./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/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_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/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_77b5c965-ae8f-4e77-b09b-1a7bd9318361/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 2ca99869d70e44347287c08401504e0aa96889a44ad1dcfb8d04f6de3849ab47 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:45,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:45,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:56:45,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:45,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:45,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:45,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:45,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:45,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:45,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:45,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:45,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:45,950 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:45,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:45,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:45,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:45,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:45,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:45,953 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:56:45,954 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:56:45,954 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:56:45,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:45,955 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:56:45,955 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:45,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:45,956 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:45,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:45,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:45,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:45,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:45,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:45,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:45,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:45,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:45,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:45,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:45,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:45,961 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:45,961 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_77b5c965-ae8f-4e77-b09b-1a7bd9318361/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ca99869d70e44347287c08401504e0aa96889a44ad1dcfb8d04f6de3849ab47 [2023-11-19 07:56:46,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:46,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:46,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:46,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:46,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:46,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe018_rmo.opt.i [2023-11-19 07:56:49,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:49,612 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:49,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/sv-benchmarks/c/pthread-wmm/safe018_rmo.opt.i [2023-11-19 07:56:49,644 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/data/02cc07efa/7b3db4cda0114d2ebc21b0f02fbe015e/FLAGfeb32f705 [2023-11-19 07:56:49,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/data/02cc07efa/7b3db4cda0114d2ebc21b0f02fbe015e [2023-11-19 07:56:49,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:49,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:49,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:49,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:49,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:49,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:49" (1/1) ... [2023-11-19 07:56:49,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e61d8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:49, skipping insertion in model container [2023-11-19 07:56:49,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:49" (1/1) ... [2023-11-19 07:56:49,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:50,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:50,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:50,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:50,338 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:50,339 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:50,348 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:50,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50 WrapperNode [2023-11-19 07:56:50,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:50,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:50,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:50,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:50,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,424 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2023-11-19 07:56:50,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:50,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:50,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:50,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:50,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:50,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:50,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:50,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:50,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (1/1) ... [2023-11-19 07:56:50,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:50,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:50,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:50,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b5c965-ae8f-4e77-b09b-1a7bd9318361/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:56:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:56:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:56:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:56:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:56:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:56:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:56:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:56:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:50,603 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 07:56:50,816 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:50,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:51,496 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:52,063 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:52,063 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:56:52,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:52 BoogieIcfgContainer [2023-11-19 07:56:52,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:52,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:52,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:52,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:52,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:49" (1/3) ... [2023-11-19 07:56:52,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0b727c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:52, skipping insertion in model container [2023-11-19 07:56:52,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:50" (2/3) ... [2023-11-19 07:56:52,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0b727c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:52, skipping insertion in model container [2023-11-19 07:56:52,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:52" (3/3) ... [2023-11-19 07:56:52,083 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_rmo.opt.i [2023-11-19 07:56:52,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:52,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-11-19 07:56:52,106 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:52,259 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:56:52,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 192 transitions, 396 flow [2023-11-19 07:56:52,436 INFO L124 PetriNetUnfolderBase]: 12/189 cut-off events. [2023-11-19 07:56:52,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:52,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 189 events. 12/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 283 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-19 07:56:52,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 192 transitions, 396 flow [2023-11-19 07:56:52,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 189 transitions, 387 flow [2023-11-19 07:56:52,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:52,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 189 transitions, 387 flow [2023-11-19 07:56:52,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 189 transitions, 387 flow [2023-11-19 07:56:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 189 transitions, 387 flow [2023-11-19 07:56:52,527 INFO L124 PetriNetUnfolderBase]: 12/189 cut-off events. [2023-11-19 07:56:52,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 189 events. 12/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 290 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-19 07:56:52,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 9292 [2023-11-19 07:57:04,048 INFO L134 LiptonReduction]: Checked pairs total: 43638 [2023-11-19 07:57:04,048 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-19 07:57:04,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:04,082 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;@608be5e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:04,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2023-11-19 07:57:04,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:04,089 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:57:04,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:04,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:04,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:57:04,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:04,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1069, now seen corresponding path program 1 times [2023-11-19 07:57:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204728309] [2023-11-19 07:57:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:04,269 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 07:57:04,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204728309] [2023-11-19 07:57:04,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204728309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:04,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:04,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:57:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047711018] [2023-11-19 07:57:04,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:04,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:04,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 360 [2023-11-19 07:57:04,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 161 flow. Second operand has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 07:57:04,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:04,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 360 [2023-11-19 07:57:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:10,484 INFO L124 PetriNetUnfolderBase]: 23428/32687 cut-off events. [2023-11-19 07:57:10,484 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-19 07:57:10,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65453 conditions, 32687 events. 23428/32687 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 2543. Compared 216145 event pairs, 23428 based on Foata normal form. 0/13853 useless extension candidates. Maximal degree in co-relation 65442. Up to 32628 conditions per place. [2023-11-19 07:57:10,711 INFO L140 encePairwiseOnDemand]: 332/360 looper letters, 45 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2023-11-19 07:57:10,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 191 flow [2023-11-19 07:57:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 331 transitions. [2023-11-19 07:57:10,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597222222222222 [2023-11-19 07:57:10,736 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 331 transitions. [2023-11-19 07:57:10,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 331 transitions. [2023-11-19 07:57:10,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:10,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 331 transitions. [2023-11-19 07:57:10,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 07:57:10,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 07:57:10,756 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 07:57:10,758 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 161 flow. Second operand 2 states and 331 transitions. [2023-11-19 07:57:10,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 191 flow [2023-11-19 07:57:10,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:10,768 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 98 flow [2023-11-19 07:57:10,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-19 07:57:10,774 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -30 predicate places. [2023-11-19 07:57:10,775 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 98 flow [2023-11-19 07:57:10,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 07:57:10,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:10,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:57:10,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:10,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:10,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash 32682092, now seen corresponding path program 1 times [2023-11-19 07:57:10,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:10,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709572824] [2023-11-19 07:57:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,140 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 07:57:11,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709572824] [2023-11-19 07:57:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709572824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:11,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:11,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442758236] [2023-11-19 07:57:11,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:11,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 360 [2023-11-19 07:57:11,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 98 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 07:57:11,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:11,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 360 [2023-11-19 07:57:11,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:14,135 INFO L124 PetriNetUnfolderBase]: 11451/16212 cut-off events. [2023-11-19 07:57:14,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:14,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32474 conditions, 16212 events. 11451/16212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 98571 event pairs, 6971 based on Foata normal form. 0/8272 useless extension candidates. Maximal degree in co-relation 32471. Up to 8366 conditions per place. [2023-11-19 07:57:14,258 INFO L140 encePairwiseOnDemand]: 349/360 looper letters, 57 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-19 07:57:14,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 244 flow [2023-11-19 07:57:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-19 07:57:14,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412962962962963 [2023-11-19 07:57:14,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-19 07:57:14,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-19 07:57:14,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:14,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-19 07:57:14,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 07:57:14,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:14,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:14,284 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 98 flow. Second operand 3 states and 446 transitions. [2023-11-19 07:57:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 244 flow [2023-11-19 07:57:14,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:14,288 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 114 flow [2023-11-19 07:57:14,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2023-11-19 07:57:14,291 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -29 predicate places. [2023-11-19 07:57:14,292 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 114 flow [2023-11-19 07:57:14,293 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 07:57:14,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:14,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:57:14,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:57:14,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:14,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash 32682093, now seen corresponding path program 1 times [2023-11-19 07:57:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692754836] [2023-11-19 07:57:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,565 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 07:57:14,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692754836] [2023-11-19 07:57:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692754836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207544374] [2023-11-19 07:57:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:14,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 360 [2023-11-19 07:57:14,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:14,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 360 [2023-11-19 07:57:14,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,720 INFO L124 PetriNetUnfolderBase]: 3309/4814 cut-off events. [2023-11-19 07:57:15,720 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-19 07:57:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10824 conditions, 4814 events. 3309/4814 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 24860 event pairs, 3309 based on Foata normal form. 0/4081 useless extension candidates. Maximal degree in co-relation 10819. Up to 4798 conditions per place. [2023-11-19 07:57:15,763 INFO L140 encePairwiseOnDemand]: 350/360 looper letters, 33 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-19 07:57:15,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 35 transitions, 164 flow [2023-11-19 07:57:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-19 07:57:15,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39537037037037037 [2023-11-19 07:57:15,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-19 07:57:15,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-19 07:57:15,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-19 07:57:15,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 07:57:15,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:15,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:15,778 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 114 flow. Second operand 3 states and 427 transitions. [2023-11-19 07:57:15,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 35 transitions, 164 flow [2023-11-19 07:57:15,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:15,782 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 94 flow [2023-11-19 07:57:15,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-19 07:57:15,784 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -38 predicate places. [2023-11-19 07:57:15,785 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 94 flow [2023-11-19 07:57:15,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:15,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:57:15,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:15,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2093185308, now seen corresponding path program 1 times [2023-11-19 07:57:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105918311] [2023-11-19 07:57:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,970 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 07:57:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105918311] [2023-11-19 07:57:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105918311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221458418] [2023-11-19 07:57:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:15,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:15,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 360 [2023-11-19 07:57:15,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:15,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 360 [2023-11-19 07:57:15,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:16,970 INFO L124 PetriNetUnfolderBase]: 3229/4906 cut-off events. [2023-11-19 07:57:16,970 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-11-19 07:57:16,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10740 conditions, 4906 events. 3229/4906 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26701 event pairs, 800 based on Foata normal form. 0/4221 useless extension candidates. Maximal degree in co-relation 10735. Up to 3530 conditions per place. [2023-11-19 07:57:16,999 INFO L140 encePairwiseOnDemand]: 356/360 looper letters, 50 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-19 07:57:17,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 243 flow [2023-11-19 07:57:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-19 07:57:17,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2023-11-19 07:57:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-19 07:57:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-19 07:57:17,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:17,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-19 07:57:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 07:57:17,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:17,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:17,013 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 94 flow. Second operand 3 states and 438 transitions. [2023-11-19 07:57:17,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 243 flow [2023-11-19 07:57:17,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:17,016 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 103 flow [2023-11-19 07:57:17,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-11-19 07:57:17,018 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -36 predicate places. [2023-11-19 07:57:17,018 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 103 flow [2023-11-19 07:57:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:17,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:17,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:17,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2093185566, now seen corresponding path program 1 times [2023-11-19 07:57:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152019489] [2023-11-19 07:57:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,264 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 07:57:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152019489] [2023-11-19 07:57:17,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152019489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:17,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:17,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039770892] [2023-11-19 07:57:17,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:17,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:17,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:17,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 360 [2023-11-19 07:57:17,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:17,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:17,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 360 [2023-11-19 07:57:17,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:18,278 INFO L124 PetriNetUnfolderBase]: 3189/4634 cut-off events. [2023-11-19 07:57:18,278 INFO L125 PetriNetUnfolderBase]: For 719/719 co-relation queries the response was YES. [2023-11-19 07:57:18,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10942 conditions, 4634 events. 3189/4634 cut-off events. For 719/719 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 25665 event pairs, 747 based on Foata normal form. 0/4009 useless extension candidates. Maximal degree in co-relation 10936. Up to 3904 conditions per place. [2023-11-19 07:57:18,314 INFO L140 encePairwiseOnDemand]: 357/360 looper letters, 59 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-19 07:57:18,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 303 flow [2023-11-19 07:57:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-19 07:57:18,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101851851851852 [2023-11-19 07:57:18,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-19 07:57:18,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-19 07:57:18,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:18,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-19 07:57:18,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 07:57:18,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:18,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:18,329 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 103 flow. Second operand 3 states and 443 transitions. [2023-11-19 07:57:18,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 303 flow [2023-11-19 07:57:18,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:18,334 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 107 flow [2023-11-19 07:57:18,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-19 07:57:18,336 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -35 predicate places. [2023-11-19 07:57:18,336 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 107 flow [2023-11-19 07:57:18,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:18,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:18,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:18,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:18,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:18,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 464240993, now seen corresponding path program 1 times [2023-11-19 07:57:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140170172] [2023-11-19 07:57:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:18,646 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 07:57:18,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:18,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140170172] [2023-11-19 07:57:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140170172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:18,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:18,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:18,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635657293] [2023-11-19 07:57:18,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:18,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:18,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:18,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 360 [2023-11-19 07:57:18,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 07:57:18,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:18,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 360 [2023-11-19 07:57:18,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:20,338 INFO L124 PetriNetUnfolderBase]: 5395/7836 cut-off events. [2023-11-19 07:57:20,338 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-11-19 07:57:20,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18709 conditions, 7836 events. 5395/7836 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 42797 event pairs, 1281 based on Foata normal form. 60/6884 useless extension candidates. Maximal degree in co-relation 18702. Up to 3181 conditions per place. [2023-11-19 07:57:20,400 INFO L140 encePairwiseOnDemand]: 356/360 looper letters, 73 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-11-19 07:57:20,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 374 flow [2023-11-19 07:57:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-11-19 07:57:20,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013888888888889 [2023-11-19 07:57:20,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-11-19 07:57:20,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-11-19 07:57:20,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:20,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-11-19 07:57:20,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 07:57:20,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 360.0) internal successors, (1800), 5 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 07:57:20,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 360.0) internal successors, (1800), 5 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 07:57:20,417 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 107 flow. Second operand 4 states and 578 transitions. [2023-11-19 07:57:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 374 flow [2023-11-19 07:57:20,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:20,422 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 122 flow [2023-11-19 07:57:20,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-11-19 07:57:20,423 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-11-19 07:57:20,424 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 122 flow [2023-11-19 07:57:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 07:57:20,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:20,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:20,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:20,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:20,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:20,427 INFO L85 PathProgramCache]: Analyzing trace with hash 461062119, now seen corresponding path program 1 times [2023-11-19 07:57:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:20,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42737261] [2023-11-19 07:57:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:20,622 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 07:57:20,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42737261] [2023-11-19 07:57:20,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42737261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:20,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:20,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:20,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570531638] [2023-11-19 07:57:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:20,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 360 [2023-11-19 07:57:20,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 07:57:20,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:20,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 360 [2023-11-19 07:57:20,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:22,517 INFO L124 PetriNetUnfolderBase]: 5703/8700 cut-off events. [2023-11-19 07:57:22,518 INFO L125 PetriNetUnfolderBase]: For 1902/1902 co-relation queries the response was YES. [2023-11-19 07:57:22,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20971 conditions, 8700 events. 5703/8700 cut-off events. For 1902/1902 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 53826 event pairs, 2746 based on Foata normal form. 584/8259 useless extension candidates. Maximal degree in co-relation 20962. Up to 5747 conditions per place. [2023-11-19 07:57:22,578 INFO L140 encePairwiseOnDemand]: 348/360 looper letters, 45 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-11-19 07:57:22,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 258 flow [2023-11-19 07:57:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-19 07:57:22,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39537037037037037 [2023-11-19 07:57:22,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-19 07:57:22,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-19 07:57:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:22,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-19 07:57:22,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 07:57:22,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:22,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:22,592 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 122 flow. Second operand 3 states and 427 transitions. [2023-11-19 07:57:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 258 flow [2023-11-19 07:57:22,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:22,611 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 158 flow [2023-11-19 07:57:22,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-19 07:57:22,612 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-11-19 07:57:22,612 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 158 flow [2023-11-19 07:57:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 07:57:22,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:22,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:57:22,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:22,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash 464240860, now seen corresponding path program 1 times [2023-11-19 07:57:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492416006] [2023-11-19 07:57:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,929 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 07:57:22,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492416006] [2023-11-19 07:57:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492416006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:22,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983475644] [2023-11-19 07:57:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:22,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 360 [2023-11-19 07:57:22,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 07:57:22,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:22,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 360 [2023-11-19 07:57:22,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:24,160 INFO L124 PetriNetUnfolderBase]: 5520/8433 cut-off events. [2023-11-19 07:57:24,160 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2023-11-19 07:57:24,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24088 conditions, 8433 events. 5520/8433 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 51273 event pairs, 2090 based on Foata normal form. 84/7492 useless extension candidates. Maximal degree in co-relation 24078. Up to 7112 conditions per place. [2023-11-19 07:57:24,216 INFO L140 encePairwiseOnDemand]: 357/360 looper letters, 51 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-19 07:57:24,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 317 flow [2023-11-19 07:57:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-11-19 07:57:24,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2023-11-19 07:57:24,221 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-11-19 07:57:24,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-11-19 07:57:24,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:24,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-11-19 07:57:24,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 07:57:24,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 360.0) internal successors, (1800), 5 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 07:57:24,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 360.0) internal successors, (1800), 5 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 07:57:24,228 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 158 flow. Second operand 4 states and 558 transitions. [2023-11-19 07:57:24,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 317 flow [2023-11-19 07:57:24,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:24,257 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 151 flow [2023-11-19 07:57:24,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-11-19 07:57:24,262 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -32 predicate places. [2023-11-19 07:57:24,262 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 151 flow [2023-11-19 07:57:24,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 07:57:24,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:24,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:24,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:57:24,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:24,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1506659438, now seen corresponding path program 1 times [2023-11-19 07:57:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729539216] [2023-11-19 07:57:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,575 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 07:57:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729539216] [2023-11-19 07:57:24,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729539216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:24,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:24,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554691626] [2023-11-19 07:57:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:24,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:24,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 360 [2023-11-19 07:57:24,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:24,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:24,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 360 [2023-11-19 07:57:24,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:25,206 INFO L124 PetriNetUnfolderBase]: 1839/3104 cut-off events. [2023-11-19 07:57:25,206 INFO L125 PetriNetUnfolderBase]: For 681/687 co-relation queries the response was YES. [2023-11-19 07:57:25,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8593 conditions, 3104 events. 1839/3104 cut-off events. For 681/687 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 18268 event pairs, 748 based on Foata normal form. 45/2777 useless extension candidates. Maximal degree in co-relation 8584. Up to 2895 conditions per place. [2023-11-19 07:57:25,228 INFO L140 encePairwiseOnDemand]: 355/360 looper letters, 49 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-19 07:57:25,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 303 flow [2023-11-19 07:57:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-19 07:57:25,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2023-11-19 07:57:25,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-19 07:57:25,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-19 07:57:25,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:25,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-19 07:57:25,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 07:57:25,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:25,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states 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 07:57:25,238 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 151 flow. Second operand 3 states and 423 transitions. [2023-11-19 07:57:25,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 303 flow [2023-11-19 07:57:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:25,242 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 174 flow [2023-11-19 07:57:25,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-19 07:57:25,243 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -31 predicate places. [2023-11-19 07:57:25,244 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 174 flow [2023-11-19 07:57:25,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:25,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:25,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:25,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:57:25,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:25,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2083590411, now seen corresponding path program 1 times [2023-11-19 07:57:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:25,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531408135] [2023-11-19 07:57:25,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:25,564 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 07:57:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:25,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531408135] [2023-11-19 07:57:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531408135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:25,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:25,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:25,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053603017] [2023-11-19 07:57:25,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:25,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:25,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:25,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 360 [2023-11-19 07:57:25,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 07:57:25,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:25,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 360 [2023-11-19 07:57:25,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:25,874 INFO L124 PetriNetUnfolderBase]: 368/740 cut-off events. [2023-11-19 07:57:25,874 INFO L125 PetriNetUnfolderBase]: For 188/189 co-relation queries the response was YES. [2023-11-19 07:57:25,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 740 events. 368/740 cut-off events. For 188/189 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3403 event pairs, 135 based on Foata normal form. 44/733 useless extension candidates. Maximal degree in co-relation 2168. Up to 419 conditions per place. [2023-11-19 07:57:25,879 INFO L140 encePairwiseOnDemand]: 355/360 looper letters, 58 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-11-19 07:57:25,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 381 flow [2023-11-19 07:57:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-11-19 07:57:25,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2023-11-19 07:57:25,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-11-19 07:57:25,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-11-19 07:57:25,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:25,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-11-19 07:57:25,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:25,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 360.0) internal successors, (1800), 5 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 07:57:25,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 360.0) internal successors, (1800), 5 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 07:57:25,893 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 174 flow. Second operand 4 states and 560 transitions. [2023-11-19 07:57:25,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 381 flow [2023-11-19 07:57:25,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:25,897 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 210 flow [2023-11-19 07:57:25,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2023-11-19 07:57:25,899 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -28 predicate places. [2023-11-19 07:57:25,899 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 210 flow [2023-11-19 07:57:25,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 07:57:25,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:25,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:25,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:57:25,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:25,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:25,901 INFO L85 PathProgramCache]: Analyzing trace with hash -369623781, now seen corresponding path program 1 times [2023-11-19 07:57:25,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:25,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456779953] [2023-11-19 07:57:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:25,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:29,496 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 07:57:29,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:29,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456779953] [2023-11-19 07:57:29,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456779953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:29,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225672934] [2023-11-19 07:57:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:29,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:29,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:29,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 360 [2023-11-19 07:57:29,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 122.42857142857143) internal successors, (857), 7 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 07:57:29,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:29,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 360 [2023-11-19 07:57:29,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:30,475 INFO L124 PetriNetUnfolderBase]: 516/1033 cut-off events. [2023-11-19 07:57:30,475 INFO L125 PetriNetUnfolderBase]: For 866/868 co-relation queries the response was YES. [2023-11-19 07:57:30,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3248 conditions, 1033 events. 516/1033 cut-off events. For 866/868 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5281 event pairs, 235 based on Foata normal form. 9/998 useless extension candidates. Maximal degree in co-relation 3237. Up to 700 conditions per place. [2023-11-19 07:57:30,480 INFO L140 encePairwiseOnDemand]: 351/360 looper letters, 74 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2023-11-19 07:57:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 587 flow [2023-11-19 07:57:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:57:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 785 transitions. [2023-11-19 07:57:30,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36342592592592593 [2023-11-19 07:57:30,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 785 transitions. [2023-11-19 07:57:30,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 785 transitions. [2023-11-19 07:57:30,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 785 transitions. [2023-11-19 07:57:30,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 07:57:30,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 360.0) internal successors, (2520), 7 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 07:57:30,496 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 360.0) internal successors, (2520), 7 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 07:57:30,497 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 210 flow. Second operand 6 states and 785 transitions. [2023-11-19 07:57:30,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 587 flow [2023-11-19 07:57:30,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 87 transitions, 549 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:30,503 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 255 flow [2023-11-19 07:57:30,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-11-19 07:57:30,504 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -24 predicate places. [2023-11-19 07:57:30,504 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 255 flow [2023-11-19 07:57:30,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.42857142857143) internal successors, (857), 7 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 07:57:30,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:30,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:57:30,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:30,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1959619325, now seen corresponding path program 1 times [2023-11-19 07:57:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976120705] [2023-11-19 07:57:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:30,831 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 07:57:30,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976120705] [2023-11-19 07:57:30,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976120705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:30,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:30,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637997030] [2023-11-19 07:57:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:30,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:30,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 360 [2023-11-19 07:57:30,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 07:57:30,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:30,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 360 [2023-11-19 07:57:30,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:31,140 INFO L124 PetriNetUnfolderBase]: 299/576 cut-off events. [2023-11-19 07:57:31,140 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2023-11-19 07:57:31,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 576 events. 299/576 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2606 event pairs, 78 based on Foata normal form. 35/604 useless extension candidates. Maximal degree in co-relation 1918. Up to 232 conditions per place. [2023-11-19 07:57:31,145 INFO L140 encePairwiseOnDemand]: 355/360 looper letters, 60 selfloop transitions, 10 changer transitions 1/72 dead transitions. [2023-11-19 07:57:31,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 461 flow [2023-11-19 07:57:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 678 transitions. [2023-11-19 07:57:31,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2023-11-19 07:57:31,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 678 transitions. [2023-11-19 07:57:31,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 678 transitions. [2023-11-19 07:57:31,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:31,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 678 transitions. [2023-11-19 07:57:31,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 07:57:31,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 360.0) internal successors, (2160), 6 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 07:57:31,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 360.0) internal successors, (2160), 6 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 07:57:31,162 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 255 flow. Second operand 5 states and 678 transitions. [2023-11-19 07:57:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 461 flow [2023-11-19 07:57:31,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 432 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-19 07:57:31,167 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 198 flow [2023-11-19 07:57:31,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-11-19 07:57:31,170 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -31 predicate places. [2023-11-19 07:57:31,171 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 198 flow [2023-11-19 07:57:31,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 07:57:31,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:31,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:31,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:57:31,173 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-11-19 07:57:31,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash -95759607, now seen corresponding path program 1 times [2023-11-19 07:57:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51336733] [2023-11-19 07:57:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat