./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI --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 ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:41:53,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:41:53,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:41:53,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:41:53,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:41:53,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:41:53,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:41:53,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:41:53,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:41:53,226 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:41:53,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:41:53,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:41:53,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:41:53,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:41:53,231 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:41:53,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:41:53,232 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:41:53,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:41:53,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:41:53,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:41:53,234 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:41:53,234 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:41:53,235 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:41:53,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:41:53,236 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:41:53,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:41:53,237 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:41:53,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:41:53,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:41:53,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:41:53,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:41:53,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:41:53,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:41:53,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:41:53,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:41:53,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:41:53,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:41:53,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:41:53,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:41:53,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:41:53,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:41:53,243 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_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd [2023-11-24 21:41:53,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:41:53,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:41:53,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:41:53,609 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:41:53,610 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:41:53,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe029_tso.i [2023-11-24 21:41:56,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:41:57,011 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:41:57,012 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/sv-benchmarks/c/pthread-wmm/safe029_tso.i [2023-11-24 21:41:57,035 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/data/570e41660/2ff2658c28384787a28baa15305e23c5/FLAGb678fffa5 [2023-11-24 21:41:57,053 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/data/570e41660/2ff2658c28384787a28baa15305e23c5 [2023-11-24 21:41:57,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:41:57,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:41:57,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:41:57,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:41:57,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:41:57,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b138943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57, skipping insertion in model container [2023-11-24 21:41:57,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:41:57,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:41:57,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:41:57,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:41:57,777 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:41:57,778 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:41:57,786 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:41:57,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57 WrapperNode [2023-11-24 21:41:57,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:41:57,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:41:57,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:41:57,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:41:57,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,857 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-24 21:41:57,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:41:57,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:41:57,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:41:57,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:41:57,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,899 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-24 21:41:57,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:41:57,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:41:57,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:41:57,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:41:57,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (1/1) ... [2023-11-24 21:41:57,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:41:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:57,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:41:57,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:41:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:41:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:41:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:41:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:41:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:41:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:41:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:41:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:41:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:41:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:41:57,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:41:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:41:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:41:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:41:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:41:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:41:58,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:41:58,002 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:41:58,145 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:41:58,148 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:41:58,330 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:41:58,437 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:41:58,443 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:41:58,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:58 BoogieIcfgContainer [2023-11-24 21:41:58,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:41:58,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:41:58,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:41:58,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:41:58,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:41:57" (1/3) ... [2023-11-24 21:41:58,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b8e5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:58, skipping insertion in model container [2023-11-24 21:41:58,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:41:57" (2/3) ... [2023-11-24 21:41:58,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b8e5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:58, skipping insertion in model container [2023-11-24 21:41:58,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:58" (3/3) ... [2023-11-24 21:41:58,460 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-11-24 21:41:58,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:41:58,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 21:41:58,483 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:41:58,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:41:58,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 88 flow [2023-11-24 21:41:58,601 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2023-11-24 21:41:58,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:41:58,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-11-24 21:41:58,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 40 transitions, 88 flow [2023-11-24 21:41:58,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 37 transitions, 80 flow [2023-11-24 21:41:58,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:41:58,629 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;@3eea20e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:41:58,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-24 21:41:58,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:41:58,634 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:41:58,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:41:58,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:58,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:41:58,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:41:58,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash 6751, now seen corresponding path program 1 times [2023-11-24 21:41:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404800783] [2023-11-24 21:41:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:58,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404800783] [2023-11-24 21:41:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404800783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:58,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:58,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807351554] [2023-11-24 21:41:58,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:58,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:58,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:58,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 40 [2023-11-24 21:41:58,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:58,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:58,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 40 [2023-11-24 21:41:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:59,034 INFO L124 PetriNetUnfolderBase]: 23/103 cut-off events. [2023-11-24 21:41:59,034 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:41:59,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 103 events. 23/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 418 event pairs, 19 based on Foata normal form. 8/100 useless extension candidates. Maximal degree in co-relation 153. Up to 45 conditions per place. [2023-11-24 21:41:59,037 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 12 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-24 21:41:59,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 104 flow [2023-11-24 21:41:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-24 21:41:59,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-24 21:41:59,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:59,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,065 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 80 flow. Second operand 3 states and 86 transitions. [2023-11-24 21:41:59,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 104 flow [2023-11-24 21:41:59,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:59,071 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 74 flow [2023-11-24 21:41:59,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-11-24 21:41:59,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-11-24 21:41:59,077 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 74 flow [2023-11-24 21:41:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:41:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:41:59,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:41:59,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 6752, now seen corresponding path program 1 times [2023-11-24 21:41:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:59,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258762015] [2023-11-24 21:41:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:59,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258762015] [2023-11-24 21:41:59,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258762015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:59,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:59,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:59,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576104762] [2023-11-24 21:41:59,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:59,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:59,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:59,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 40 [2023-11-24 21:41:59,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:59,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 40 [2023-11-24 21:41:59,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:59,371 INFO L124 PetriNetUnfolderBase]: 23/102 cut-off events. [2023-11-24 21:41:59,372 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:41:59,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 102 events. 23/102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 418 event pairs, 19 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 157. Up to 44 conditions per place. [2023-11-24 21:41:59,376 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 11 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-11-24 21:41:59,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 102 flow [2023-11-24 21:41:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-24 21:41:59,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-24 21:41:59,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:59,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,388 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 74 flow. Second operand 3 states and 86 transitions. [2023-11-24 21:41:59,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 102 flow [2023-11-24 21:41:59,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:59,394 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 72 flow [2023-11-24 21:41:59,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-24 21:41:59,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-24 21:41:59,399 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 72 flow [2023-11-24 21:41:59,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:59,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:59,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:41:59,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:41:59,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 201282108, now seen corresponding path program 1 times [2023-11-24 21:41:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370727989] [2023-11-24 21:41:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:59,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:59,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:59,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370727989] [2023-11-24 21:41:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370727989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:59,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:59,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:59,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534563740] [2023-11-24 21:41:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:59,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:59,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 40 [2023-11-24 21:41:59,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:59,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 40 [2023-11-24 21:41:59,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:59,703 INFO L124 PetriNetUnfolderBase]: 24/101 cut-off events. [2023-11-24 21:41:59,703 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:41:59,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 101 events. 24/101 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 413 event pairs, 10 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 159. Up to 44 conditions per place. [2023-11-24 21:41:59,706 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 12 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-24 21:41:59,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 102 flow [2023-11-24 21:41:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-24 21:41:59,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-24 21:41:59,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-24 21:41:59,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-24 21:41:59,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:59,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-24 21:41:59,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,716 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 72 flow. Second operand 3 states and 84 transitions. [2023-11-24 21:41:59,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 102 flow [2023-11-24 21:41:59,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:59,720 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 70 flow [2023-11-24 21:41:59,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-24 21:41:59,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2023-11-24 21:41:59,722 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 70 flow [2023-11-24 21:41:59,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:59,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:59,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:41:59,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:41:59,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 201282109, now seen corresponding path program 1 times [2023-11-24 21:41:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116218867] [2023-11-24 21:41:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116218867] [2023-11-24 21:41:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116218867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025752770] [2023-11-24 21:41:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:59,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:59,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 40 [2023-11-24 21:41:59,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:59,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 40 [2023-11-24 21:41:59,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:59,871 INFO L124 PetriNetUnfolderBase]: 23/98 cut-off events. [2023-11-24 21:41:59,872 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-24 21:41:59,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 98 events. 23/98 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 event pairs, 10 based on Foata normal form. 2/94 useless extension candidates. Maximal degree in co-relation 155. Up to 41 conditions per place. [2023-11-24 21:41:59,874 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 11 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 21:41:59,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 98 flow [2023-11-24 21:41:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2023-11-24 21:41:59,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-24 21:41:59,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:59,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 86 transitions. [2023-11-24 21:41:59,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,879 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 70 flow. Second operand 3 states and 86 transitions. [2023-11-24 21:41:59,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 98 flow [2023-11-24 21:41:59,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:59,880 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 68 flow [2023-11-24 21:41:59,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-11-24 21:41:59,882 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-24 21:41:59,882 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 68 flow [2023-11-24 21:41:59,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:59,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:59,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:59,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:41:59,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:41:59,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash -634279980, now seen corresponding path program 1 times [2023-11-24 21:41:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:59,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384772205] [2023-11-24 21:41:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:00,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384772205] [2023-11-24 21:42:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384772205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:00,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:00,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:42:00,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783799936] [2023-11-24 21:42:00,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:42:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:42:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:42:00,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-24 21:42:00,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:42:00,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-24 21:42:00,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:42:00,315 INFO L124 PetriNetUnfolderBase]: 23/94 cut-off events. [2023-11-24 21:42:00,316 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-24 21:42:00,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 94 events. 23/94 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 369 event pairs, 8 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 151. Up to 41 conditions per place. [2023-11-24 21:42:00,317 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 10 selfloop transitions, 2 changer transitions 3/32 dead transitions. [2023-11-24 21:42:00,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 102 flow [2023-11-24 21:42:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:42:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:42:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2023-11-24 21:42:00,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63 [2023-11-24 21:42:00,319 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 126 transitions. [2023-11-24 21:42:00,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 126 transitions. [2023-11-24 21:42:00,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:42:00,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 126 transitions. [2023-11-24 21:42:00,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,322 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 68 flow. Second operand 5 states and 126 transitions. [2023-11-24 21:42:00,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 102 flow [2023-11-24 21:42:00,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:42:00,324 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 64 flow [2023-11-24 21:42:00,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-11-24 21:42:00,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2023-11-24 21:42:00,325 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 64 flow [2023-11-24 21:42:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:42:00,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:00,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:42:00,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:42:00,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash -634278737, now seen corresponding path program 1 times [2023-11-24 21:42:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:00,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467823362] [2023-11-24 21:42:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:00,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:00,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:00,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467823362] [2023-11-24 21:42:00,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467823362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:00,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:00,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:42:00,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392999863] [2023-11-24 21:42:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:42:00,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:42:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:42:00,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-24 21:42:00,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:42:00,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-24 21:42:00,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:42:00,806 INFO L124 PetriNetUnfolderBase]: 260/561 cut-off events. [2023-11-24 21:42:00,807 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:42:00,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 561 events. 260/561 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3240 event pairs, 67 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 1033. Up to 182 conditions per place. [2023-11-24 21:42:00,814 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 22 selfloop transitions, 5 changer transitions 43/82 dead transitions. [2023-11-24 21:42:00,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 82 transitions, 316 flow [2023-11-24 21:42:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:42:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:42:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2023-11-24 21:42:00,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2023-11-24 21:42:00,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 243 transitions. [2023-11-24 21:42:00,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 243 transitions. [2023-11-24 21:42:00,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:42:00,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 243 transitions. [2023-11-24 21:42:00,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,823 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,823 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 64 flow. Second operand 9 states and 243 transitions. [2023-11-24 21:42:00,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 82 transitions, 316 flow [2023-11-24 21:42:00,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 82 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:42:00,827 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 129 flow [2023-11-24 21:42:00,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-11-24 21:42:00,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-24 21:42:00,830 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 129 flow [2023-11-24 21:42:00,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:00,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:42:00,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:00,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:42:00,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:42:00,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 115581006, now seen corresponding path program 1 times [2023-11-24 21:42:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:00,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871250607] [2023-11-24 21:42:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:00,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871250607] [2023-11-24 21:42:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871250607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:01,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:42:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108586681] [2023-11-24 21:42:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:01,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 40 [2023-11-24 21:42:01,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:01,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:42:01,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 40 [2023-11-24 21:42:01,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:42:01,497 INFO L124 PetriNetUnfolderBase]: 352/752 cut-off events. [2023-11-24 21:42:01,497 INFO L125 PetriNetUnfolderBase]: For 1014/1018 co-relation queries the response was YES. [2023-11-24 21:42:01,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 752 events. 352/752 cut-off events. For 1014/1018 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4392 event pairs, 25 based on Foata normal form. 35/784 useless extension candidates. Maximal degree in co-relation 2087. Up to 219 conditions per place. [2023-11-24 21:42:01,504 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 35 selfloop transitions, 9 changer transitions 39/93 dead transitions. [2023-11-24 21:42:01,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 548 flow [2023-11-24 21:42:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:42:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:42:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 307 transitions. [2023-11-24 21:42:01,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2023-11-24 21:42:01,507 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 307 transitions. [2023-11-24 21:42:01,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 307 transitions. [2023-11-24 21:42:01,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:42:01,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 307 transitions. [2023-11-24 21:42:01,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 23.615384615384617) internal successors, (307), 13 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:01,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 40.0) internal successors, (560), 14 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:01,545 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 40.0) internal successors, (560), 14 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:01,545 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 129 flow. Second operand 13 states and 307 transitions. [2023-11-24 21:42:01,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 548 flow [2023-11-24 21:42:01,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 490 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-24 21:42:01,559 INFO L231 Difference]: Finished difference. Result has 61 places, 34 transitions, 166 flow [2023-11-24 21:42:01,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=166, PETRI_PLACES=61, PETRI_TRANSITIONS=34} [2023-11-24 21:42:01,561 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-11-24 21:42:01,561 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 34 transitions, 166 flow [2023-11-24 21:42:01,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:01,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:42:01,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:42:01,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:42:01,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash 665407178, now seen corresponding path program 1 times [2023-11-24 21:42:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062425426] [2023-11-24 21:42:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062425426] [2023-11-24 21:42:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062425426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:01,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:01,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:42:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251961228] [2023-11-24 21:42:01,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:01,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:42:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:42:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:42:01,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2023-11-24 21:42:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 34 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:42:01,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2023-11-24 21:42:01,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:42:01,997 INFO L124 PetriNetUnfolderBase]: 166/444 cut-off events. [2023-11-24 21:42:01,997 INFO L125 PetriNetUnfolderBase]: For 1491/1492 co-relation queries the response was YES. [2023-11-24 21:42:02,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 444 events. 166/444 cut-off events. For 1491/1492 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2616 event pairs, 28 based on Foata normal form. 15/450 useless extension candidates. Maximal degree in co-relation 1406. Up to 196 conditions per place. [2023-11-24 21:42:02,002 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 26 selfloop transitions, 9 changer transitions 24/71 dead transitions. [2023-11-24 21:42:02,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 513 flow [2023-11-24 21:42:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:42:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:42:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2023-11-24 21:42:02,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-24 21:42:02,005 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 250 transitions. [2023-11-24 21:42:02,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 250 transitions. [2023-11-24 21:42:02,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:42:02,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 250 transitions. [2023-11-24 21:42:02,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,008 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,008 INFO L175 Difference]: Start difference. First operand has 61 places, 34 transitions, 166 flow. Second operand 10 states and 250 transitions. [2023-11-24 21:42:02,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 513 flow [2023-11-24 21:42:02,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 443 flow, removed 35 selfloop flow, removed 8 redundant places. [2023-11-24 21:42:02,015 INFO L231 Difference]: Finished difference. Result has 61 places, 35 transitions, 187 flow [2023-11-24 21:42:02,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=61, PETRI_TRANSITIONS=35} [2023-11-24 21:42:02,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-11-24 21:42:02,016 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 35 transitions, 187 flow [2023-11-24 21:42:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:42:02,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:02,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:42:02,017 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:42:02,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1425420977, now seen corresponding path program 1 times [2023-11-24 21:42:02,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:02,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147170783] [2023-11-24 21:42:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:02,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147170783] [2023-11-24 21:42:02,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147170783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:02,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:42:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965160764] [2023-11-24 21:42:02,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:02,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:42:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:42:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:42:02,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-24 21:42:02,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 35 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:42:02,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-24 21:42:02,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:42:02,244 INFO L124 PetriNetUnfolderBase]: 127/343 cut-off events. [2023-11-24 21:42:02,244 INFO L125 PetriNetUnfolderBase]: For 354/360 co-relation queries the response was YES. [2023-11-24 21:42:02,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 343 events. 127/343 cut-off events. For 354/360 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1715 event pairs, 32 based on Foata normal form. 25/347 useless extension candidates. Maximal degree in co-relation 805. Up to 149 conditions per place. [2023-11-24 21:42:02,248 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 16 selfloop transitions, 4 changer transitions 7/45 dead transitions. [2023-11-24 21:42:02,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 256 flow [2023-11-24 21:42:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:42:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:42:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-24 21:42:02,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.70625 [2023-11-24 21:42:02,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-24 21:42:02,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-24 21:42:02,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:42:02,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-24 21:42:02,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,253 INFO L175 Difference]: Start difference. First operand has 61 places, 35 transitions, 187 flow. Second operand 4 states and 113 transitions. [2023-11-24 21:42:02,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 256 flow [2023-11-24 21:42:02,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 210 flow, removed 14 selfloop flow, removed 12 redundant places. [2023-11-24 21:42:02,260 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 139 flow [2023-11-24 21:42:02,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-11-24 21:42:02,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-24 21:42:02,262 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 139 flow [2023-11-24 21:42:02,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:42:02,264 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] [2023-11-24 21:42:02,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:42:02,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:42:02,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash -271500386, now seen corresponding path program 1 times [2023-11-24 21:42:02,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:02,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732405264] [2023-11-24 21:42:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:02,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732405264] [2023-11-24 21:42:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732405264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:02,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:42:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132702411] [2023-11-24 21:42:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:02,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:42:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:42:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:42:02,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2023-11-24 21:42:02,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:42:02,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2023-11-24 21:42:02,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:42:02,537 INFO L124 PetriNetUnfolderBase]: 64/161 cut-off events. [2023-11-24 21:42:02,538 INFO L125 PetriNetUnfolderBase]: For 82/115 co-relation queries the response was YES. [2023-11-24 21:42:02,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 161 events. 64/161 cut-off events. For 82/115 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 594 event pairs, 4 based on Foata normal form. 20/169 useless extension candidates. Maximal degree in co-relation 423. Up to 56 conditions per place. [2023-11-24 21:42:02,539 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-11-24 21:42:02,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 195 flow [2023-11-24 21:42:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:42:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:42:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2023-11-24 21:42:02,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67 [2023-11-24 21:42:02,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 134 transitions. [2023-11-24 21:42:02,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 134 transitions. [2023-11-24 21:42:02,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:42:02,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 134 transitions. [2023-11-24 21:42:02,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,543 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,543 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 139 flow. Second operand 5 states and 134 transitions. [2023-11-24 21:42:02,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 195 flow [2023-11-24 21:42:02,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 177 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-24 21:42:02,545 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-11-24 21:42:02,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-11-24 21:42:02,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-24 21:42:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-11-24 21:42:02,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:02,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-24 21:42:02,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-24 21:42:02,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-24 21:42:02,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-24 21:42:02,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-24 21:42:02,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-24 21:42:02,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-24 21:42:02,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-24 21:42:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:42:02,557 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:02,562 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:42:02,562 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:42:02,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:42:02 BasicIcfg [2023-11-24 21:42:02,569 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:42:02,570 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:42:02,570 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:42:02,570 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:42:02,571 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:58" (3/4) ... [2023-11-24 21:42:02,573 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:42:02,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:42:02,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:42:02,585 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-24 21:42:02,585 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-24 21:42:02,585 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:42:02,585 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:42:02,670 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:42:02,671 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:42:02,671 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:42:02,672 INFO L158 Benchmark]: Toolchain (without parser) took 5607.39ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 157.1MB in the beginning and 178.0MB in the end (delta: -20.9MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2023-11-24 21:42:02,672 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 27.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:42:02,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.38ms. Allocated memory is still 190.8MB. Free memory was 157.1MB in the beginning and 135.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:42:02,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.64ms. Allocated memory is still 190.8MB. Free memory was 135.2MB in the beginning and 134.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:42:02,674 INFO L158 Benchmark]: Boogie Preprocessor took 55.17ms. Allocated memory is still 190.8MB. Free memory was 134.1MB in the beginning and 131.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:42:02,674 INFO L158 Benchmark]: RCFGBuilder took 530.84ms. Allocated memory is still 190.8MB. Free memory was 131.0MB in the beginning and 111.9MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:42:02,675 INFO L158 Benchmark]: TraceAbstraction took 4120.67ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 111.0MB in the beginning and 182.2MB in the end (delta: -71.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:42:02,675 INFO L158 Benchmark]: Witness Printer took 101.28ms. Allocated memory is still 234.9MB. Free memory was 182.2MB in the beginning and 178.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:42:02,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory was 69.8MB in the beginning and 69.8MB in the end (delta: 27.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.38ms. Allocated memory is still 190.8MB. Free memory was 157.1MB in the beginning and 135.2MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.64ms. Allocated memory is still 190.8MB. Free memory was 135.2MB in the beginning and 134.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.17ms. Allocated memory is still 190.8MB. Free memory was 134.1MB in the beginning and 131.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 530.84ms. Allocated memory is still 190.8MB. Free memory was 131.0MB in the beginning and 111.9MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4120.67ms. Allocated memory was 190.8MB in the beginning and 234.9MB in the end (delta: 44.0MB). Free memory was 111.0MB in the beginning and 182.2MB in the end (delta: -71.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 101.28ms. Allocated memory is still 234.9MB. Free memory was 182.2MB in the beginning and 178.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 754]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: 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, 55 locations, 8 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: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 232 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 548 IncrementalHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 68 mSDtfsCounter, 548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred in iteration=8, InterpolantAutomatonStates: 58, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 589 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:42:02,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_383cea32-7ca1-49ef-ab36-47c8cf4bfd5b/bin/uautomizer-verify-NlZe1sFDwI/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