./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.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_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/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_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/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_3667c489-2151-40dc-80c8-8b0a2f9083cb/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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:42:55,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:42:55,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:42:55,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:42:55,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:42:55,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:42:55,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:42:55,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:42:55,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:42:55,954 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:42:55,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:42:55,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:42:55,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:42:55,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:42:55,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:42:55,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:42:55,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:42:55,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:42:55,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:42:55,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:42:55,960 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:42:55,960 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:42:55,961 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:42:55,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:42:55,962 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:42:55,962 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:42:55,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:42:55,963 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:42:55,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:42:55,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:42:55,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:42:55,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:42:55,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:55,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:42:55,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:42:55,966 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:42:55,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:42:55,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:42:55,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:42:55,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:42:55,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:42:55,967 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_3667c489-2151-40dc-80c8-8b0a2f9083cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2023-11-29 00:42:56,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:42:56,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:42:56,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:42:56,214 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:42:56,214 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:42:56,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2023-11-29 00:42:58,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:42:59,111 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:42:59,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2023-11-29 00:42:59,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/data/943a1d385/37629185b65a445982ce35ee2dc35348/FLAGe7e1d83f0 [2023-11-29 00:42:59,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/data/943a1d385/37629185b65a445982ce35ee2dc35348 [2023-11-29 00:42:59,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:42:59,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:42:59,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:42:59,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:42:59,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:42:59,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5741a8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59, skipping insertion in model container [2023-11-29 00:42:59,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:42:59,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:42:59,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:42:59,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:42:59,374 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:42:59,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59 WrapperNode [2023-11-29 00:42:59,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:42:59,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:42:59,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:42:59,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:42:59,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,419 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2023-11-29 00:42:59,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:42:59,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:42:59,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:42:59,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:42:59,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,451 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2023-11-29 00:42:59,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:42:59,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:42:59,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:42:59,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:42:59,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (1/1) ... [2023-11-29 00:42:59,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:42:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:59,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:42:59,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:42:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:42:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:42:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:42:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:42:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:42:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:42:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:42:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 00:42:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 00:42:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:42:59,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:42:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:42:59,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:42:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:42:59,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:42:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 00:42:59,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 00:42:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:42:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:42:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:42:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:42:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:42:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:42:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 00:42:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-29 00:42:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-29 00:42:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-29 00:42:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-29 00:42:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:42:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:42:59,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:42:59,546 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:42:59,665 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:42:59,667 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:42:59,998 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:43:00,188 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:43:00,189 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 00:43:00,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:43:00 BoogieIcfgContainer [2023-11-29 00:43:00,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:43:00,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:43:00,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:43:00,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:43:00,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:42:59" (1/3) ... [2023-11-29 00:43:00,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4a4ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:43:00, skipping insertion in model container [2023-11-29 00:43:00,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:42:59" (2/3) ... [2023-11-29 00:43:00,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4a4ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:43:00, skipping insertion in model container [2023-11-29 00:43:00,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:43:00" (3/3) ... [2023-11-29 00:43:00,198 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2023-11-29 00:43:00,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:43:00,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 00:43:00,218 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:43:00,292 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-29 00:43:00,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 89 transitions, 220 flow [2023-11-29 00:43:00,371 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-11-29 00:43:00,371 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:43:00,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 83 events. 6/83 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-29 00:43:00,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 89 transitions, 220 flow [2023-11-29 00:43:00,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 82 transitions, 200 flow [2023-11-29 00:43:00,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:43:00,397 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;@73f51174, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:43:00,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-29 00:43:00,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:43:00,401 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 00:43:00,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:43:00,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:00,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:43:00,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:00,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash 14397, now seen corresponding path program 1 times [2023-11-29 00:43:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:00,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464831248] [2023-11-29 00:43:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:00,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464831248] [2023-11-29 00:43:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464831248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047541840] [2023-11-29 00:43:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:00,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:00,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:01,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 89 [2023-11-29 00:43:01,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:01,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:01,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 89 [2023-11-29 00:43:01,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:03,510 INFO L124 PetriNetUnfolderBase]: 21468/27414 cut-off events. [2023-11-29 00:43:03,510 INFO L125 PetriNetUnfolderBase]: For 969/969 co-relation queries the response was YES. [2023-11-29 00:43:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53019 conditions, 27414 events. 21468/27414 cut-off events. For 969/969 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 124966 event pairs, 10249 based on Foata normal form. 1/15081 useless extension candidates. Maximal degree in co-relation 46079. Up to 24505 conditions per place. [2023-11-29 00:43:03,842 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 33 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-11-29 00:43:03,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 78 transitions, 260 flow [2023-11-29 00:43:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2023-11-29 00:43:03,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7116104868913857 [2023-11-29 00:43:03,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2023-11-29 00:43:03,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2023-11-29 00:43:03,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:03,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2023-11-29 00:43:03,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,866 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 200 flow. Second operand 3 states and 190 transitions. [2023-11-29 00:43:03,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 78 transitions, 260 flow [2023-11-29 00:43:03,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 236 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 00:43:03,904 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 170 flow [2023-11-29 00:43:03,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2023-11-29 00:43:03,909 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -14 predicate places. [2023-11-29 00:43:03,909 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 170 flow [2023-11-29 00:43:03,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:03,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:03,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 00:43:03,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:43:03,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:03,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:03,911 INFO L85 PathProgramCache]: Analyzing trace with hash 14398, now seen corresponding path program 1 times [2023-11-29 00:43:03,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:03,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767283161] [2023-11-29 00:43:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:03,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:04,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:04,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767283161] [2023-11-29 00:43:04,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767283161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:04,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:04,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367965241] [2023-11-29 00:43:04,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:04,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:04,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 89 [2023-11-29 00:43:04,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:04,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 89 [2023-11-29 00:43:04,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:05,399 INFO L124 PetriNetUnfolderBase]: 15636/20368 cut-off events. [2023-11-29 00:43:05,399 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 00:43:05,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38679 conditions, 20368 events. 15636/20368 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 94074 event pairs, 7333 based on Foata normal form. 730/11882 useless extension candidates. Maximal degree in co-relation 38673. Up to 17943 conditions per place. [2023-11-29 00:43:05,482 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 31 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-11-29 00:43:05,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 230 flow [2023-11-29 00:43:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:05,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228464419475655 [2023-11-29 00:43:05,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:05,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:05,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:05,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:05,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,490 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 170 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:05,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 230 flow [2023-11-29 00:43:05,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:05,493 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 167 flow [2023-11-29 00:43:05,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-11-29 00:43:05,494 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -15 predicate places. [2023-11-29 00:43:05,495 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 167 flow [2023-11-29 00:43:05,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:05,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:43:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:43:05,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:05,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 429361500, now seen corresponding path program 1 times [2023-11-29 00:43:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039486716] [2023-11-29 00:43:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:05,768 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 00:43:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039486716] [2023-11-29 00:43:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039486716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345527544] [2023-11-29 00:43:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:05,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 89 [2023-11-29 00:43:05,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:05,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:05,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 89 [2023-11-29 00:43:05,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:07,222 INFO L124 PetriNetUnfolderBase]: 17256/22066 cut-off events. [2023-11-29 00:43:07,222 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2023-11-29 00:43:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42243 conditions, 22066 events. 17256/22066 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 97508 event pairs, 8144 based on Foata normal form. 0/12327 useless extension candidates. Maximal degree in co-relation 42236. Up to 19808 conditions per place. [2023-11-29 00:43:07,316 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 33 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-11-29 00:43:07,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 231 flow [2023-11-29 00:43:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:07,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 00:43:07,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2023-11-29 00:43:07,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 00:43:07,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 00:43:07,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:07,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 00:43:07,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,323 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 167 flow. Second operand 3 states and 189 transitions. [2023-11-29 00:43:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 231 flow [2023-11-29 00:43:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:07,326 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 164 flow [2023-11-29 00:43:07,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-29 00:43:07,327 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -16 predicate places. [2023-11-29 00:43:07,327 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 164 flow [2023-11-29 00:43:07,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:07,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:43:07,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:43:07,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:07,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash 429361501, now seen corresponding path program 1 times [2023-11-29 00:43:07,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985547343] [2023-11-29 00:43:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:07,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985547343] [2023-11-29 00:43:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985547343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767994286] [2023-11-29 00:43:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:07,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 89 [2023-11-29 00:43:07,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:07,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:07,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 89 [2023-11-29 00:43:07,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:08,673 INFO L124 PetriNetUnfolderBase]: 15636/20040 cut-off events. [2023-11-29 00:43:08,674 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 00:43:08,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38353 conditions, 20040 events. 15636/20040 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 88729 event pairs, 7333 based on Foata normal form. 246/11398 useless extension candidates. Maximal degree in co-relation 38345. Up to 17943 conditions per place. [2023-11-29 00:43:08,900 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 31 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-29 00:43:08,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 224 flow [2023-11-29 00:43:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:08,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228464419475655 [2023-11-29 00:43:08,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:08,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:08,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:08,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:08,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:08,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:08,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:08,906 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 164 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:08,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 224 flow [2023-11-29 00:43:08,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:08,910 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 161 flow [2023-11-29 00:43:08,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-11-29 00:43:08,911 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -17 predicate places. [2023-11-29 00:43:08,912 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 161 flow [2023-11-29 00:43:08,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:08,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:08,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:43:08,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:08,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash 696293002, now seen corresponding path program 1 times [2023-11-29 00:43:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640527870] [2023-11-29 00:43:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:09,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640527870] [2023-11-29 00:43:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640527870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:09,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:09,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:09,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799017504] [2023-11-29 00:43:09,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:09,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:09,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 89 [2023-11-29 00:43:09,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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 00:43:09,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:09,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 89 [2023-11-29 00:43:09,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:10,320 INFO L124 PetriNetUnfolderBase]: 15636/19980 cut-off events. [2023-11-29 00:43:10,320 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 00:43:10,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38294 conditions, 19980 events. 15636/19980 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 87967 event pairs, 7333 based on Foata normal form. 90/11242 useless extension candidates. Maximal degree in co-relation 38285. Up to 17943 conditions per place. [2023-11-29 00:43:10,404 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 31 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-11-29 00:43:10,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 221 flow [2023-11-29 00:43:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:10,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228464419475655 [2023-11-29 00:43:10,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:10,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:10,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:10,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:10,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:10,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:10,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:10,407 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 161 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:10,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 221 flow [2023-11-29 00:43:10,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:10,409 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 158 flow [2023-11-29 00:43:10,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-29 00:43:10,410 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -18 predicate places. [2023-11-29 00:43:10,410 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 158 flow [2023-11-29 00:43:10,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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 00:43:10,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:10,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:10,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:43:10,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:10,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash 696293001, now seen corresponding path program 1 times [2023-11-29 00:43:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:10,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357681748] [2023-11-29 00:43:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:10,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:10,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357681748] [2023-11-29 00:43:10,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357681748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:10,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:10,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:10,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143844350] [2023-11-29 00:43:10,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:10,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 89 [2023-11-29 00:43:10,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:10,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:10,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 89 [2023-11-29 00:43:10,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:11,634 INFO L124 PetriNetUnfolderBase]: 16076/20442 cut-off events. [2023-11-29 00:43:11,634 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-11-29 00:43:11,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39284 conditions, 20442 events. 16076/20442 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 88966 event pairs, 7556 based on Foata normal form. 0/11438 useless extension candidates. Maximal degree in co-relation 39274. Up to 18470 conditions per place. [2023-11-29 00:43:11,757 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 33 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-29 00:43:11,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 222 flow [2023-11-29 00:43:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 00:43:11,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2023-11-29 00:43:11,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 00:43:11,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 00:43:11,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:11,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 00:43:11,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,762 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 158 flow. Second operand 3 states and 189 transitions. [2023-11-29 00:43:11,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 222 flow [2023-11-29 00:43:11,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:11,764 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 155 flow [2023-11-29 00:43:11,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2023-11-29 00:43:11,765 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -19 predicate places. [2023-11-29 00:43:11,765 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 155 flow [2023-11-29 00:43:11,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:11,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:11,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:43:11,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:11,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1426783988, now seen corresponding path program 1 times [2023-11-29 00:43:11,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:11,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200208509] [2023-11-29 00:43:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:11,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:11,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:11,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200208509] [2023-11-29 00:43:11,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200208509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:11,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979803418] [2023-11-29 00:43:11,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:11,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:11,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:11,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 89 [2023-11-29 00:43:11,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:11,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:11,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 89 [2023-11-29 00:43:11,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:13,198 INFO L124 PetriNetUnfolderBase]: 15792/20074 cut-off events. [2023-11-29 00:43:13,198 INFO L125 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2023-11-29 00:43:13,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38591 conditions, 20074 events. 15792/20074 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 87338 event pairs, 7420 based on Foata normal form. 0/11287 useless extension candidates. Maximal degree in co-relation 38580. Up to 18144 conditions per place. [2023-11-29 00:43:13,311 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 33 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-11-29 00:43:13,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 66 transitions, 219 flow [2023-11-29 00:43:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 00:43:13,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2023-11-29 00:43:13,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 00:43:13,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 00:43:13,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:13,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 00:43:13,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,317 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 155 flow. Second operand 3 states and 189 transitions. [2023-11-29 00:43:13,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 66 transitions, 219 flow [2023-11-29 00:43:13,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:13,319 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 152 flow [2023-11-29 00:43:13,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-11-29 00:43:13,320 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -20 predicate places. [2023-11-29 00:43:13,320 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 152 flow [2023-11-29 00:43:13,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:13,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:43:13,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:13,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1426783987, now seen corresponding path program 1 times [2023-11-29 00:43:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287622296] [2023-11-29 00:43:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287622296] [2023-11-29 00:43:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287622296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:13,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:13,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:13,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867476261] [2023-11-29 00:43:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:13,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 89 [2023-11-29 00:43:13,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:13,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 89 [2023-11-29 00:43:13,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:14,819 INFO L124 PetriNetUnfolderBase]: 15636/19848 cut-off events. [2023-11-29 00:43:14,819 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 00:43:14,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38165 conditions, 19848 events. 15636/19848 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 86371 event pairs, 7333 based on Foata normal form. 54/11206 useless extension candidates. Maximal degree in co-relation 38153. Up to 17943 conditions per place. [2023-11-29 00:43:14,919 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 31 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-29 00:43:14,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 212 flow [2023-11-29 00:43:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:14,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228464419475655 [2023-11-29 00:43:14,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:14,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:14,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:14,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:14,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:14,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:14,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:14,922 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 152 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:14,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 212 flow [2023-11-29 00:43:14,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:14,923 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 149 flow [2023-11-29 00:43:14,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2023-11-29 00:43:14,924 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -21 predicate places. [2023-11-29 00:43:14,924 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 149 flow [2023-11-29 00:43:14,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:14,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:14,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:43:14,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:14,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1969997615, now seen corresponding path program 1 times [2023-11-29 00:43:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327140232] [2023-11-29 00:43:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327140232] [2023-11-29 00:43:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327140232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:15,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:15,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699109661] [2023-11-29 00:43:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:15,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 89 [2023-11-29 00:43:15,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:15,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:15,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 89 [2023-11-29 00:43:15,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:16,113 INFO L124 PetriNetUnfolderBase]: 15636/19788 cut-off events. [2023-11-29 00:43:16,113 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 00:43:16,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38106 conditions, 19788 events. 15636/19788 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 85487 event pairs, 7333 based on Foata normal form. 90/11242 useless extension candidates. Maximal degree in co-relation 38093. Up to 17943 conditions per place. [2023-11-29 00:43:16,209 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 31 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-29 00:43:16,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 209 flow [2023-11-29 00:43:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:16,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228464419475655 [2023-11-29 00:43:16,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:16,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:16,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:16,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:16,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,212 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 149 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:16,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 209 flow [2023-11-29 00:43:16,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:16,214 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 146 flow [2023-11-29 00:43:16,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-11-29 00:43:16,215 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -22 predicate places. [2023-11-29 00:43:16,215 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 146 flow [2023-11-29 00:43:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:16,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:43:16,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:16,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1969997614, now seen corresponding path program 1 times [2023-11-29 00:43:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450982941] [2023-11-29 00:43:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:16,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450982941] [2023-11-29 00:43:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450982941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:16,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883875731] [2023-11-29 00:43:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:16,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 89 [2023-11-29 00:43:16,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:16,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 89 [2023-11-29 00:43:16,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:17,269 INFO L124 PetriNetUnfolderBase]: 15876/20002 cut-off events. [2023-11-29 00:43:17,269 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-29 00:43:17,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38624 conditions, 20002 events. 15876/20002 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 85473 event pairs, 7480 based on Foata normal form. 0/11305 useless extension candidates. Maximal degree in co-relation 38610. Up to 18246 conditions per place. [2023-11-29 00:43:17,374 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 33 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-29 00:43:17,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 210 flow [2023-11-29 00:43:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 00:43:17,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2023-11-29 00:43:17,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 00:43:17,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 00:43:17,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:17,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 00:43:17,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,377 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 146 flow. Second operand 3 states and 189 transitions. [2023-11-29 00:43:17,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 210 flow [2023-11-29 00:43:17,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 60 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:17,378 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 143 flow [2023-11-29 00:43:17,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2023-11-29 00:43:17,379 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -23 predicate places. [2023-11-29 00:43:17,379 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 143 flow [2023-11-29 00:43:17,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:17,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:17,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:43:17,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:17,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1766249496, now seen corresponding path program 1 times [2023-11-29 00:43:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:17,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865380630] [2023-11-29 00:43:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865380630] [2023-11-29 00:43:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865380630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:17,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939144808] [2023-11-29 00:43:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:17,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:17,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 89 [2023-11-29 00:43:17,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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 00:43:17,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:17,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 89 [2023-11-29 00:43:17,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:18,437 INFO L124 PetriNetUnfolderBase]: 16504/20514 cut-off events. [2023-11-29 00:43:18,437 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2023-11-29 00:43:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39867 conditions, 20514 events. 16504/20514 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 84764 event pairs, 7848 based on Foata normal form. 0/11832 useless extension candidates. Maximal degree in co-relation 39852. Up to 18976 conditions per place. [2023-11-29 00:43:18,547 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 33 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-29 00:43:18,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 207 flow [2023-11-29 00:43:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:18,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-29 00:43:18,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2023-11-29 00:43:18,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-29 00:43:18,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-29 00:43:18,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:18,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-29 00:43:18,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,551 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 143 flow. Second operand 3 states and 189 transitions. [2023-11-29 00:43:18,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 207 flow [2023-11-29 00:43:18,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 58 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:18,553 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 140 flow [2023-11-29 00:43:18,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2023-11-29 00:43:18,554 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -24 predicate places. [2023-11-29 00:43:18,554 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 140 flow [2023-11-29 00:43:18,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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 00:43:18,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:18,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:43:18,554 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:18,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1766249497, now seen corresponding path program 1 times [2023-11-29 00:43:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981960209] [2023-11-29 00:43:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981960209] [2023-11-29 00:43:18,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981960209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:18,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:18,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:43:18,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078939626] [2023-11-29 00:43:18,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:18,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:18,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:18,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 89 [2023-11-29 00:43:18,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:18,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 89 [2023-11-29 00:43:18,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:19,597 INFO L124 PetriNetUnfolderBase]: 15636/19400 cut-off events. [2023-11-29 00:43:19,597 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-29 00:43:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37721 conditions, 19400 events. 15636/19400 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 78866 event pairs, 7333 based on Foata normal form. 246/11398 useless extension candidates. Maximal degree in co-relation 37705. Up to 17943 conditions per place. [2023-11-29 00:43:19,693 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 31 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-11-29 00:43:19,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 200 flow [2023-11-29 00:43:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:19,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228464419475655 [2023-11-29 00:43:19,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:19,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:19,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:19,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:19,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,697 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 140 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:19,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 200 flow [2023-11-29 00:43:19,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 56 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:19,699 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 137 flow [2023-11-29 00:43:19,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-11-29 00:43:19,700 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -25 predicate places. [2023-11-29 00:43:19,700 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 137 flow [2023-11-29 00:43:19,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:19,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:19,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:43:19,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:19,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:19,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2106324265, now seen corresponding path program 1 times [2023-11-29 00:43:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:19,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645507848] [2023-11-29 00:43:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:43:19,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:19,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645507848] [2023-11-29 00:43:19,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645507848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:19,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:19,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:43:19,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538843375] [2023-11-29 00:43:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:19,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:19,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:19,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:19,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:19,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:19,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:21,243 INFO L124 PetriNetUnfolderBase]: 21795/26332 cut-off events. [2023-11-29 00:43:21,243 INFO L125 PetriNetUnfolderBase]: For 487/490 co-relation queries the response was YES. [2023-11-29 00:43:21,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51881 conditions, 26332 events. 21795/26332 cut-off events. For 487/490 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 103073 event pairs, 4052 based on Foata normal form. 1/14898 useless extension candidates. Maximal degree in co-relation 51864. Up to 16365 conditions per place. [2023-11-29 00:43:21,393 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 49 selfloop transitions, 3 changer transitions 1/77 dead transitions. [2023-11-29 00:43:21,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 292 flow [2023-11-29 00:43:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-11-29 00:43:21,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8202247191011236 [2023-11-29 00:43:21,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-11-29 00:43:21,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-11-29 00:43:21,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:21,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-11-29 00:43:21,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,397 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 137 flow. Second operand 3 states and 219 transitions. [2023-11-29 00:43:21,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 292 flow [2023-11-29 00:43:21,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:21,399 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 155 flow [2023-11-29 00:43:21,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-29 00:43:21,399 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -23 predicate places. [2023-11-29 00:43:21,399 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 155 flow [2023-11-29 00:43:21,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:21,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:21,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:43:21,400 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:21,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash -86917304, now seen corresponding path program 1 times [2023-11-29 00:43:21,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:21,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531192775] [2023-11-29 00:43:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:21,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:43:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531192775] [2023-11-29 00:43:21,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531192775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:21,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:21,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:43:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3723388] [2023-11-29 00:43:21,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:21,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:21,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:21,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:21,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:21,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:23,270 INFO L124 PetriNetUnfolderBase]: 27521/33125 cut-off events. [2023-11-29 00:43:23,270 INFO L125 PetriNetUnfolderBase]: For 4412/4412 co-relation queries the response was YES. [2023-11-29 00:43:23,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71120 conditions, 33125 events. 27521/33125 cut-off events. For 4412/4412 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 132332 event pairs, 4314 based on Foata normal form. 1/22708 useless extension candidates. Maximal degree in co-relation 71101. Up to 23265 conditions per place. [2023-11-29 00:43:23,432 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 55 selfloop transitions, 3 changer transitions 3/85 dead transitions. [2023-11-29 00:43:23,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 350 flow [2023-11-29 00:43:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-29 00:43:23,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8352059925093633 [2023-11-29 00:43:23,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-29 00:43:23,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-29 00:43:23,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:23,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-29 00:43:23,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:23,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:23,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:23,436 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 155 flow. Second operand 3 states and 223 transitions. [2023-11-29 00:43:23,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 350 flow [2023-11-29 00:43:23,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:23,440 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 171 flow [2023-11-29 00:43:23,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2023-11-29 00:43:23,441 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -21 predicate places. [2023-11-29 00:43:23,441 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 171 flow [2023-11-29 00:43:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:23,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:23,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:43:23,441 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:23,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -675342093, now seen corresponding path program 1 times [2023-11-29 00:43:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438722528] [2023-11-29 00:43:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438722528] [2023-11-29 00:43:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438722528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:23,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:23,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:43:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666643271] [2023-11-29 00:43:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:23,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:23,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:23,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:23,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:23,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:26,177 INFO L124 PetriNetUnfolderBase]: 36425/45710 cut-off events. [2023-11-29 00:43:26,177 INFO L125 PetriNetUnfolderBase]: For 13136/13136 co-relation queries the response was YES. [2023-11-29 00:43:26,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103959 conditions, 45710 events. 36425/45710 cut-off events. For 13136/13136 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 216016 event pairs, 6150 based on Foata normal form. 1/39219 useless extension candidates. Maximal degree in co-relation 103938. Up to 30370 conditions per place. [2023-11-29 00:43:26,455 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 61 selfloop transitions, 3 changer transitions 5/93 dead transitions. [2023-11-29 00:43:26,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 404 flow [2023-11-29 00:43:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-11-29 00:43:26,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.850187265917603 [2023-11-29 00:43:26,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-11-29 00:43:26,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-11-29 00:43:26,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:26,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-11-29 00:43:26,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 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 00:43:26,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:26,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:26,458 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 171 flow. Second operand 3 states and 227 transitions. [2023-11-29 00:43:26,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 404 flow [2023-11-29 00:43:26,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:26,461 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 187 flow [2023-11-29 00:43:26,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2023-11-29 00:43:26,461 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -19 predicate places. [2023-11-29 00:43:26,461 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 187 flow [2023-11-29 00:43:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:26,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:26,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:26,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:43:26,462 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:26,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:26,462 INFO L85 PathProgramCache]: Analyzing trace with hash -467102237, now seen corresponding path program 1 times [2023-11-29 00:43:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:26,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721664360] [2023-11-29 00:43:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:26,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721664360] [2023-11-29 00:43:26,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721664360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:26,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:26,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457162935] [2023-11-29 00:43:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:26,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:26,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:26,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:26,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:26,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:29,399 INFO L124 PetriNetUnfolderBase]: 36299/44845 cut-off events. [2023-11-29 00:43:29,399 INFO L125 PetriNetUnfolderBase]: For 16713/16713 co-relation queries the response was YES. [2023-11-29 00:43:29,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108348 conditions, 44845 events. 36299/44845 cut-off events. For 16713/16713 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 199980 event pairs, 973 based on Foata normal form. 418/45213 useless extension candidates. Maximal degree in co-relation 108325. Up to 15425 conditions per place. [2023-11-29 00:43:29,673 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 106 selfloop transitions, 6 changer transitions 8/144 dead transitions. [2023-11-29 00:43:29,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 144 transitions, 665 flow [2023-11-29 00:43:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2023-11-29 00:43:29,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8539325842696629 [2023-11-29 00:43:29,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2023-11-29 00:43:29,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2023-11-29 00:43:29,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:29,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2023-11-29 00:43:29,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,678 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 187 flow. Second operand 5 states and 380 transitions. [2023-11-29 00:43:29,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 144 transitions, 665 flow [2023-11-29 00:43:29,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:29,682 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 208 flow [2023-11-29 00:43:29,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2023-11-29 00:43:29,682 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -15 predicate places. [2023-11-29 00:43:29,682 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 208 flow [2023-11-29 00:43:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:29,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:29,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:43:29,683 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:29,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1271102493, now seen corresponding path program 2 times [2023-11-29 00:43:29,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:29,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376260412] [2023-11-29 00:43:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:29,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:29,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376260412] [2023-11-29 00:43:29,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376260412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:29,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:29,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850771079] [2023-11-29 00:43:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:29,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:29,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:33,782 INFO L124 PetriNetUnfolderBase]: 37123/45925 cut-off events. [2023-11-29 00:43:33,782 INFO L125 PetriNetUnfolderBase]: For 27201/27293 co-relation queries the response was YES. [2023-11-29 00:43:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120201 conditions, 45925 events. 37123/45925 cut-off events. For 27201/27293 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 210147 event pairs, 4986 based on Foata normal form. 1013/46667 useless extension candidates. Maximal degree in co-relation 120176. Up to 21474 conditions per place. [2023-11-29 00:43:33,999 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 108 selfloop transitions, 6 changer transitions 7/145 dead transitions. [2023-11-29 00:43:33,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 145 transitions, 739 flow [2023-11-29 00:43:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:34,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-11-29 00:43:34,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8426966292134831 [2023-11-29 00:43:34,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-11-29 00:43:34,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-11-29 00:43:34,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:34,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-11-29 00:43:34,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:34,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:34,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:34,003 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 208 flow. Second operand 5 states and 375 transitions. [2023-11-29 00:43:34,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 145 transitions, 739 flow [2023-11-29 00:43:34,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 145 transitions, 726 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:34,008 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 241 flow [2023-11-29 00:43:34,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2023-11-29 00:43:34,009 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -10 predicate places. [2023-11-29 00:43:34,009 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 241 flow [2023-11-29 00:43:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:34,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:34,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:34,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:43:34,010 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:34,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash 89957929, now seen corresponding path program 1 times [2023-11-29 00:43:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932612728] [2023-11-29 00:43:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:34,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932612728] [2023-11-29 00:43:34,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932612728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:34,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:34,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:34,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809069893] [2023-11-29 00:43:34,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:34,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:34,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:34,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:34,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:34,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:34,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:37,526 INFO L124 PetriNetUnfolderBase]: 36711/46254 cut-off events. [2023-11-29 00:43:37,526 INFO L125 PetriNetUnfolderBase]: For 44436/44610 co-relation queries the response was YES. [2023-11-29 00:43:37,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133397 conditions, 46254 events. 36711/46254 cut-off events. For 44436/44610 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 220328 event pairs, 1081 based on Foata normal form. 823/46547 useless extension candidates. Maximal degree in co-relation 133369. Up to 19299 conditions per place. [2023-11-29 00:43:37,739 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 90 selfloop transitions, 4 changer transitions 34/152 dead transitions. [2023-11-29 00:43:37,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 152 transitions, 820 flow [2023-11-29 00:43:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2023-11-29 00:43:37,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8449438202247191 [2023-11-29 00:43:37,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2023-11-29 00:43:37,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2023-11-29 00:43:37,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:37,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2023-11-29 00:43:37,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:37,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:37,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:37,744 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 241 flow. Second operand 5 states and 376 transitions. [2023-11-29 00:43:37,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 152 transitions, 820 flow [2023-11-29 00:43:37,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 152 transitions, 803 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:37,763 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 234 flow [2023-11-29 00:43:37,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-11-29 00:43:37,764 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -7 predicate places. [2023-11-29 00:43:37,764 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 234 flow [2023-11-29 00:43:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:37,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:37,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:37,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:43:37,764 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:37,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash 647013176, now seen corresponding path program 1 times [2023-11-29 00:43:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233990973] [2023-11-29 00:43:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:37,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233990973] [2023-11-29 00:43:37,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233990973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:37,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:37,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:37,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224690627] [2023-11-29 00:43:37,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:37,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:37,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:37,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:37,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:37,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:37,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:40,453 INFO L124 PetriNetUnfolderBase]: 29341/34997 cut-off events. [2023-11-29 00:43:40,453 INFO L125 PetriNetUnfolderBase]: For 31407/31471 co-relation queries the response was YES. [2023-11-29 00:43:40,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107537 conditions, 34997 events. 29341/34997 cut-off events. For 31407/31471 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 136898 event pairs, 664 based on Foata normal form. 398/35304 useless extension candidates. Maximal degree in co-relation 107508. Up to 13517 conditions per place. [2023-11-29 00:43:40,655 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 80 selfloop transitions, 4 changer transitions 31/139 dead transitions. [2023-11-29 00:43:40,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 139 transitions, 745 flow [2023-11-29 00:43:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-11-29 00:43:40,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8337078651685393 [2023-11-29 00:43:40,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-11-29 00:43:40,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-11-29 00:43:40,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:40,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-11-29 00:43:40,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:40,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:40,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:40,660 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 234 flow. Second operand 5 states and 371 transitions. [2023-11-29 00:43:40,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 139 transitions, 745 flow [2023-11-29 00:43:40,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 717 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 00:43:40,991 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 237 flow [2023-11-29 00:43:40,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2023-11-29 00:43:40,992 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2023-11-29 00:43:40,992 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 237 flow [2023-11-29 00:43:40,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:40,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:40,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:40,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:43:40,992 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:40,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -59350012, now seen corresponding path program 2 times [2023-11-29 00:43:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:40,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634828306] [2023-11-29 00:43:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:43:41,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634828306] [2023-11-29 00:43:41,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634828306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:41,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:41,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:41,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113746591] [2023-11-29 00:43:41,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:41,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:41,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:41,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:41,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:41,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:41,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:41,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:41,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:43,061 INFO L124 PetriNetUnfolderBase]: 19045/23492 cut-off events. [2023-11-29 00:43:43,062 INFO L125 PetriNetUnfolderBase]: For 28531/28537 co-relation queries the response was YES. [2023-11-29 00:43:43,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72667 conditions, 23492 events. 19045/23492 cut-off events. For 28531/28537 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 96978 event pairs, 958 based on Foata normal form. 737/24194 useless extension candidates. Maximal degree in co-relation 72637. Up to 16472 conditions per place. [2023-11-29 00:43:43,191 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 116 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2023-11-29 00:43:43,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 146 transitions, 813 flow [2023-11-29 00:43:43,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-11-29 00:43:43,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8337078651685393 [2023-11-29 00:43:43,193 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-11-29 00:43:43,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-11-29 00:43:43,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:43,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-11-29 00:43:43,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:43,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:43,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:43,195 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 237 flow. Second operand 5 states and 371 transitions. [2023-11-29 00:43:43,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 146 transitions, 813 flow [2023-11-29 00:43:43,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 146 transitions, 800 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:43,205 INFO L231 Difference]: Finished difference. Result has 93 places, 68 transitions, 267 flow [2023-11-29 00:43:43,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=93, PETRI_TRANSITIONS=68} [2023-11-29 00:43:43,206 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -2 predicate places. [2023-11-29 00:43:43,206 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 68 transitions, 267 flow [2023-11-29 00:43:43,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:43,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:43,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:43:43,206 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -271967913, now seen corresponding path program 2 times [2023-11-29 00:43:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930544073] [2023-11-29 00:43:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:43:43,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:43,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930544073] [2023-11-29 00:43:43,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930544073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:43,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:43,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197561803] [2023-11-29 00:43:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:43,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:43,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:43,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:43,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 68 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:43,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:43,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:43,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:45,194 INFO L124 PetriNetUnfolderBase]: 18337/22032 cut-off events. [2023-11-29 00:43:45,194 INFO L125 PetriNetUnfolderBase]: For 30149/30155 co-relation queries the response was YES. [2023-11-29 00:43:45,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76204 conditions, 22032 events. 18337/22032 cut-off events. For 30149/30155 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 83513 event pairs, 686 based on Foata normal form. 709/22691 useless extension candidates. Maximal degree in co-relation 76171. Up to 15582 conditions per place. [2023-11-29 00:43:45,358 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 110 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2023-11-29 00:43:45,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 829 flow [2023-11-29 00:43:45,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2023-11-29 00:43:45,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8134831460674158 [2023-11-29 00:43:45,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2023-11-29 00:43:45,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2023-11-29 00:43:45,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:45,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2023-11-29 00:43:45,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:45,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:45,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:45,363 INFO L175 Difference]: Start difference. First operand has 93 places, 68 transitions, 267 flow. Second operand 5 states and 362 transitions. [2023-11-29 00:43:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 829 flow [2023-11-29 00:43:45,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 812 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:45,520 INFO L231 Difference]: Finished difference. Result has 98 places, 71 transitions, 303 flow [2023-11-29 00:43:45,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=98, PETRI_TRANSITIONS=71} [2023-11-29 00:43:45,521 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 3 predicate places. [2023-11-29 00:43:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 71 transitions, 303 flow [2023-11-29 00:43:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:45,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:45,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:45,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:43:45,522 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:45,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash -792228287, now seen corresponding path program 1 times [2023-11-29 00:43:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:45,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818202175] [2023-11-29 00:43:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:45,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:43:45,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818202175] [2023-11-29 00:43:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818202175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678306988] [2023-11-29 00:43:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:45,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:45,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:45,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 71 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:45,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:45,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:45,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:47,808 INFO L124 PetriNetUnfolderBase]: 17725/22162 cut-off events. [2023-11-29 00:43:47,808 INFO L125 PetriNetUnfolderBase]: For 43609/43615 co-relation queries the response was YES. [2023-11-29 00:43:47,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80130 conditions, 22162 events. 17725/22162 cut-off events. For 43609/43615 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 95134 event pairs, 729 based on Foata normal form. 629/22746 useless extension candidates. Maximal degree in co-relation 80094. Up to 15952 conditions per place. [2023-11-29 00:43:47,936 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 128 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-11-29 00:43:47,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 158 transitions, 1012 flow [2023-11-29 00:43:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-11-29 00:43:47,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8269662921348314 [2023-11-29 00:43:47,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-11-29 00:43:47,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-11-29 00:43:47,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:47,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-11-29 00:43:47,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:47,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:47,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:47,939 INFO L175 Difference]: Start difference. First operand has 98 places, 71 transitions, 303 flow. Second operand 5 states and 368 transitions. [2023-11-29 00:43:47,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 158 transitions, 1012 flow [2023-11-29 00:43:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 158 transitions, 979 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:48,042 INFO L231 Difference]: Finished difference. Result has 103 places, 74 transitions, 335 flow [2023-11-29 00:43:48,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=103, PETRI_TRANSITIONS=74} [2023-11-29 00:43:48,043 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 8 predicate places. [2023-11-29 00:43:48,043 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 74 transitions, 335 flow [2023-11-29 00:43:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:48,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:43:48,043 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:48,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1665567371, now seen corresponding path program 1 times [2023-11-29 00:43:48,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471189495] [2023-11-29 00:43:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:43:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471189495] [2023-11-29 00:43:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471189495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:48,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266272288] [2023-11-29 00:43:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:48,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:48,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:48,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:48,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 74 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:48,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:48,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:48,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:50,587 INFO L124 PetriNetUnfolderBase]: 19120/23992 cut-off events. [2023-11-29 00:43:50,587 INFO L125 PetriNetUnfolderBase]: For 70665/70718 co-relation queries the response was YES. [2023-11-29 00:43:50,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93025 conditions, 23992 events. 19120/23992 cut-off events. For 70665/70718 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 105333 event pairs, 3016 based on Foata normal form. 414/24241 useless extension candidates. Maximal degree in co-relation 92986. Up to 8871 conditions per place. [2023-11-29 00:43:50,739 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 142 selfloop transitions, 6 changer transitions 3/175 dead transitions. [2023-11-29 00:43:50,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 175 transitions, 1277 flow [2023-11-29 00:43:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2023-11-29 00:43:50,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8202247191011236 [2023-11-29 00:43:50,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 365 transitions. [2023-11-29 00:43:50,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 365 transitions. [2023-11-29 00:43:50,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:50,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 365 transitions. [2023-11-29 00:43:50,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:50,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:50,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:50,743 INFO L175 Difference]: Start difference. First operand has 103 places, 74 transitions, 335 flow. Second operand 5 states and 365 transitions. [2023-11-29 00:43:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 175 transitions, 1277 flow [2023-11-29 00:43:50,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 175 transitions, 1244 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:50,777 INFO L231 Difference]: Finished difference. Result has 108 places, 77 transitions, 363 flow [2023-11-29 00:43:50,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=108, PETRI_TRANSITIONS=77} [2023-11-29 00:43:50,778 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 13 predicate places. [2023-11-29 00:43:50,778 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 77 transitions, 363 flow [2023-11-29 00:43:50,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:50,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:50,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:50,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:43:50,778 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:50,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 496656906, now seen corresponding path program 1 times [2023-11-29 00:43:50,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:50,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113976619] [2023-11-29 00:43:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:43:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113976619] [2023-11-29 00:43:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113976619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:50,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:50,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932788133] [2023-11-29 00:43:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:50,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:50,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 77 transitions, 363 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:50,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:50,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:50,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:53,171 INFO L124 PetriNetUnfolderBase]: 18917/23178 cut-off events. [2023-11-29 00:43:53,171 INFO L125 PetriNetUnfolderBase]: For 70745/70803 co-relation queries the response was YES. [2023-11-29 00:43:53,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97474 conditions, 23178 events. 18917/23178 cut-off events. For 70745/70803 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 92912 event pairs, 993 based on Foata normal form. 213/23254 useless extension candidates. Maximal degree in co-relation 97432. Up to 9092 conditions per place. [2023-11-29 00:43:53,346 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 112 selfloop transitions, 4 changer transitions 39/179 dead transitions. [2023-11-29 00:43:53,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 179 transitions, 1309 flow [2023-11-29 00:43:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2023-11-29 00:43:53,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8157303370786517 [2023-11-29 00:43:53,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 363 transitions. [2023-11-29 00:43:53,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 363 transitions. [2023-11-29 00:43:53,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:53,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 363 transitions. [2023-11-29 00:43:53,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:53,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:53,351 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:53,351 INFO L175 Difference]: Start difference. First operand has 108 places, 77 transitions, 363 flow. Second operand 5 states and 363 transitions. [2023-11-29 00:43:53,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 179 transitions, 1309 flow [2023-11-29 00:43:53,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 179 transitions, 1303 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:53,538 INFO L231 Difference]: Finished difference. Result has 112 places, 77 transitions, 371 flow [2023-11-29 00:43:53,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=112, PETRI_TRANSITIONS=77} [2023-11-29 00:43:53,539 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 17 predicate places. [2023-11-29 00:43:53,539 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 77 transitions, 371 flow [2023-11-29 00:43:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:53,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:53,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:43:53,540 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:53,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1472052838, now seen corresponding path program 2 times [2023-11-29 00:43:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:53,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631795757] [2023-11-29 00:43:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:43:53,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:53,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631795757] [2023-11-29 00:43:53,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631795757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:53,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:53,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:53,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194956753] [2023-11-29 00:43:53,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:53,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:53,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:53,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:43:53,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 77 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:53,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:53,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:43:53,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:55,339 INFO L124 PetriNetUnfolderBase]: 12943/15969 cut-off events. [2023-11-29 00:43:55,339 INFO L125 PetriNetUnfolderBase]: For 47990/48044 co-relation queries the response was YES. [2023-11-29 00:43:55,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69169 conditions, 15969 events. 12943/15969 cut-off events. For 47990/48044 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 61953 event pairs, 1007 based on Foata normal form. 412/16298 useless extension candidates. Maximal degree in co-relation 69125. Up to 10371 conditions per place. [2023-11-29 00:43:55,463 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 140 selfloop transitions, 6 changer transitions 0/170 dead transitions. [2023-11-29 00:43:55,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 170 transitions, 1266 flow [2023-11-29 00:43:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-11-29 00:43:55,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8 [2023-11-29 00:43:55,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-11-29 00:43:55,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-11-29 00:43:55,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:55,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-11-29 00:43:55,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:55,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:55,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:55,468 INFO L175 Difference]: Start difference. First operand has 112 places, 77 transitions, 371 flow. Second operand 5 states and 356 transitions. [2023-11-29 00:43:55,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 170 transitions, 1266 flow [2023-11-29 00:43:55,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 170 transitions, 1259 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:55,599 INFO L231 Difference]: Finished difference. Result has 116 places, 80 transitions, 405 flow [2023-11-29 00:43:55,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=116, PETRI_TRANSITIONS=80} [2023-11-29 00:43:55,599 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 21 predicate places. [2023-11-29 00:43:55,600 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 80 transitions, 405 flow [2023-11-29 00:43:55,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:55,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:55,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:55,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:43:55,600 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:43:55,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash -630337610, now seen corresponding path program 1 times [2023-11-29 00:43:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:55,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737378958] [2023-11-29 00:43:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:43:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737378958] [2023-11-29 00:43:56,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737378958] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:43:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125987253] [2023-11-29 00:43:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:56,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:56,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:43:56,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:43:56,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:43:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:57,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:43:57,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:44:22,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:44:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:44:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125987253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:44:25,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:44:25,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 14 [2023-11-29 00:44:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140039247] [2023-11-29 00:44:25,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:44:25,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:44:25,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:25,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:44:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=143, Unknown=2, NotChecked=0, Total=210 [2023-11-29 00:44:25,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:44:25,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 80 transitions, 405 flow. Second operand has 15 states, 15 states have (on average 61.266666666666666) internal successors, (919), 15 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:25,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:25,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:44:25,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:30,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:43,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:44:58,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:12,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:23,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:28,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:32,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:36,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:45:41,841 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 52 DAG size of output: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:45:55,014 INFO L124 PetriNetUnfolderBase]: 69022/83692 cut-off events. [2023-11-29 00:45:55,015 INFO L125 PetriNetUnfolderBase]: For 293289/293297 co-relation queries the response was YES. [2023-11-29 00:45:55,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382840 conditions, 83692 events. 69022/83692 cut-off events. For 293289/293297 co-relation queries the response was YES. Maximal size of possible extension queue 2675. Compared 389547 event pairs, 1014 based on Foata normal form. 867/84556 useless extension candidates. Maximal degree in co-relation 382793. Up to 14838 conditions per place. [2023-11-29 00:45:55,864 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 476 selfloop transitions, 78 changer transitions 105/683 dead transitions. [2023-11-29 00:45:55,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 683 transitions, 5521 flow [2023-11-29 00:45:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:45:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 00:45:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1483 transitions. [2023-11-29 00:45:55,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8331460674157304 [2023-11-29 00:45:55,869 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1483 transitions. [2023-11-29 00:45:55,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1483 transitions. [2023-11-29 00:45:55,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:55,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1483 transitions. [2023-11-29 00:45:55,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 74.15) internal successors, (1483), 20 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:55,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 89.0) internal successors, (1869), 21 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:55,877 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 89.0) internal successors, (1869), 21 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:55,877 INFO L175 Difference]: Start difference. First operand has 116 places, 80 transitions, 405 flow. Second operand 20 states and 1483 transitions. [2023-11-29 00:45:55,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 683 transitions, 5521 flow [2023-11-29 00:45:58,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 683 transitions, 5494 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-29 00:45:58,934 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 1342 flow [2023-11-29 00:45:58,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1342, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2023-11-29 00:45:58,935 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 56 predicate places. [2023-11-29 00:45:58,935 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 1342 flow [2023-11-29 00:45:58,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 61.266666666666666) internal successors, (919), 15 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:58,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:58,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:58,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:45:59,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-29 00:45:59,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1209252170, now seen corresponding path program 2 times [2023-11-29 00:45:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:45:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848401531] [2023-11-29 00:45:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:45:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:45:59,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:45:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848401531] [2023-11-29 00:45:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848401531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:45:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454847205] [2023-11-29 00:45:59,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:45:59,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:45:59,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:45:59,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:45:59,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3667c489-2151-40dc-80c8-8b0a2f9083cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:46:08,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:46:08,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:46:08,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:46:08,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:46:55,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:47:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:47:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454847205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:47:25,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:47:25,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2023-11-29 00:47:25,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745470742] [2023-11-29 00:47:25,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:47:25,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:47:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:47:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:47:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=280, Unknown=5, NotChecked=0, Total=420 [2023-11-29 00:47:25,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 89 [2023-11-29 00:47:25,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 157 transitions, 1342 flow. Second operand has 21 states, 21 states have (on average 59.57142857142857) internal successors, (1251), 21 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:25,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:47:25,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 89 [2023-11-29 00:47:25,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:48:02,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:06,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:16,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:20,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:25,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:35,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:39,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:48,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:48:55,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:13,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:17,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:21,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:27,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:29,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:34,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:49:51,948 WARN L293 SmtUtils]: Spent 14.84s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:49:56,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:50:02,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 00:55:08,011 WARN L293 SmtUtils]: Spent 5.08m on a formula simplification. DAG size of input: 82 DAG size of output: 79 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:55:11,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []