./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e1655ef15816414a510c3a8c6c5388872fb389e863c7015deef825935bc10ec6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:43:15,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:43:15,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:43:15,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:43:15,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:43:15,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:43:15,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:43:15,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:43:15,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:43:15,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:43:15,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:43:15,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:43:15,964 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:43:15,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:43:15,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:43:15,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:43:15,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:43:15,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:43:15,969 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:43:15,969 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:43:15,970 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:43:15,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:43:15,971 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:43:15,971 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:43:15,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:43:15,972 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:43:15,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:43:15,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:43:15,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:43:15,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:15,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:43:15,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:43:15,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:43:15,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:43:15,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:43:15,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:43:15,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:43:15,978 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:43:15,978 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_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1655ef15816414a510c3a8c6c5388872fb389e863c7015deef825935bc10ec6 [2023-11-06 22:43:16,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:43:16,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:43:16,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:43:16,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:43:16,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:43:16,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/thin002_power.opt.i [2023-11-06 22:43:19,795 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:43:20,114 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:43:20,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/sv-benchmarks/c/pthread-wmm/thin002_power.opt.i [2023-11-06 22:43:20,142 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/data/2323d1cf0/495180ae3aae4f9f85e674136d1f3856/FLAGbfe45f5fa [2023-11-06 22:43:20,167 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/data/2323d1cf0/495180ae3aae4f9f85e674136d1f3856 [2023-11-06 22:43:20,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:43:20,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:43:20,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:20,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:43:20,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:43:20,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:20,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628eaacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20, skipping insertion in model container [2023-11-06 22:43:20,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:20,240 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:43:20,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:20,759 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:43:20,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:43:20,957 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:43:20,957 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:43:20,967 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:43:20,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20 WrapperNode [2023-11-06 22:43:20,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:43:20,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:20,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:43:20,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:43:20,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,095 INFO L138 Inliner]: procedures = 177, calls = 85, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 205 [2023-11-06 22:43:21,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:43:21,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:43:21,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:43:21,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:43:21,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:43:21,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:43:21,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:43:21,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:43:21,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (1/1) ... [2023-11-06 22:43:21,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:43:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:21,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:43:21,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_327ffe64-f9ba-4d5a-8309-9a36f1dd33e7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:43:21,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:43:21,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:43:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:43:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:43:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:43:21,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:43:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:43:21,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:43:21,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:43:21,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:43:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:43:21,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:43:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:43:21,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:43:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:43:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:43:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:43:21,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:43:21,309 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:43:21,530 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:43:21,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:43:22,262 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:43:23,453 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:43:23,454 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:43:23,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:23 BoogieIcfgContainer [2023-11-06 22:43:23,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:43:23,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:43:23,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:43:23,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:43:23,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:20" (1/3) ... [2023-11-06 22:43:23,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d04fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:23, skipping insertion in model container [2023-11-06 22:43:23,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:20" (2/3) ... [2023-11-06 22:43:23,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d04fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:23, skipping insertion in model container [2023-11-06 22:43:23,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:23" (3/3) ... [2023-11-06 22:43:23,477 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.opt.i [2023-11-06 22:43:23,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:43:23,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2023-11-06 22:43:23,502 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:43:23,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:43:23,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 199 transitions, 414 flow [2023-11-06 22:43:23,933 INFO L124 PetriNetUnfolderBase]: 3/195 cut-off events. [2023-11-06 22:43:23,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:43:23,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 195 events. 3/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 264 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-11-06 22:43:23,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 199 transitions, 414 flow [2023-11-06 22:43:23,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 195 transitions, 402 flow [2023-11-06 22:43:23,962 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:43:23,980 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 195 transitions, 402 flow [2023-11-06 22:43:23,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 195 transitions, 402 flow [2023-11-06 22:43:23,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 195 transitions, 402 flow [2023-11-06 22:43:24,077 INFO L124 PetriNetUnfolderBase]: 3/195 cut-off events. [2023-11-06 22:43:24,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:43:24,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 195 events. 3/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 259 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-11-06 22:43:24,088 INFO L119 LiptonReduction]: Number of co-enabled transitions 7410 [2023-11-06 22:43:30,596 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 215 DAG size of output: 214 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:43:51,460 INFO L134 LiptonReduction]: Checked pairs total: 32509 [2023-11-06 22:43:51,460 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-11-06 22:43:51,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:43:51,481 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;@68434448, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:43:51,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-11-06 22:43:51,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:43:51,484 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:43:51,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:43:51,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:51,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:43:51,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-06 22:43:51,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1256, now seen corresponding path program 1 times [2023-11-06 22:43:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925718776] [2023-11-06 22:43:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:51,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925718776] [2023-11-06 22:43:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925718776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:51,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:43:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117192812] [2023-11-06 22:43:51,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:51,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:43:51,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:43:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:43:51,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 373 [2023-11-06 22:43:51,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:51,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:51,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 373 [2023-11-06 22:43:51,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:02,097 INFO L124 PetriNetUnfolderBase]: 47471/63182 cut-off events. [2023-11-06 22:44:02,097 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-06 22:44:02,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126370 conditions, 63182 events. 47471/63182 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 3770. Compared 410019 event pairs, 47471 based on Foata normal form. 900/38590 useless extension candidates. Maximal degree in co-relation 126358. Up to 62977 conditions per place. [2023-11-06 22:44:02,659 INFO L140 encePairwiseOnDemand]: 350/373 looper letters, 46 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-11-06 22:44:02,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 204 flow [2023-11-06 22:44:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:44:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-11-06 22:44:02,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053619302949062 [2023-11-06 22:44:02,686 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-11-06 22:44:02,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-11-06 22:44:02,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:02,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-11-06 22:44:02,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:02,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:02,715 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:02,717 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 158 flow. Second operand 2 states and 377 transitions. [2023-11-06 22:44:02,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 204 flow [2023-11-06 22:44:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:44:02,730 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 108 flow [2023-11-06 22:44:02,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-06 22:44:02,741 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -25 predicate places. [2023-11-06 22:44:02,742 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 108 flow [2023-11-06 22:44:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:02,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:02,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:02,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:02,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-06 22:44:02,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:02,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1756978140, now seen corresponding path program 1 times [2023-11-06 22:44:02,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:02,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807187252] [2023-11-06 22:44:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:02,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:03,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807187252] [2023-11-06 22:44:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807187252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:03,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:44:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237333305] [2023-11-06 22:44:03,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:03,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:03,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 373 [2023-11-06 22:44:03,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:03,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:03,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 373 [2023-11-06 22:44:03,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:11,952 INFO L124 PetriNetUnfolderBase]: 42572/56591 cut-off events. [2023-11-06 22:44:11,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:12,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113311 conditions, 56591 events. 42572/56591 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3373. Compared 383362 event pairs, 8279 based on Foata normal form. 0/34753 useless extension candidates. Maximal degree in co-relation 113308. Up to 45130 conditions per place. [2023-11-06 22:44:12,660 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 74 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-06 22:44:12,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 322 flow [2023-11-06 22:44:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:44:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-06 22:44:12,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47899910634495085 [2023-11-06 22:44:12,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-06 22:44:12,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-06 22:44:12,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:12,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-06 22:44:12,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:12,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:12,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:12,674 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 108 flow. Second operand 3 states and 536 transitions. [2023-11-06 22:44:12,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 322 flow [2023-11-06 22:44:12,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:44:12,678 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 110 flow [2023-11-06 22:44:12,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-11-06 22:44:12,679 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -24 predicate places. [2023-11-06 22:44:12,680 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 110 flow [2023-11-06 22:44:12,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:12,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:12,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:44:12,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-06 22:44:12,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1368251467, now seen corresponding path program 1 times [2023-11-06 22:44:12,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:12,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363428557] [2023-11-06 22:44:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:12,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:13,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363428557] [2023-11-06 22:44:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363428557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:13,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153749951] [2023-11-06 22:44:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:13,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:13,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 373 [2023-11-06 22:44:13,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:13,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:13,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 373 [2023-11-06 22:44:13,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand