 useless extension candidates. Maximal degree in co-relation 251619. Up to 7234 conditions per place. [2023-11-29 01:03:31,201 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 2188 selfloop transitions, 1298 changer transitions 61/3556 dead transitions. [2023-11-29 01:03:31,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 3556 transitions, 81500 flow [2023-11-29 01:03:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 01:03:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-29 01:03:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1260 transitions. [2023-11-29 01:03:31,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7054871220604704 [2023-11-29 01:03:31,203 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1260 transitions. [2023-11-29 01:03:31,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1260 transitions. [2023-11-29 01:03:31,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:03:31,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1260 transitions. [2023-11-29 01:03:31,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 33.1578947368421) internal successors, (1260), 38 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:31,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 47.0) internal successors, (1833), 39 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:31,208 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 47.0) internal successors, (1833), 39 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:31,208 INFO L175 Difference]: Start difference. First operand has 495 places, 2293 transitions, 45537 flow. Second operand 38 states and 1260 transitions. [2023-11-29 01:03:31,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 3556 transitions, 81500 flow [2023-11-29 01:03:45,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 3556 transitions, 78746 flow, removed 996 selfloop flow, removed 13 redundant places. [2023-11-29 01:03:45,408 INFO L231 Difference]: Finished difference. Result has 539 places, 2620 transitions, 56659 flow [2023-11-29 01:03:45,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=42287, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=877, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=56659, PETRI_PLACES=539, PETRI_TRANSITIONS=2620} [2023-11-29 01:03:45,410 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 489 predicate places. [2023-11-29 01:03:45,410 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 2620 transitions, 56659 flow [2023-11-29 01:03:45,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.9375) internal successors, (447), 16 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:45,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:03:45,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:45,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:03:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 01:03:45,611 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:03:45,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1060311859, now seen corresponding path program 16 times [2023-11-29 01:03:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383927213] [2023-11-29 01:03:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383927213] [2023-11-29 01:03:45,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383927213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:45,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317304477] [2023-11-29 01:03:45,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:03:45,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:45,760 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:45,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:03:45,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:03:45,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:03:45,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:03:45,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:45,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:03:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317304477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:03:45,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:03:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 01:03:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099073686] [2023-11-29 01:03:45,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:03:45,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:03:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:03:45,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:03:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:03:45,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 2620 transitions, 56659 flow. Second operand has 15 states, 15 states have (on average 27.333333333333332) internal successors, (410), 15 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:45,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:03:45,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:03:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:04,483 INFO L124 PetriNetUnfolderBase]: 15223/22541 cut-off events. [2023-11-29 01:04:04,484 INFO L125 PetriNetUnfolderBase]: For 1236493/1236556 co-relation queries the response was YES. [2023-11-29 01:04:04,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263467 conditions, 22541 events. 15223/22541 cut-off events. For 1236493/1236556 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 143640 event pairs, 2583 based on Foata normal form. 280/22793 useless extension candidates. Maximal degree in co-relation 263259. Up to 15721 conditions per place. [2023-11-29 01:04:05,075 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 2064 selfloop transitions, 754 changer transitions 70/2897 dead transitions. [2023-11-29 01:04:05,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 2897 transitions, 68826 flow [2023-11-29 01:04:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:04:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:04:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 436 transitions. [2023-11-29 01:04:05,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7135842880523732 [2023-11-29 01:04:05,076 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 436 transitions. [2023-11-29 01:04:05,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 436 transitions. [2023-11-29 01:04:05,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:05,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 436 transitions. [2023-11-29 01:04:05,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:05,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:05,078 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:05,078 INFO L175 Difference]: Start difference. First operand has 539 places, 2620 transitions, 56659 flow. Second operand 13 states and 436 transitions. [2023-11-29 01:04:05,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 2897 transitions, 68826 flow [2023-11-29 01:04:21,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 2897 transitions, 63269 flow, removed 1907 selfloop flow, removed 12 redundant places. [2023-11-29 01:04:21,166 INFO L231 Difference]: Finished difference. Result has 535 places, 2564 transitions, 52745 flow [2023-11-29 01:04:21,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=51645, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=747, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=52745, PETRI_PLACES=535, PETRI_TRANSITIONS=2564} [2023-11-29 01:04:21,168 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 485 predicate places. [2023-11-29 01:04:21,168 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 2564 transitions, 52745 flow [2023-11-29 01:04:21,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.333333333333332) internal successors, (410), 15 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:21,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:21,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:21,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:04:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 01:04:21,369 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:04:21,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:21,369 INFO L85 PathProgramCache]: Analyzing trace with hash 706449995, now seen corresponding path program 17 times [2023-11-29 01:04:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934922762] [2023-11-29 01:04:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:04:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934922762] [2023-11-29 01:04:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934922762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918456592] [2023-11-29 01:04:21,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:04:21,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:21,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:21,474 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:21,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:04:21,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:04:21,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:04:21,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:04:21,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:04:21,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:04:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918456592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:21,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:21,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-29 01:04:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681042788] [2023-11-29 01:04:21,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:21,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:04:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:21,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:04:21,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:04:21,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:04:21,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 2564 transitions, 52745 flow. Second operand has 15 states, 15 states have (on average 27.933333333333334) internal successors, (419), 15 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:21,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:21,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:04:21,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:04:44,834 INFO L124 PetriNetUnfolderBase]: 20164/29047 cut-off events. [2023-11-29 01:04:44,834 INFO L125 PetriNetUnfolderBase]: For 1409318/1409401 co-relation queries the response was YES. [2023-11-29 01:04:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350501 conditions, 29047 events. 20164/29047 cut-off events. For 1409318/1409401 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 181760 event pairs, 789 based on Foata normal form. 321/29357 useless extension candidates. Maximal degree in co-relation 350296. Up to 9040 conditions per place. [2023-11-29 01:04:45,567 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 3116 selfloop transitions, 1678 changer transitions 152/4955 dead transitions. [2023-11-29 01:04:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 4955 transitions, 119518 flow [2023-11-29 01:04:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 01:04:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 01:04:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1585 transitions. [2023-11-29 01:04:45,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.674468085106383 [2023-11-29 01:04:45,570 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 1585 transitions. [2023-11-29 01:04:45,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 1585 transitions. [2023-11-29 01:04:45,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:04:45,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 1585 transitions. [2023-11-29 01:04:45,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 31.7) internal successors, (1585), 50 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:45,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 47.0) internal successors, (2397), 51 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:45,575 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 47.0) internal successors, (2397), 51 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:45,575 INFO L175 Difference]: Start difference. First operand has 535 places, 2564 transitions, 52745 flow. Second operand 50 states and 1585 transitions. [2023-11-29 01:04:45,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 4955 transitions, 119518 flow [2023-11-29 01:05:09,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 4955 transitions, 116410 flow, removed 296 selfloop flow, removed 13 redundant places. [2023-11-29 01:05:09,522 INFO L231 Difference]: Finished difference. Result has 604 places, 3336 transitions, 79011 flow [2023-11-29 01:05:09,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=51005, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=980, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=79011, PETRI_PLACES=604, PETRI_TRANSITIONS=3336} [2023-11-29 01:05:09,525 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 554 predicate places. [2023-11-29 01:05:09,525 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 3336 transitions, 79011 flow [2023-11-29 01:05:09,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.933333333333334) internal successors, (419), 15 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:09,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:05:09,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:09,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 01:05:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:09,726 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:05:09,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1567869199, now seen corresponding path program 18 times [2023-11-29 01:05:09,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:09,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761242344] [2023-11-29 01:05:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:09,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:09,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761242344] [2023-11-29 01:05:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761242344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649409394] [2023-11-29 01:05:09,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:05:09,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:09,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:09,878 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:09,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:05:09,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 01:05:09,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:05:10,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:05:10,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:10,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:10,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649409394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:10,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:05:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-11-29 01:05:10,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439703889] [2023-11-29 01:05:10,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:10,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:05:10,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:10,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:05:10,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:10,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:05:10,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 3336 transitions, 79011 flow. Second operand has 16 states, 16 states have (on average 27.4375) internal successors, (439), 16 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:10,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:05:10,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:05:10,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:05:45,973 INFO L124 PetriNetUnfolderBase]: 24322/35449 cut-off events. [2023-11-29 01:05:45,973 INFO L125 PetriNetUnfolderBase]: For 2177373/2177452 co-relation queries the response was YES. [2023-11-29 01:05:46,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455032 conditions, 35449 events. 24322/35449 cut-off events. For 2177373/2177452 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 235402 event pairs, 2716 based on Foata normal form. 485/35908 useless extension candidates. Maximal degree in co-relation 454792. Up to 18121 conditions per place. [2023-11-29 01:05:47,178 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 2464 selfloop transitions, 2395 changer transitions 10/4878 dead transitions. [2023-11-29 01:05:47,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 4878 transitions, 130028 flow [2023-11-29 01:05:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 01:05:47,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 01:05:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1720 transitions. [2023-11-29 01:05:47,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904857486953031 [2023-11-29 01:05:47,180 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 1720 transitions. [2023-11-29 01:05:47,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 1720 transitions. [2023-11-29 01:05:47,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:05:47,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 1720 transitions. [2023-11-29 01:05:47,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 32.45283018867924) internal successors, (1720), 53 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 47.0) internal successors, (2538), 54 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,185 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 47.0) internal successors, (2538), 54 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:47,185 INFO L175 Difference]: Start difference. First operand has 604 places, 3336 transitions, 79011 flow. Second operand 53 states and 1720 transitions. [2023-11-29 01:05:47,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 4878 transitions, 130028 flow [2023-11-29 01:06:25,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 4878 transitions, 122137 flow, removed 3724 selfloop flow, removed 6 redundant places. [2023-11-29 01:06:26,046 INFO L231 Difference]: Finished difference. Result has 688 places, 4107 transitions, 102262 flow [2023-11-29 01:06:26,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=74430, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1675, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=102262, PETRI_PLACES=688, PETRI_TRANSITIONS=4107} [2023-11-29 01:06:26,048 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 638 predicate places. [2023-11-29 01:06:26,048 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 4107 transitions, 102262 flow [2023-11-29 01:06:26,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.4375) internal successors, (439), 16 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:26,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:06:26,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:26,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:06:26,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:26,249 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:06:26,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1402928651, now seen corresponding path program 19 times [2023-11-29 01:06:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:26,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182095273] [2023-11-29 01:06:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:26,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:06:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182095273] [2023-11-29 01:06:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182095273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088799406] [2023-11-29 01:06:26,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:06:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:26,360 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:26,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:06:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:26,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:06:26,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:06:26,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:06:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088799406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:06:26,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:06:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 01:06:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291306694] [2023-11-29 01:06:26,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:26,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:06:26,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:06:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:06:26,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:06:26,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 4107 transitions, 102262 flow. Second operand has 16 states, 16 states have (on average 27.5) internal successors, (440), 16 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:26,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:06:26,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:06:26,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:07:10,854 INFO L124 PetriNetUnfolderBase]: 26726/39015 cut-off events. [2023-11-29 01:07:10,854 INFO L125 PetriNetUnfolderBase]: For 2349417/2349466 co-relation queries the response was YES. [2023-11-29 01:07:11,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509477 conditions, 39015 events. 26726/39015 cut-off events. For 2349417/2349466 co-relation queries the response was YES. Maximal size of possible extension queue 1970. Compared 263434 event pairs, 3920 based on Foata normal form. 287/39274 useless extension candidates. Maximal degree in co-relation 509203. Up to 24523 conditions per place. [2023-11-29 01:07:12,455 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 3519 selfloop transitions, 1474 changer transitions 88/5090 dead transitions. [2023-11-29 01:07:12,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 5090 transitions, 136588 flow [2023-11-29 01:07:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 01:07:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 01:07:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1015 transitions. [2023-11-29 01:07:12,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696636925188744 [2023-11-29 01:07:12,458 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1015 transitions. [2023-11-29 01:07:12,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1015 transitions. [2023-11-29 01:07:12,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:07:12,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1015 transitions. [2023-11-29 01:07:12,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 32.74193548387097) internal successors, (1015), 31 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:12,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 47.0) internal successors, (1504), 32 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:12,462 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 47.0) internal successors, (1504), 32 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:07:12,462 INFO L175 Difference]: Start difference. First operand has 688 places, 4107 transitions, 102262 flow. Second operand 31 states and 1015 transitions. [2023-11-29 01:07:12,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 5090 transitions, 136588 flow [2023-11-29 01:08:09,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 5090 transitions, 132269 flow, removed 1909 selfloop flow, removed 7 redundant places. [2023-11-29 01:08:10,087 INFO L231 Difference]: Finished difference. Result has 719 places, 4263 transitions, 106791 flow [2023-11-29 01:08:10,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98154, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4099, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=106791, PETRI_PLACES=719, PETRI_TRANSITIONS=4263} [2023-11-29 01:08:10,091 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 669 predicate places. [2023-11-29 01:08:10,091 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 4263 transitions, 106791 flow [2023-11-29 01:08:10,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.5) internal successors, (440), 16 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:10,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:08:10,091 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:10,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:08:10,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:10,292 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:08:10,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 755788283, now seen corresponding path program 20 times [2023-11-29 01:08:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:10,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862371696] [2023-11-29 01:08:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862371696] [2023-11-29 01:08:10,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862371696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061360388] [2023-11-29 01:08:10,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:08:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:10,430 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:10,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:08:10,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:08:10,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:08:10,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:08:10,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:10,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061360388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:10,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 01:08:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383035967] [2023-11-29 01:08:10,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:08:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:08:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:08:10,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:08:10,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 4263 transitions, 106791 flow. Second operand has 16 states, 16 states have (on average 27.25) internal successors, (436), 16 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:10,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:08:10,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:08:10,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:08,896 INFO L124 PetriNetUnfolderBase]: 35364/50698 cut-off events. [2023-11-29 01:09:08,896 INFO L125 PetriNetUnfolderBase]: For 3182291/3182335 co-relation queries the response was YES. [2023-11-29 01:09:10,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691370 conditions, 50698 events. 35364/50698 cut-off events. For 3182291/3182335 co-relation queries the response was YES. Maximal size of possible extension queue 2580. Compared 341404 event pairs, 3188 based on Foata normal form. 326/50988 useless extension candidates. Maximal degree in co-relation 691087. Up to 25090 conditions per place. [2023-11-29 01:09:11,045 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 3933 selfloop transitions, 2819 changer transitions 24/6785 dead transitions. [2023-11-29 01:09:11,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 6785 transitions, 191379 flow [2023-11-29 01:09:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:09:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 01:09:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 577 transitions. [2023-11-29 01:09:11,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7221526908635795 [2023-11-29 01:09:11,047 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 577 transitions. [2023-11-29 01:09:11,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 577 transitions. [2023-11-29 01:09:11,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:11,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 577 transitions. [2023-11-29 01:09:11,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 33.94117647058823) internal successors, (577), 17 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:11,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:11,048 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:11,048 INFO L175 Difference]: Start difference. First operand has 719 places, 4263 transitions, 106791 flow. Second operand 17 states and 577 transitions. [2023-11-29 01:09:11,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 6785 transitions, 191379 flow [2023-11-29 01:10:38,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 6785 transitions, 187475 flow, removed 699 selfloop flow, removed 18 redundant places. [2023-11-29 01:10:38,400 INFO L231 Difference]: Finished difference. Result has 721 places, 5723 transitions, 156717 flow [2023-11-29 01:10:38,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104324, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1587, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=156717, PETRI_PLACES=721, PETRI_TRANSITIONS=5723} [2023-11-29 01:10:38,404 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 671 predicate places. [2023-11-29 01:10:38,404 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 5723 transitions, 156717 flow [2023-11-29 01:10:38,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.25) internal successors, (436), 16 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:38,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:10:38,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:38,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:10:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:38,605 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:10:38,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1538215093, now seen corresponding path program 21 times [2023-11-29 01:10:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:38,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998120225] [2023-11-29 01:10:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998120225] [2023-11-29 01:10:38,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998120225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:10:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207304612] [2023-11-29 01:10:38,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:10:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:38,758 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:38,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:10:38,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:10:38,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:10:38,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:10:38,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:38,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:10:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207304612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:10:38,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:10:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 01:10:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169234299] [2023-11-29 01:10:38,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:10:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:10:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:10:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:10:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:10:38,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:10:38,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 5723 transitions, 156717 flow. Second operand has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 15 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:38,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:10:38,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:10:38,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:00,774 INFO L124 PetriNetUnfolderBase]: 35610/51309 cut-off events. [2023-11-29 01:12:00,774 INFO L125 PetriNetUnfolderBase]: For 3305354/3305420 co-relation queries the response was YES. [2023-11-29 01:12:02,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725994 conditions, 51309 events. 35610/51309 cut-off events. For 3305354/3305420 co-relation queries the response was YES. Maximal size of possible extension queue 2638. Compared 349836 event pairs, 3207 based on Foata normal form. 267/51540 useless extension candidates. Maximal degree in co-relation 725707. Up to 24918 conditions per place. [2023-11-29 01:12:02,987 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 4031 selfloop transitions, 2519 changer transitions 55/6614 dead transitions. [2023-11-29 01:12:02,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 6614 transitions, 192477 flow [2023-11-29 01:12:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:12:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:12:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 443 transitions. [2023-11-29 01:12:02,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7250409165302782 [2023-11-29 01:12:02,988 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 443 transitions. [2023-11-29 01:12:02,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 443 transitions. [2023-11-29 01:12:02,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:02,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 443 transitions. [2023-11-29 01:12:02,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.07692307692308) internal successors, (443), 13 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:02,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:02,990 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:02,990 INFO L175 Difference]: Start difference. First operand has 721 places, 5723 transitions, 156717 flow. Second operand 13 states and 443 transitions. [2023-11-29 01:12:02,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 6614 transitions, 192477 flow [2023-11-29 01:14:11,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 729 places, 6614 transitions, 185407 flow, removed 3139 selfloop flow, removed 4 redundant places. [2023-11-29 01:14:11,549 INFO L231 Difference]: Finished difference. Result has 731 places, 5732 transitions, 155049 flow [2023-11-29 01:14:11,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=149518, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=155049, PETRI_PLACES=731, PETRI_TRANSITIONS=5732} [2023-11-29 01:14:11,553 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 681 predicate places. [2023-11-29 01:14:11,553 INFO L495 AbstractCegarLoop]: Abstraction has has 731 places, 5732 transitions, 155049 flow [2023-11-29 01:14:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.266666666666666) internal successors, (409), 15 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:11,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:14:11,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:11,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:14:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:11,754 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-29 01:14:11,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1649317401, now seen corresponding path program 22 times [2023-11-29 01:14:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:14:11,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815155361] [2023-11-29 01:14:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:14:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:14:11,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:14:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815155361] [2023-11-29 01:14:11,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815155361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:14:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387226035] [2023-11-29 01:14:11,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:14:11,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:14:11,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:11,863 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:14:11,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e483b8de-1582-41c8-a114-34a2eb6048a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:14:11,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:14:11,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:14:11,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:14:11,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:14:12,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:14:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:14:12,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387226035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:14:12,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:14:12,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-29 01:14:12,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454463541] [2023-11-29 01:14:12,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:14:12,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:14:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:14:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:14:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:14:12,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-29 01:14:12,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 5732 transitions, 155049 flow. Second operand has 15 states, 15 states have (on average 27.466666666666665) internal successors, (412), 15 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:12,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:14:12,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-29 01:14:12,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand