./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i --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_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme --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 a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:29,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:30,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:51:30,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:30,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:30,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:30,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:30,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:30,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:30,153 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:30,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:30,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:30,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:30,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:30,156 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:30,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:30,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:30,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:30,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:30,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:30,160 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:51:30,161 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:51:30,161 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:51:30,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:30,162 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:51:30,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:51:30,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:30,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:30,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:30,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:30,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:30,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:30,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:30,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:30,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:30,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:30,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:30,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:30,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:30,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:30,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:30,180 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_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2023-11-26 11:51:30,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:30,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:30,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:30,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:30,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:30,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-26 11:51:33,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:34,299 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:34,300 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-26 11:51:34,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/data/b13586f30/72d4fa47468f4e68adbce6109a0d12fe/FLAG11f6a20e3 [2023-11-26 11:51:34,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/data/b13586f30/72d4fa47468f4e68adbce6109a0d12fe [2023-11-26 11:51:34,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:34,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:34,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:34,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:34,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:34,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:34" (1/1) ... [2023-11-26 11:51:34,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de31cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:34, skipping insertion in model container [2023-11-26 11:51:34,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:34" (1/1) ... [2023-11-26 11:51:34,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:35,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:35,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:35,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:35,845 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:35,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35 WrapperNode [2023-11-26 11:51:35,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:35,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:35,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:35,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:35,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:35,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:35,942 INFO L138 Inliner]: procedures = 487, calls = 45, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 225 [2023-11-26 11:51:35,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:35,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:51:35,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:51:35,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:51:35,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:35,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:35,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,002 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 3, 3, 5, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 1, 1, 5, 0, 0]. The 4 writes are split as follows [0, 1, 1, 0, 1, 1]. [2023-11-26 11:51:36,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:51:36,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:51:36,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:51:36,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:51:36,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (1/1) ... [2023-11-26 11:51:36,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:36,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:51:36,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:51:36,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-11-26 11:51:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-11-26 11:51:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:51:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:51:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:51:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:51:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:51:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:51:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:51:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-11-26 11:51:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-11-26 11:51:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:51:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:51:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:51:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:51:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:51:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:51:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:51:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:51:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:51:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:51:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:51:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:51:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:51:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:51:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:51:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:51:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:51:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:51:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:51:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:51:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:51:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:51:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:51:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:51:36,206 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:51:36,593 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:51:36,601 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:51:37,025 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:51:37,276 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:51:37,276 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:51:37,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:37 BoogieIcfgContainer [2023-11-26 11:51:37,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:51:37,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:51:37,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:51:37,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:51:37,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:34" (1/3) ... [2023-11-26 11:51:37,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa25b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:37, skipping insertion in model container [2023-11-26 11:51:37,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:35" (2/3) ... [2023-11-26 11:51:37,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa25b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:37, skipping insertion in model container [2023-11-26 11:51:37,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:37" (3/3) ... [2023-11-26 11:51:37,292 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-11-26 11:51:37,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:51:37,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-26 11:51:37,314 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:51:37,400 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-26 11:51:37,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 170 transitions, 367 flow [2023-11-26 11:51:37,513 INFO L124 PetriNetUnfolderBase]: 36/177 cut-off events. [2023-11-26 11:51:37,513 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:51:37,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 177 events. 36/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 624 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 122. Up to 11 conditions per place. [2023-11-26 11:51:37,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 170 transitions, 367 flow [2023-11-26 11:51:37,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 118 transitions, 252 flow [2023-11-26 11:51:37,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:37,552 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;@240ea5f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:37,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-26 11:51:37,561 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:51:37,565 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-11-26 11:51:37,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:51:37,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:37,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:51:37,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:37,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 20019396, now seen corresponding path program 1 times [2023-11-26 11:51:37,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607512888] [2023-11-26 11:51:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:38,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:38,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607512888] [2023-11-26 11:51:38,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607512888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:38,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:38,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771008697] [2023-11-26 11:51:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:38,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 170 [2023-11-26 11:51:38,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:38,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:38,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 170 [2023-11-26 11:51:38,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:38,973 INFO L124 PetriNetUnfolderBase]: 2021/3877 cut-off events. [2023-11-26 11:51:38,973 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-26 11:51:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 3877 events. 2021/3877 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 26451 event pairs, 1646 based on Foata normal form. 334/3650 useless extension candidates. Maximal degree in co-relation 6596. Up to 2970 conditions per place. [2023-11-26 11:51:39,016 INFO L140 encePairwiseOnDemand]: 153/170 looper letters, 54 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2023-11-26 11:51:39,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 336 flow [2023-11-26 11:51:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-11-26 11:51:39,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627450980392157 [2023-11-26 11:51:39,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-11-26 11:51:39,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-11-26 11:51:39,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:39,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-11-26 11:51:39,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:39,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:39,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:39,060 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 252 flow. Second operand 3 states and 287 transitions. [2023-11-26 11:51:39,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 336 flow [2023-11-26 11:51:39,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:39,073 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 202 flow [2023-11-26 11:51:39,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2023-11-26 11:51:39,081 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -15 predicate places. [2023-11-26 11:51:39,081 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 202 flow [2023-11-26 11:51:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:39,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:39,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:51:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:39,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:39,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash 620587447, now seen corresponding path program 1 times [2023-11-26 11:51:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:39,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746580213] [2023-11-26 11:51:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:39,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746580213] [2023-11-26 11:51:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746580213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:39,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:39,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:51:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942022605] [2023-11-26 11:51:39,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:39,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:51:39,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:39,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:39,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:51:39,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:40,779 INFO L124 PetriNetUnfolderBase]: 4864/9372 cut-off events. [2023-11-26 11:51:40,779 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-26 11:51:40,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16173 conditions, 9372 events. 4864/9372 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 67029 event pairs, 2815 based on Foata normal form. 169/8034 useless extension candidates. Maximal degree in co-relation 15807. Up to 3771 conditions per place. [2023-11-26 11:51:40,864 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 81 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2023-11-26 11:51:40,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 456 flow [2023-11-26 11:51:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-26 11:51:40,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592156862745098 [2023-11-26 11:51:40,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-26 11:51:40,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-26 11:51:40,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:40,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-26 11:51:40,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:40,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:40,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:40,887 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 202 flow. Second operand 3 states and 302 transitions. [2023-11-26 11:51:40,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 456 flow [2023-11-26 11:51:40,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:40,894 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 207 flow [2023-11-26 11:51:40,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2023-11-26 11:51:40,896 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -15 predicate places. [2023-11-26 11:51:40,896 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 207 flow [2023-11-26 11:51:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:40,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:51:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:51:40,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:40,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:40,899 INFO L85 PathProgramCache]: Analyzing trace with hash 620587448, now seen corresponding path program 1 times [2023-11-26 11:51:40,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:40,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066265733] [2023-11-26 11:51:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:41,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066265733] [2023-11-26 11:51:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066265733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:51:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748279457] [2023-11-26 11:51:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:41,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:51:41,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:41,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:41,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:51:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:42,221 INFO L124 PetriNetUnfolderBase]: 3991/7587 cut-off events. [2023-11-26 11:51:42,222 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-26 11:51:42,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13621 conditions, 7587 events. 3991/7587 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 51917 event pairs, 3287 based on Foata normal form. 338/6825 useless extension candidates. Maximal degree in co-relation 6678. Up to 5920 conditions per place. [2023-11-26 11:51:42,285 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 47 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-26 11:51:42,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 88 transitions, 299 flow [2023-11-26 11:51:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-11-26 11:51:42,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-11-26 11:51:42,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-11-26 11:51:42,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-11-26 11:51:42,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:42,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-11-26 11:51:42,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:42,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:42,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:42,292 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 207 flow. Second operand 3 states and 264 transitions. [2023-11-26 11:51:42,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 88 transitions, 299 flow [2023-11-26 11:51:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:42,299 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 202 flow [2023-11-26 11:51:42,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2023-11-26 11:51:42,301 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -16 predicate places. [2023-11-26 11:51:42,301 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 202 flow [2023-11-26 11:51:42,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:42,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:42,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:42,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:51:42,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:42,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1138101395, now seen corresponding path program 1 times [2023-11-26 11:51:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635374385] [2023-11-26 11:51:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:42,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635374385] [2023-11-26 11:51:42,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635374385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:42,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:51:42,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306153361] [2023-11-26 11:51:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:42,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:42,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:42,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:42,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:43,726 INFO L124 PetriNetUnfolderBase]: 4568/8987 cut-off events. [2023-11-26 11:51:43,726 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-26 11:51:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15979 conditions, 8987 events. 4568/8987 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 66228 event pairs, 2436 based on Foata normal form. 0/7482 useless extension candidates. Maximal degree in co-relation 15970. Up to 4153 conditions per place. [2023-11-26 11:51:43,796 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 79 selfloop transitions, 6 changer transitions 3/126 dead transitions. [2023-11-26 11:51:43,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 465 flow [2023-11-26 11:51:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-11-26 11:51:43,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596078431372549 [2023-11-26 11:51:43,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-11-26 11:51:43,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-11-26 11:51:43,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:43,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-11-26 11:51:43,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:43,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:43,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:43,804 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 202 flow. Second operand 3 states and 304 transitions. [2023-11-26 11:51:43,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 465 flow [2023-11-26 11:51:43,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:43,809 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 245 flow [2023-11-26 11:51:43,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2023-11-26 11:51:43,810 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -13 predicate places. [2023-11-26 11:51:43,811 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 245 flow [2023-11-26 11:51:43,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:43,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:43,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:43,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:51:43,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:43,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 516684618, now seen corresponding path program 1 times [2023-11-26 11:51:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454828417] [2023-11-26 11:51:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:44,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454828417] [2023-11-26 11:51:44,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454828417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:51:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682305014] [2023-11-26 11:51:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:44,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2023-11-26 11:51:44,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 245 flow. Second operand has 3 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) [2023-11-26 11:51:44,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:44,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2023-11-26 11:51:44,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:45,189 INFO L124 PetriNetUnfolderBase]: 4180/7985 cut-off events. [2023-11-26 11:51:45,189 INFO L125 PetriNetUnfolderBase]: For 1922/2096 co-relation queries the response was YES. [2023-11-26 11:51:45,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15713 conditions, 7985 events. 4180/7985 cut-off events. For 1922/2096 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 55973 event pairs, 3231 based on Foata normal form. 334/7556 useless extension candidates. Maximal degree in co-relation 15701. Up to 6304 conditions per place. [2023-11-26 11:51:45,371 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 50 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-26 11:51:45,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 88 transitions, 343 flow [2023-11-26 11:51:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-11-26 11:51:45,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-11-26 11:51:45,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-11-26 11:51:45,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-11-26 11:51:45,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:45,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-11-26 11:51:45,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:45,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:45,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:45,378 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 245 flow. Second operand 3 states and 256 transitions. [2023-11-26 11:51:45,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 88 transitions, 343 flow [2023-11-26 11:51:45,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:45,385 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 231 flow [2023-11-26 11:51:45,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2023-11-26 11:51:45,387 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2023-11-26 11:51:45,387 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 231 flow [2023-11-26 11:51:45,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-26 11:51:45,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:45,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:51:45,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:45,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 516684617, now seen corresponding path program 1 times [2023-11-26 11:51:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288124410] [2023-11-26 11:51:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288124410] [2023-11-26 11:51:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288124410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:51:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951211283] [2023-11-26 11:51:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:45,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:45,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2023-11-26 11:51:45,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 231 flow. Second operand has 3 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) [2023-11-26 11:51:45,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:45,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2023-11-26 11:51:45,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:46,838 INFO L124 PetriNetUnfolderBase]: 5012/9274 cut-off events. [2023-11-26 11:51:46,838 INFO L125 PetriNetUnfolderBase]: For 994/1185 co-relation queries the response was YES. [2023-11-26 11:51:46,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17401 conditions, 9274 events. 5012/9274 cut-off events. For 994/1185 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 64180 event pairs, 2981 based on Foata normal form. 156/8673 useless extension candidates. Maximal degree in co-relation 17389. Up to 4100 conditions per place. [2023-11-26 11:51:46,901 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 85 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2023-11-26 11:51:46,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 499 flow [2023-11-26 11:51:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-11-26 11:51:46,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2023-11-26 11:51:46,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-11-26 11:51:46,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-11-26 11:51:46,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:46,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-11-26 11:51:46,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:46,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:46,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:46,908 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 231 flow. Second operand 3 states and 295 transitions. [2023-11-26 11:51:46,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 499 flow [2023-11-26 11:51:46,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:46,913 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 246 flow [2023-11-26 11:51:46,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-11-26 11:51:46,914 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -15 predicate places. [2023-11-26 11:51:46,914 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 246 flow [2023-11-26 11:51:46,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-26 11:51:46,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:46,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:46,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:51:46,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:46,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash -972338928, now seen corresponding path program 1 times [2023-11-26 11:51:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:46,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435838515] [2023-11-26 11:51:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:47,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435838515] [2023-11-26 11:51:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435838515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570981446] [2023-11-26 11:51:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:47,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:47,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 170 [2023-11-26 11:51:47,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:47,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:47,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 170 [2023-11-26 11:51:47,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:48,219 INFO L124 PetriNetUnfolderBase]: 5266/9455 cut-off events. [2023-11-26 11:51:48,219 INFO L125 PetriNetUnfolderBase]: For 1059/1240 co-relation queries the response was YES. [2023-11-26 11:51:48,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18235 conditions, 9455 events. 5266/9455 cut-off events. For 1059/1240 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 63606 event pairs, 2155 based on Foata normal form. 12/8448 useless extension candidates. Maximal degree in co-relation 18221. Up to 4327 conditions per place. [2023-11-26 11:51:48,300 INFO L140 encePairwiseOnDemand]: 162/170 looper letters, 70 selfloop transitions, 8 changer transitions 0/112 dead transitions. [2023-11-26 11:51:48,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 458 flow [2023-11-26 11:51:48,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-26 11:51:48,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2023-11-26 11:51:48,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-26 11:51:48,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-26 11:51:48,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:48,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-26 11:51:48,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:48,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:48,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:48,309 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 246 flow. Second operand 3 states and 276 transitions. [2023-11-26 11:51:48,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 458 flow [2023-11-26 11:51:48,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:48,316 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 286 flow [2023-11-26 11:51:48,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2023-11-26 11:51:48,317 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -13 predicate places. [2023-11-26 11:51:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 286 flow [2023-11-26 11:51:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:48,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:48,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:48,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:51:48,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:48,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1857591837, now seen corresponding path program 1 times [2023-11-26 11:51:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633797285] [2023-11-26 11:51:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:48,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633797285] [2023-11-26 11:51:48,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633797285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:48,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:48,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403158500] [2023-11-26 11:51:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:48,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:48,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:51:48,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:48,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:48,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:51:48,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:49,485 INFO L124 PetriNetUnfolderBase]: 4324/7916 cut-off events. [2023-11-26 11:51:49,485 INFO L125 PetriNetUnfolderBase]: For 2280/2458 co-relation queries the response was YES. [2023-11-26 11:51:49,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16529 conditions, 7916 events. 4324/7916 cut-off events. For 2280/2458 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 52291 event pairs, 2815 based on Foata normal form. 0/7294 useless extension candidates. Maximal degree in co-relation 16513. Up to 5554 conditions per place. [2023-11-26 11:51:49,546 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 63 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2023-11-26 11:51:49,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 458 flow [2023-11-26 11:51:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-11-26 11:51:49,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2023-11-26 11:51:49,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-11-26 11:51:49,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-11-26 11:51:49,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:49,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-11-26 11:51:49,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:49,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:49,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:49,555 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 286 flow. Second operand 3 states and 278 transitions. [2023-11-26 11:51:49,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 458 flow [2023-11-26 11:51:49,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 442 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:49,562 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 272 flow [2023-11-26 11:51:49,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-11-26 11:51:49,563 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -19 predicate places. [2023-11-26 11:51:49,563 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 272 flow [2023-11-26 11:51:49,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:49,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:49,564 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] [2023-11-26 11:51:49,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:51:49,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:49,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -991604292, now seen corresponding path program 1 times [2023-11-26 11:51:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:49,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578819788] [2023-11-26 11:51:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:49,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578819788] [2023-11-26 11:51:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578819788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:49,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197377957] [2023-11-26 11:51:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:49,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:49,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:49,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:49,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:49,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:49,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:50,914 INFO L124 PetriNetUnfolderBase]: 4207/8302 cut-off events. [2023-11-26 11:51:50,914 INFO L125 PetriNetUnfolderBase]: For 2007/2183 co-relation queries the response was YES. [2023-11-26 11:51:50,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16991 conditions, 8302 events. 4207/8302 cut-off events. For 2007/2183 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 60936 event pairs, 2762 based on Foata normal form. 6/7648 useless extension candidates. Maximal degree in co-relation 16976. Up to 5307 conditions per place. [2023-11-26 11:51:50,996 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 78 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2023-11-26 11:51:50,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 553 flow [2023-11-26 11:51:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-11-26 11:51:50,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2023-11-26 11:51:51,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-11-26 11:51:51,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-11-26 11:51:51,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:51,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-11-26 11:51:51,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:51,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:51,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:51,006 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 272 flow. Second operand 3 states and 295 transitions. [2023-11-26 11:51:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 553 flow [2023-11-26 11:51:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 529 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:51,015 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 313 flow [2023-11-26 11:51:51,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2023-11-26 11:51:51,016 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -17 predicate places. [2023-11-26 11:51:51,017 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 313 flow [2023-11-26 11:51:51,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:51,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:51,018 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] [2023-11-26 11:51:51,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:51:51,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:51,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash -793181699, now seen corresponding path program 1 times [2023-11-26 11:51:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932204453] [2023-11-26 11:51:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:51,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932204453] [2023-11-26 11:51:51,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932204453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:51,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533785633] [2023-11-26 11:51:51,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:51,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:51,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:51,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:51,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:51,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:51,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:52,510 INFO L124 PetriNetUnfolderBase]: 4194/8250 cut-off events. [2023-11-26 11:51:52,510 INFO L125 PetriNetUnfolderBase]: For 3404/3584 co-relation queries the response was YES. [2023-11-26 11:51:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17319 conditions, 8250 events. 4194/8250 cut-off events. For 3404/3584 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 60320 event pairs, 2752 based on Foata normal form. 45/7650 useless extension candidates. Maximal degree in co-relation 17303. Up to 4933 conditions per place. [2023-11-26 11:51:52,578 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 80 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-11-26 11:51:52,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 568 flow [2023-11-26 11:51:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-11-26 11:51:52,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2023-11-26 11:51:52,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-11-26 11:51:52,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-11-26 11:51:52,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:52,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-11-26 11:51:52,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:52,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:52,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:52,586 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 313 flow. Second operand 3 states and 292 transitions. [2023-11-26 11:51:52,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 568 flow [2023-11-26 11:51:52,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 554 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:52,598 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 305 flow [2023-11-26 11:51:52,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2023-11-26 11:51:52,602 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -18 predicate places. [2023-11-26 11:51:52,602 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 305 flow [2023-11-26 11:51:52,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:52,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:52,603 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] [2023-11-26 11:51:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:51:52,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:52,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash -578261484, now seen corresponding path program 1 times [2023-11-26 11:51:52,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656641183] [2023-11-26 11:51:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656641183] [2023-11-26 11:51:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656641183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:52,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:52,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595445873] [2023-11-26 11:51:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:52,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:52,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:52,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:52,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:52,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:52,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:53,614 INFO L124 PetriNetUnfolderBase]: 4197/7622 cut-off events. [2023-11-26 11:51:53,614 INFO L125 PetriNetUnfolderBase]: For 3389/3556 co-relation queries the response was YES. [2023-11-26 11:51:53,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 7622 events. 4197/7622 cut-off events. For 3389/3556 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 50286 event pairs, 2740 based on Foata normal form. 0/6954 useless extension candidates. Maximal degree in co-relation 16606. Up to 5360 conditions per place. [2023-11-26 11:51:53,666 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 77 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-11-26 11:51:53,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 109 transitions, 555 flow [2023-11-26 11:51:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-26 11:51:53,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549019607843138 [2023-11-26 11:51:53,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-26 11:51:53,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-26 11:51:53,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:53,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-26 11:51:53,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:53,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:53,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:53,673 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 305 flow. Second operand 3 states and 283 transitions. [2023-11-26 11:51:53,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 109 transitions, 555 flow [2023-11-26 11:51:53,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:53,683 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 295 flow [2023-11-26 11:51:53,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-11-26 11:51:53,684 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2023-11-26 11:51:53,684 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 295 flow [2023-11-26 11:51:53,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:53,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:53,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:53,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:51:53,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:53,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1247536510, now seen corresponding path program 1 times [2023-11-26 11:51:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:53,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793280077] [2023-11-26 11:51:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:53,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793280077] [2023-11-26 11:51:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793280077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:53,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653778359] [2023-11-26 11:51:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:53,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:53,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 170 [2023-11-26 11:51:53,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:53,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:53,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 170 [2023-11-26 11:51:53,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:54,438 INFO L124 PetriNetUnfolderBase]: 2453/4533 cut-off events. [2023-11-26 11:51:54,439 INFO L125 PetriNetUnfolderBase]: For 1215/1216 co-relation queries the response was YES. [2023-11-26 11:51:54,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 4533 events. 2453/4533 cut-off events. For 1215/1216 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 28038 event pairs, 807 based on Foata normal form. 323/4518 useless extension candidates. Maximal degree in co-relation 10047. Up to 2326 conditions per place. [2023-11-26 11:51:54,472 INFO L140 encePairwiseOnDemand]: 166/170 looper letters, 107 selfloop transitions, 4 changer transitions 1/143 dead transitions. [2023-11-26 11:51:54,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 143 transitions, 712 flow [2023-11-26 11:51:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2023-11-26 11:51:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808823529411765 [2023-11-26 11:51:54,475 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2023-11-26 11:51:54,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2023-11-26 11:51:54,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:54,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2023-11-26 11:51:54,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:54,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:54,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:54,481 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 295 flow. Second operand 4 states and 395 transitions. [2023-11-26 11:51:54,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 143 transitions, 712 flow [2023-11-26 11:51:54,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 698 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:54,494 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 270 flow [2023-11-26 11:51:54,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-11-26 11:51:54,498 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -20 predicate places. [2023-11-26 11:51:54,498 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 270 flow [2023-11-26 11:51:54,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:54,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:54,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:54,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:51:54,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_usbThread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:54,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1766904693, now seen corresponding path program 1 times [2023-11-26 11:51:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230945852] [2023-11-26 11:51:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:54,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:54,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230945852] [2023-11-26 11:51:54,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230945852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:54,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:54,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:54,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833178952] [2023-11-26 11:51:54,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:54,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:54,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:54,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2023-11-26 11:51:54,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:54,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:54,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2023-11-26 11:51:54,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:55,144 INFO L124 PetriNetUnfolderBase]: 2255/4487 cut-off events. [2023-11-26 11:51:55,144 INFO L125 PetriNetUnfolderBase]: For 2894/2895 co-relation queries the response was YES. [2023-11-26 11:51:55,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 4487 events. 2255/4487 cut-off events. For 2894/2895 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 28818 event pairs, 853 based on Foata normal form. 324/4533 useless extension candidates. Maximal degree in co-relation 9985. Up to 1744 conditions per place. [2023-11-26 11:51:55,175 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 61 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-11-26 11:51:55,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 443 flow [2023-11-26 11:51:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-26 11:51:55,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313725490196078 [2023-11-26 11:51:55,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-26 11:51:55,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-26 11:51:55,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:55,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-26 11:51:55,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:55,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:55,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:55,182 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 270 flow. Second operand 3 states and 271 transitions. [2023-11-26 11:51:55,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 443 flow [2023-11-26 11:51:55,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 421 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:51:55,189 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 262 flow [2023-11-26 11:51:55,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-11-26 11:51:55,191 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2023-11-26 11:51:55,191 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 262 flow [2023-11-26 11:51:55,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:55,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:55,192 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] [2023-11-26 11:51:55,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:51:55,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:55,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:55,193 INFO L85 PathProgramCache]: Analyzing trace with hash 235280482, now seen corresponding path program 1 times [2023-11-26 11:51:55,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:55,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427039659] [2023-11-26 11:51:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:55,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:55,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:55,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427039659] [2023-11-26 11:51:55,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427039659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:55,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:55,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:55,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139978217] [2023-11-26 11:51:55,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:55,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:55,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:55,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:55,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:55,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:55,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:56,116 INFO L124 PetriNetUnfolderBase]: 2205/4375 cut-off events. [2023-11-26 11:51:56,117 INFO L125 PetriNetUnfolderBase]: For 1664/1670 co-relation queries the response was YES. [2023-11-26 11:51:56,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9048 conditions, 4375 events. 2205/4375 cut-off events. For 1664/1670 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 27117 event pairs, 1156 based on Foata normal form. 15/4136 useless extension candidates. Maximal degree in co-relation 9032. Up to 1988 conditions per place. [2023-11-26 11:51:56,144 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 87 selfloop transitions, 4 changer transitions 8/127 dead transitions. [2023-11-26 11:51:56,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 127 transitions, 587 flow [2023-11-26 11:51:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-11-26 11:51:56,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705882352941176 [2023-11-26 11:51:56,147 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-11-26 11:51:56,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-11-26 11:51:56,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:56,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-11-26 11:51:56,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,152 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,152 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 262 flow. Second operand 4 states and 388 transitions. [2023-11-26 11:51:56,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 127 transitions, 587 flow [2023-11-26 11:51:56,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:56,159 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 268 flow [2023-11-26 11:51:56,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-11-26 11:51:56,161 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2023-11-26 11:51:56,161 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 268 flow [2023-11-26 11:51:56,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:56,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:51:56,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1399693640, now seen corresponding path program 1 times [2023-11-26 11:51:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095759325] [2023-11-26 11:51:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095759325] [2023-11-26 11:51:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095759325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:56,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:56,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415028563] [2023-11-26 11:51:56,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:56,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:56,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:56,880 INFO L124 PetriNetUnfolderBase]: 1971/4083 cut-off events. [2023-11-26 11:51:56,880 INFO L125 PetriNetUnfolderBase]: For 2483/2484 co-relation queries the response was YES. [2023-11-26 11:51:56,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8811 conditions, 4083 events. 1971/4083 cut-off events. For 2483/2484 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 26111 event pairs, 1479 based on Foata normal form. 9/3845 useless extension candidates. Maximal degree in co-relation 8792. Up to 2820 conditions per place. [2023-11-26 11:51:56,897 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 52 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-26 11:51:56,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 414 flow [2023-11-26 11:51:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-11-26 11:51:56,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-26 11:51:56,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-11-26 11:51:56,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-11-26 11:51:56,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:56,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-11-26 11:51:56,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,903 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 268 flow. Second operand 3 states and 272 transitions. [2023-11-26 11:51:56,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 414 flow [2023-11-26 11:51:56,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 401 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-26 11:51:56,913 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 267 flow [2023-11-26 11:51:56,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-11-26 11:51:56,914 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -23 predicate places. [2023-11-26 11:51:56,914 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 267 flow [2023-11-26 11:51:56,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:56,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:56,929 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:56,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:51:56,929 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:56,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1399693641, now seen corresponding path program 1 times [2023-11-26 11:51:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036201756] [2023-11-26 11:51:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:57,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036201756] [2023-11-26 11:51:57,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036201756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:57,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:57,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:57,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873999912] [2023-11-26 11:51:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:57,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:57,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:57,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:51:57,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:57,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:57,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:51:57,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:57,612 INFO L124 PetriNetUnfolderBase]: 1971/4075 cut-off events. [2023-11-26 11:51:57,612 INFO L125 PetriNetUnfolderBase]: For 2284/2285 co-relation queries the response was YES. [2023-11-26 11:51:57,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8697 conditions, 4075 events. 1971/4075 cut-off events. For 2284/2285 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 26027 event pairs, 1479 based on Foata normal form. 9/3837 useless extension candidates. Maximal degree in co-relation 8680. Up to 2820 conditions per place. [2023-11-26 11:51:57,629 INFO L140 encePairwiseOnDemand]: 167/170 looper letters, 52 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2023-11-26 11:51:57,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 413 flow [2023-11-26 11:51:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:51:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-11-26 11:51:57,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-26 11:51:57,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-11-26 11:51:57,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-11-26 11:51:57,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:57,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-11-26 11:51:57,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:57,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:57,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:57,637 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 267 flow. Second operand 3 states and 272 transitions. [2023-11-26 11:51:57,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 413 flow [2023-11-26 11:51:57,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 86 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:57,647 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 265 flow [2023-11-26 11:51:57,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-11-26 11:51:57,648 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2023-11-26 11:51:57,648 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 265 flow [2023-11-26 11:51:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:57,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:57,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:57,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:51:57,649 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:57,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1064490987, now seen corresponding path program 1 times [2023-11-26 11:51:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:57,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94735652] [2023-11-26 11:51:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:51:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94735652] [2023-11-26 11:51:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94735652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530105111] [2023-11-26 11:51:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:58,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 170 [2023-11-26 11:51:58,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:58,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:58,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 170 [2023-11-26 11:51:58,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:58,964 INFO L124 PetriNetUnfolderBase]: 2737/5131 cut-off events. [2023-11-26 11:51:58,964 INFO L125 PetriNetUnfolderBase]: For 2813/2814 co-relation queries the response was YES. [2023-11-26 11:51:58,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10977 conditions, 5131 events. 2737/5131 cut-off events. For 2813/2814 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 31564 event pairs, 2075 based on Foata normal form. 269/5081 useless extension candidates. Maximal degree in co-relation 10960. Up to 3823 conditions per place. [2023-11-26 11:51:58,992 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 63 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-11-26 11:51:58,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 457 flow [2023-11-26 11:51:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-11-26 11:51:58,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2023-11-26 11:51:58,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-11-26 11:51:58,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-11-26 11:51:58,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:58,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-11-26 11:51:58,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:58,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,000 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,000 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 265 flow. Second operand 4 states and 343 transitions. [2023-11-26 11:51:59,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 457 flow [2023-11-26 11:51:59,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:59,009 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 265 flow [2023-11-26 11:51:59,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2023-11-26 11:51:59,010 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2023-11-26 11:51:59,010 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 265 flow [2023-11-26 11:51:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:59,010 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:59,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:51:59,011 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1557997342, now seen corresponding path program 1 times [2023-11-26 11:51:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498871504] [2023-11-26 11:51:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:51:59,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498871504] [2023-11-26 11:51:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498871504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:59,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:59,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:59,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710951780] [2023-11-26 11:51:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:59,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:59,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:59,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:59,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 170 [2023-11-26 11:51:59,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:59,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 170 [2023-11-26 11:51:59,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:59,771 INFO L124 PetriNetUnfolderBase]: 2155/4114 cut-off events. [2023-11-26 11:51:59,771 INFO L125 PetriNetUnfolderBase]: For 2392/2393 co-relation queries the response was YES. [2023-11-26 11:51:59,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8914 conditions, 4114 events. 2155/4114 cut-off events. For 2392/2393 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 24327 event pairs, 1496 based on Foata normal form. 65/3924 useless extension candidates. Maximal degree in co-relation 8896. Up to 2808 conditions per place. [2023-11-26 11:51:59,793 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 62 selfloop transitions, 9 changer transitions 0/93 dead transitions. [2023-11-26 11:51:59,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 449 flow [2023-11-26 11:51:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-11-26 11:51:59,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47941176470588237 [2023-11-26 11:51:59,796 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-11-26 11:51:59,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-11-26 11:51:59,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:59,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-11-26 11:51:59,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,800 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 265 flow. Second operand 4 states and 326 transitions. [2023-11-26 11:51:59,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 449 flow [2023-11-26 11:51:59,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 428 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:51:59,809 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 254 flow [2023-11-26 11:51:59,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-11-26 11:51:59,810 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2023-11-26 11:51:59,810 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 254 flow [2023-11-26 11:51:59,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:59,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:59,811 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:59,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:51:59,811 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:51:59,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash 347858697, now seen corresponding path program 1 times [2023-11-26 11:51:59,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:59,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427710397] [2023-11-26 11:51:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:59,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:00,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427710397] [2023-11-26 11:52:00,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427710397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:00,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:00,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867659309] [2023-11-26 11:52:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:00,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:00,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:00,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:52:00,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:00,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:00,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:52:00,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:00,763 INFO L124 PetriNetUnfolderBase]: 2127/4337 cut-off events. [2023-11-26 11:52:00,763 INFO L125 PetriNetUnfolderBase]: For 2516/2528 co-relation queries the response was YES. [2023-11-26 11:52:00,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9205 conditions, 4337 events. 2127/4337 cut-off events. For 2516/2528 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 28231 event pairs, 1252 based on Foata normal form. 12/4068 useless extension candidates. Maximal degree in co-relation 9188. Up to 2268 conditions per place. [2023-11-26 11:52:00,778 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 81 selfloop transitions, 11 changer transitions 0/115 dead transitions. [2023-11-26 11:52:00,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 582 flow [2023-11-26 11:52:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:00,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:52:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2023-11-26 11:52:00,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485294117647059 [2023-11-26 11:52:00,781 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2023-11-26 11:52:00,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2023-11-26 11:52:00,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:00,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2023-11-26 11:52:00,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:00,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:00,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:00,786 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 254 flow. Second operand 4 states and 373 transitions. [2023-11-26 11:52:00,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 582 flow [2023-11-26 11:52:00,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 556 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:52:00,796 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 333 flow [2023-11-26 11:52:00,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-11-26 11:52:00,797 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -24 predicate places. [2023-11-26 11:52:00,798 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 333 flow [2023-11-26 11:52:00,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:00,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:00,798 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:52:00,799 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:52:00,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash 845472863, now seen corresponding path program 2 times [2023-11-26 11:52:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058973045] [2023-11-26 11:52:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:01,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:01,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058973045] [2023-11-26 11:52:01,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058973045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:01,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:01,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:01,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827914465] [2023-11-26 11:52:01,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:01,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:01,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:01,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:01,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:52:01,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:01,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:01,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:52:01,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:01,900 INFO L124 PetriNetUnfolderBase]: 2121/4366 cut-off events. [2023-11-26 11:52:01,901 INFO L125 PetriNetUnfolderBase]: For 4557/4575 co-relation queries the response was YES. [2023-11-26 11:52:01,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9782 conditions, 4366 events. 2121/4366 cut-off events. For 4557/4575 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 28483 event pairs, 1131 based on Foata normal form. 30/4136 useless extension candidates. Maximal degree in co-relation 9764. Up to 1787 conditions per place. [2023-11-26 11:52:01,927 INFO L140 encePairwiseOnDemand]: 165/170 looper letters, 86 selfloop transitions, 17 changer transitions 0/126 dead transitions. [2023-11-26 11:52:01,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 672 flow [2023-11-26 11:52:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2023-11-26 11:52:01,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317647058823529 [2023-11-26 11:52:01,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2023-11-26 11:52:01,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2023-11-26 11:52:01,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:01,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2023-11-26 11:52:01,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:01,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:01,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:01,937 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 333 flow. Second operand 5 states and 452 transitions. [2023-11-26 11:52:01,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 672 flow [2023-11-26 11:52:01,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 126 transitions, 656 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-26 11:52:01,955 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 378 flow [2023-11-26 11:52:01,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-26 11:52:01,956 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -21 predicate places. [2023-11-26 11:52:01,956 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 378 flow [2023-11-26 11:52:01,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:01,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:01,958 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:52:01,958 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:52:01,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2143671329, now seen corresponding path program 1 times [2023-11-26 11:52:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087118059] [2023-11-26 11:52:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:52:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087118059] [2023-11-26 11:52:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087118059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:02,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:02,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462954281] [2023-11-26 11:52:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:02,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2023-11-26 11:52:02,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:02,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:02,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2023-11-26 11:52:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:03,069 INFO L124 PetriNetUnfolderBase]: 2219/4567 cut-off events. [2023-11-26 11:52:03,069 INFO L125 PetriNetUnfolderBase]: For 6180/6204 co-relation queries the response was YES. [2023-11-26 11:52:03,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10510 conditions, 4567 events. 2219/4567 cut-off events. For 6180/6204 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30001 event pairs, 1199 based on Foata normal form. 35/4339 useless extension candidates. Maximal degree in co-relation 10491. Up to 1786 conditions per place. [2023-11-26 11:52:03,088 INFO L140 encePairwiseOnDemand]: 164/170 looper letters, 103 selfloop transitions, 10 changer transitions 8/143 dead transitions. [2023-11-26 11:52:03,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 143 transitions, 787 flow [2023-11-26 11:52:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2023-11-26 11:52:03,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-11-26 11:52:03,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2023-11-26 11:52:03,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2023-11-26 11:52:03,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:03,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2023-11-26 11:52:03,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:03,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:03,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:03,097 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 378 flow. Second operand 5 states and 476 transitions. [2023-11-26 11:52:03,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 143 transitions, 787 flow [2023-11-26 11:52:03,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 769 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-26 11:52:03,128 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 405 flow [2023-11-26 11:52:03,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2023-11-26 11:52:03,129 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -15 predicate places. [2023-11-26 11:52:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 405 flow [2023-11-26 11:52:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:03,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:03,130 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:03,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:52:03,130 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:52:03,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 125674993, now seen corresponding path program 2 times [2023-11-26 11:52:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67157720] [2023-11-26 11:52:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67157720] [2023-11-26 11:52:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67157720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702025116] [2023-11-26 11:52:03,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:52:03,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:03,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:03,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:03,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:03,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:52:03,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:52:03,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:03,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:04,055 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-26 11:52:04,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2023-11-26 11:52:04,102 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-26 11:52:04,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 29 [2023-11-26 11:52:04,392 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-11-26 11:52:04,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 44 [2023-11-26 11:52:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:04,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:05,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702025116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:05,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:05,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2023-11-26 11:52:05,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376393697] [2023-11-26 11:52:05,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:05,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:52:05,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:52:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:06,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:52:06,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 405 flow. Second operand has 14 states, 14 states have (on average 77.71428571428571) internal successors, (1088), 14 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:06,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:06,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:52:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:07,317 INFO L124 PetriNetUnfolderBase]: 2514/5073 cut-off events. [2023-11-26 11:52:07,317 INFO L125 PetriNetUnfolderBase]: For 10460/10490 co-relation queries the response was YES. [2023-11-26 11:52:07,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12226 conditions, 5073 events. 2514/5073 cut-off events. For 10460/10490 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31756 event pairs, 1343 based on Foata normal form. 42/4813 useless extension candidates. Maximal degree in co-relation 12203. Up to 2272 conditions per place. [2023-11-26 11:52:07,347 INFO L140 encePairwiseOnDemand]: 163/170 looper letters, 94 selfloop transitions, 3 changer transitions 69/188 dead transitions. [2023-11-26 11:52:07,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 188 transitions, 1022 flow [2023-11-26 11:52:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:52:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:52:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 731 transitions. [2023-11-26 11:52:07,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2023-11-26 11:52:07,351 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 731 transitions. [2023-11-26 11:52:07,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 731 transitions. [2023-11-26 11:52:07,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:07,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 731 transitions. [2023-11-26 11:52:07,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.375) internal successors, (731), 8 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:07,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:07,359 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:07,359 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 405 flow. Second operand 8 states and 731 transitions. [2023-11-26 11:52:07,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 188 transitions, 1022 flow [2023-11-26 11:52:07,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 188 transitions, 984 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-26 11:52:07,400 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 361 flow [2023-11-26 11:52:07,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=361, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2023-11-26 11:52:07,401 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -8 predicate places. [2023-11-26 11:52:07,401 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 361 flow [2023-11-26 11:52:07,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 77.71428571428571) internal successors, (1088), 14 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:07,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:07,402 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:07,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:07,611 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-26 11:52:07,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -621609339, now seen corresponding path program 3 times [2023-11-26 11:52:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978425951] [2023-11-26 11:52:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:08,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:08,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978425951] [2023-11-26 11:52:08,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978425951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:08,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183700616] [2023-11-26 11:52:08,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:52:08,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:08,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:08,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:08,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:52:08,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:52:08,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:08,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:08,365 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-26 11:52:08,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2023-11-26 11:52:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:08,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:52:09,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183700616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:09,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-11-26 11:52:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177472299] [2023-11-26 11:52:09,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:52:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:52:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:52:10,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2023-11-26 11:52:10,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 361 flow. Second operand has 15 states, 15 states have (on average 77.26666666666667) internal successors, (1159), 15 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:10,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:10,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2023-11-26 11:52:10,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:11,963 INFO L124 PetriNetUnfolderBase]: 2083/4257 cut-off events. [2023-11-26 11:52:11,964 INFO L125 PetriNetUnfolderBase]: For 8408/8435 co-relation queries the response was YES. [2023-11-26 11:52:11,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 4257 events. 2083/4257 cut-off events. For 8408/8435 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 26047 event pairs, 1120 based on Foata normal form. 39/4037 useless extension candidates. Maximal degree in co-relation 10146. Up to 1762 conditions per place. [2023-11-26 11:52:11,983 INFO L140 encePairwiseOnDemand]: 163/170 looper letters, 0 selfloop transitions, 0 changer transitions 168/168 dead transitions. [2023-11-26 11:52:11,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 168 transitions, 852 flow [2023-11-26 11:52:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:52:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:52:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 786 transitions. [2023-11-26 11:52:11,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-11-26 11:52:11,988 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 786 transitions. [2023-11-26 11:52:11,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 786 transitions. [2023-11-26 11:52:11,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:11,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 786 transitions. [2023-11-26 11:52:11,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.33333333333333) internal successors, (786), 9 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:11,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 170.0) internal successors, (1700), 10 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:11,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 170.0) internal successors, (1700), 10 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:11,997 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 361 flow. Second operand 9 states and 786 transitions. [2023-11-26 11:52:11,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 168 transitions, 852 flow [2023-11-26 11:52:12,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 168 transitions, 835 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-26 11:52:12,037 INFO L231 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2023-11-26 11:52:12,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2023-11-26 11:52:12,038 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -10 predicate places. [2023-11-26 11:52:12,038 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2023-11-26 11:52:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 77.26666666666667) internal successors, (1159), 15 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:12,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2023-11-26 11:52:12,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2023-11-26 11:52:12,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2023-11-26 11:52:12,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2023-11-26 11:52:12,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2023-11-26 11:52:12,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2023-11-26 11:52:12,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2023-11-26 11:52:12,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (23 of 31 remaining) [2023-11-26 11:52:12,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2023-11-26 11:52:12,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2023-11-26 11:52:12,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2023-11-26 11:52:12,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (14 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2023-11-26 11:52:12,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2023-11-26 11:52:12,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2023-11-26 11:52:12,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2023-11-26 11:52:12,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2023-11-26 11:52:12,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2023-11-26 11:52:12,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2023-11-26 11:52:12,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2023-11-26 11:52:12,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2023-11-26 11:52:12,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 31 remaining) [2023-11-26 11:52:12,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2023-11-26 11:52:12,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2023-11-26 11:52:12,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2023-11-26 11:52:12,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2023-11-26 11:52:12,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:12,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:12,257 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:12,265 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:52:12,265 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:52:12,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:52:12 BasicIcfg [2023-11-26 11:52:12,270 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:52:12,270 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:52:12,270 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:52:12,271 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:52:12,271 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:37" (3/4) ... [2023-11-26 11:52:12,273 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:52:12,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2023-11-26 11:52:12,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2023-11-26 11:52:12,287 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 67 nodes and edges [2023-11-26 11:52:12,287 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-26 11:52:12,287 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:52:12,288 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:52:12,395 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:52:12,396 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:52:12,396 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:52:12,396 INFO L158 Benchmark]: Toolchain (without parser) took 38029.29ms. Allocated memory was 151.0MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 116.6MB in the beginning and 637.3MB in the end (delta: -520.8MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-26 11:52:12,397 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:12,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1477.24ms. Allocated memory is still 151.0MB. Free memory was 115.9MB in the beginning and 105.6MB in the end (delta: 10.3MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-26 11:52:12,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.13ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 101.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:52:12,399 INFO L158 Benchmark]: Boogie Preprocessor took 137.27ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 96.4MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:52:12,400 INFO L158 Benchmark]: RCFGBuilder took 1196.49ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 96.4MB in the beginning and 141.2MB in the end (delta: -44.8MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:12,400 INFO L158 Benchmark]: TraceAbstraction took 34988.29ms. Allocated memory was 182.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 140.2MB in the beginning and 642.6MB in the end (delta: -502.4MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-26 11:52:12,401 INFO L158 Benchmark]: Witness Printer took 125.39ms. Allocated memory is still 1.9GB. Free memory was 642.6MB in the beginning and 637.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:52:12,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1477.24ms. Allocated memory is still 151.0MB. Free memory was 115.9MB in the beginning and 105.6MB in the end (delta: 10.3MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.13ms. Allocated memory is still 151.0MB. Free memory was 105.6MB in the beginning and 101.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 137.27ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 96.4MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1196.49ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 96.4MB in the beginning and 141.2MB in the end (delta: -44.8MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * TraceAbstraction took 34988.29ms. Allocated memory was 182.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 140.2MB in the beginning and 642.6MB in the end (delta: -502.4MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 125.39ms. Allocated memory is still 1.9GB. Free memory was 642.6MB in the beginning and 637.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1795]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 151 locations, 31 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.8s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2275 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1696 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6430 IncrementalHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 62 mSDtfsCounter, 6430 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=405occurred in iteration=21, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 684 NumberOfCodeBlocks, 671 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 757 ConstructedInterpolants, 94 QuantifiedInterpolants, 6053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 584 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 62/96 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:52:12,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcb0bf94-4e02-4ccf-9abd-67b58d7dfbb4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE