./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu --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 245f8deca690daafc67ff44dd7680fe4934c4e890117db34905ca3a31fc7577b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:07,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:07,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:36:07,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:07,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:07,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:07,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:07,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:07,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:07,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:07,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:07,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:07,888 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:07,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:07,890 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:07,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:07,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:07,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:07,892 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:36:07,893 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:36:07,893 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:36:07,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:07,894 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:36:07,896 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:07,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:07,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:07,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:07,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:07,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:07,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:07,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:07,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:07,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:07,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:07,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:07,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:07,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:07,902 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:07,903 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_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 245f8deca690daafc67ff44dd7680fe4934c4e890117db34905ca3a31fc7577b [2023-11-19 07:36:08,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:08,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:08,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:08,224 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:08,225 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:08,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe025_rmo.i [2023-11-19 07:36:11,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:11,688 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:11,689 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/sv-benchmarks/c/pthread-wmm/safe025_rmo.i [2023-11-19 07:36:11,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/data/e6cf1d0c3/bf9e0c68a2734daf9a527b408fcb3561/FLAG759fbab41 [2023-11-19 07:36:11,754 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/data/e6cf1d0c3/bf9e0c68a2734daf9a527b408fcb3561 [2023-11-19 07:36:11,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:11,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:11,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:11,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:11,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:11,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:11" (1/1) ... [2023-11-19 07:36:11,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ec02a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:11, skipping insertion in model container [2023-11-19 07:36:11,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:11" (1/1) ... [2023-11-19 07:36:11,845 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:12,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:12,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:12,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:12,532 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:12,532 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:12,541 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:12,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12 WrapperNode [2023-11-19 07:36:12,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:12,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:12,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:12,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:12,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,658 INFO L138 Inliner]: procedures = 176, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-11-19 07:36:12,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:12,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:12,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:12,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:12,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:12,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:12,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:12,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:12,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (1/1) ... [2023-11-19 07:36:12,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:12,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:12,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:12,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6019ab-98db-497e-a9d1-def0d2127052/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:36:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:36:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:36:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:36:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:36:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:36:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:12,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:12,855 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:36:13,025 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:13,027 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:13,839 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:14,565 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:14,566 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:36:14,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:14 BoogieIcfgContainer [2023-11-19 07:36:14,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:14,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:14,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:14,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:14,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:11" (1/3) ... [2023-11-19 07:36:14,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a26c516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:14, skipping insertion in model container [2023-11-19 07:36:14,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:12" (2/3) ... [2023-11-19 07:36:14,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a26c516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:14, skipping insertion in model container [2023-11-19 07:36:14,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:14" (3/3) ... [2023-11-19 07:36:14,580 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_rmo.i [2023-11-19 07:36:14,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:14,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-19 07:36:14,600 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:14,762 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:36:14,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 224 transitions, 460 flow [2023-11-19 07:36:14,959 INFO L124 PetriNetUnfolderBase]: 28/221 cut-off events. [2023-11-19 07:36:14,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:14,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 221 events. 28/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 425 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 164. Up to 3 conditions per place. [2023-11-19 07:36:14,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 224 transitions, 460 flow [2023-11-19 07:36:14,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 221 transitions, 451 flow [2023-11-19 07:36:14,994 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:15,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 221 transitions, 451 flow [2023-11-19 07:36:15,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 221 transitions, 451 flow [2023-11-19 07:36:15,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 221 transitions, 451 flow [2023-11-19 07:36:15,165 INFO L124 PetriNetUnfolderBase]: 28/221 cut-off events. [2023-11-19 07:36:15,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:15,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 221 events. 28/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 418 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 164. Up to 3 conditions per place. [2023-11-19 07:36:15,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 14236 [2023-11-19 07:36:35,562 INFO L134 LiptonReduction]: Checked pairs total: 59363 [2023-11-19 07:36:35,563 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-11-19 07:36:35,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:35,587 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;@27df61c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:35,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-11-19 07:36:35,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:35,590 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:36:35,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:35,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:35,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:36:35,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-19 07:36:35,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1294, now seen corresponding path program 1 times [2023-11-19 07:36:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849726686] [2023-11-19 07:36:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849726686] [2023-11-19 07:36:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849726686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:36:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599313121] [2023-11-19 07:36:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:35,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:35,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:35,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 411 [2023-11-19 07:36:35,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 193 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:35,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:35,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 411 [2023-11-19 07:36:35,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:45,602 INFO L124 PetriNetUnfolderBase]: 34734/49051 cut-off events. [2023-11-19 07:36:45,602 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-19 07:36:45,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97395 conditions, 49051 events. 34734/49051 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 3863. Compared 349330 event pairs, 34734 based on Foata normal form. 2106/21401 useless extension candidates. Maximal degree in co-relation 97384. Up to 48170 conditions per place. [2023-11-19 07:36:45,975 INFO L140 encePairwiseOnDemand]: 372/411 looper letters, 49 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2023-11-19 07:36:45,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 211 flow [2023-11-19 07:36:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:36:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 348 transitions. [2023-11-19 07:36:46,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233576642335766 [2023-11-19 07:36:46,003 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 348 transitions. [2023-11-19 07:36:46,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 348 transitions. [2023-11-19 07:36:46,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:46,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 348 transitions. [2023-11-19 07:36:46,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.0) internal successors, (348), 2 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,025 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,028 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 193 flow. Second operand 2 states and 348 transitions. [2023-11-19 07:36:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 211 flow [2023-11-19 07:36:46,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:46,040 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 110 flow [2023-11-19 07:36:46,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-19 07:36:46,047 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -39 predicate places. [2023-11-19 07:36:46,047 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 110 flow [2023-11-19 07:36:46,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:46,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:36:46,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:46,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-19 07:36:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:46,061 INFO L85 PathProgramCache]: Analyzing trace with hash 39649573, now seen corresponding path program 1 times [2023-11-19 07:36:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:46,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104638991] [2023-11-19 07:36:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:46,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104638991] [2023-11-19 07:36:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104638991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807334308] [2023-11-19 07:36:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:46,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:46,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:46,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:46,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:46,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 411 [2023-11-19 07:36:46,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:46,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 411 [2023-11-19 07:36:46,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:52,027 INFO L124 PetriNetUnfolderBase]: 20995/30743 cut-off events. [2023-11-19 07:36:52,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:52,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61174 conditions, 30743 events. 20995/30743 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 214472 event pairs, 13439 based on Foata normal form. 0/16222 useless extension candidates. Maximal degree in co-relation 61171. Up to 19267 conditions per place. [2023-11-19 07:36:52,215 INFO L140 encePairwiseOnDemand]: 389/411 looper letters, 57 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2023-11-19 07:36:52,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 282 flow [2023-11-19 07:36:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-19 07:36:52,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706407137064071 [2023-11-19 07:36:52,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-19 07:36:52,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-19 07:36:52,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:52,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-19 07:36:52,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,228 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 110 flow. Second operand 3 states and 457 transitions. [2023-11-19 07:36:52,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 282 flow [2023-11-19 07:36:52,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:52,231 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 200 flow [2023-11-19 07:36:52,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-11-19 07:36:52,232 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -38 predicate places. [2023-11-19 07:36:52,233 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 200 flow [2023-11-19 07:36:52,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:52,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:36:52,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:52,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-19 07:36:52,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 39649574, now seen corresponding path program 1 times [2023-11-19 07:36:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:52,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749203376] [2023-11-19 07:36:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:52,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749203376] [2023-11-19 07:36:52,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749203376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:52,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:52,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:52,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787014800] [2023-11-19 07:36:52,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:52,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:52,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:52,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:52,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 411 [2023-11-19 07:36:52,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:52,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 411 [2023-11-19 07:36:52,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:54,661 INFO L124 PetriNetUnfolderBase]: 5609/8790 cut-off events. [2023-11-19 07:36:54,661 INFO L125 PetriNetUnfolderBase]: For 2794/2794 co-relation queries the response was YES. [2023-11-19 07:36:54,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24570 conditions, 8790 events. 5609/8790 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 56652 event pairs, 4085 based on Foata normal form. 2649/10205 useless extension candidates. Maximal degree in co-relation 24565. Up to 8097 conditions per place. [2023-11-19 07:36:54,724 INFO L140 encePairwiseOnDemand]: 399/411 looper letters, 41 selfloop transitions, 1 changer transitions 1/47 dead transitions. [2023-11-19 07:36:54,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 264 flow [2023-11-19 07:36:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:36:54,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35117599351175993 [2023-11-19 07:36:54,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:36:54,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:36:54,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:54,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:36:54,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,737 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 200 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:36:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 264 flow [2023-11-19 07:36:54,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:54,766 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 156 flow [2023-11-19 07:36:54,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-19 07:36:54,768 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -49 predicate places. [2023-11-19 07:36:54,768 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 156 flow [2023-11-19 07:36:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:54,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:54,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-19 07:36:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash 823195465, now seen corresponding path program 1 times [2023-11-19 07:36:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367520543] [2023-11-19 07:36:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:55,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:55,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367520543] [2023-11-19 07:36:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367520543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371969174] [2023-11-19 07:36:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:55,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:55,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 411 [2023-11-19 07:36:55,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 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) [2023-11-19 07:36:55,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:55,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 411 [2023-11-19 07:36:55,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:57,095 INFO L124 PetriNetUnfolderBase]: 5272/8373 cut-off events. [2023-11-19 07:36:57,095 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2023-11-19 07:36:57,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21665 conditions, 8373 events. 5272/8373 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 54863 event pairs, 1839 based on Foata normal form. 0/6267 useless extension candidates. Maximal degree in co-relation 21660. Up to 5946 conditions per place. [2023-11-19 07:36:57,143 INFO L140 encePairwiseOnDemand]: 406/411 looper letters, 63 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-11-19 07:36:57,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 372 flow [2023-11-19 07:36:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-11-19 07:36:57,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609083536090835 [2023-11-19 07:36:57,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-11-19 07:36:57,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-11-19 07:36:57,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:57,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-11-19 07:36:57,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,154 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 156 flow. Second operand 3 states and 445 transitions. [2023-11-19 07:36:57,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 372 flow [2023-11-19 07:36:57,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:57,158 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 170 flow [2023-11-19 07:36:57,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-19 07:36:57,159 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -48 predicate places. [2023-11-19 07:36:57,160 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 170 flow [2023-11-19 07:36:57,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 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) [2023-11-19 07:36:57,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:57,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:57,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:57,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-19 07:36:57,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash -250745404, now seen corresponding path program 1 times [2023-11-19 07:36:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759185836] [2023-11-19 07:36:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat