./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl --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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:29:51,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:51,560 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:29:51,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:51,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:51,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:51,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:51,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:51,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:29:51,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:29:51,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:51,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:51,616 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:51,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:51,617 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:29:51,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:29:51,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:29:51,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:51,620 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:29:51,621 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:29:51,621 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:29:51,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:29:51,623 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:29:51,623 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:29:51,624 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:29:51,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:51,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:51,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:51,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:29:51,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:51,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:51,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:29:51,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:29:51,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:29:51,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:29:51,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:29:51,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:29:51,632 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:29:51,632 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_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-12 02:29:51,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:51,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:52,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:52,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:52,004 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:52,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-12 02:29:55,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:55,409 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:55,410 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-12 02:29:55,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/data/eddd60112/77ae9cbd03fc43e693d06731c416161d/FLAG2829b59c8 [2023-11-12 02:29:55,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/data/eddd60112/77ae9cbd03fc43e693d06731c416161d [2023-11-12 02:29:55,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:55,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:55,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:55,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:55,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:55,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c24917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55, skipping insertion in model container [2023-11-12 02:29:55,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:55,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:55,827 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:55,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:55,886 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:29:55,886 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:29:55,894 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:55,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55 WrapperNode [2023-11-12 02:29:55,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:55,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:55,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:55,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:55,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,945 INFO L138 Inliner]: procedures = 22, calls = 111, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 269 [2023-11-12 02:29:55,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:55,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:55,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:55,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:55,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:55,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:55,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:55,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:55,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:55,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (1/1) ... [2023-11-12 02:29:56,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:56,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:56,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:56,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbaff09f-fe35-4eee-bb07-9f668d17eabb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:29:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:29:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:29:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:29:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:29:56,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:29:56,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:29:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:29:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:29:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:29:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:29:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:29:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:29:56,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:29:56,095 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:29:56,254 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:56,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:56,818 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:56,958 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:56,958 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:29:56,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:56 BoogieIcfgContainer [2023-11-12 02:29:56,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:56,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:29:56,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:29:56,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:29:56,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:29:55" (1/3) ... [2023-11-12 02:29:56,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b40d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:56, skipping insertion in model container [2023-11-12 02:29:56,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:55" (2/3) ... [2023-11-12 02:29:56,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b40d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:56, skipping insertion in model container [2023-11-12 02:29:56,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:56" (3/3) ... [2023-11-12 02:29:56,975 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-12 02:29:56,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:29:56,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 02:29:56,998 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:29:57,098 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:29:57,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 180 transitions, 381 flow [2023-11-12 02:29:57,221 INFO L124 PetriNetUnfolderBase]: 2/177 cut-off events. [2023-11-12 02:29:57,222 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:29:57,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 2/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-12 02:29:57,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 180 transitions, 381 flow [2023-11-12 02:29:57,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 172 transitions, 362 flow [2023-11-12 02:29:57,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:29:57,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 172 transitions, 362 flow [2023-11-12 02:29:57,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 172 transitions, 362 flow [2023-11-12 02:29:57,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 362 flow [2023-11-12 02:29:57,326 INFO L124 PetriNetUnfolderBase]: 2/172 cut-off events. [2023-11-12 02:29:57,326 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:29:57,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 2/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 165 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-12 02:29:57,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 2970 [2023-11-12 02:30:03,553 INFO L134 LiptonReduction]: Checked pairs total: 25069 [2023-11-12 02:30:03,555 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-11-12 02:30:03,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:30:03,588 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;@72a86842, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:30:03,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:30:03,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:30:03,591 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:30:03,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:30:03,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:03,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:30:03,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:03,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 815, now seen corresponding path program 1 times [2023-11-12 02:30:03,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262574354] [2023-11-12 02:30:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:03,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:03,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262574354] [2023-11-12 02:30:03,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262574354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:30:03,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433388176] [2023-11-12 02:30:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:03,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:30:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:30:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:30:03,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 319 [2023-11-12 02:30:03,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:03,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:03,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 319 [2023-11-12 02:30:03,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:05,237 INFO L124 PetriNetUnfolderBase]: 5817/9700 cut-off events. [2023-11-12 02:30:05,237 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2023-11-12 02:30:05,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18368 conditions, 9700 events. 5817/9700 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 66958 event pairs, 5817 based on Foata normal form. 0/8145 useless extension candidates. Maximal degree in co-relation 16752. Up to 8445 conditions per place. [2023-11-12 02:30:05,347 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 44 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-11-12 02:30:05,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 224 flow [2023-11-12 02:30:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:30:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:30:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2023-11-12 02:30:05,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626959247648903 [2023-11-12 02:30:05,375 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2023-11-12 02:30:05,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2023-11-12 02:30:05,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:05,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2023-11-12 02:30:05,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 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) [2023-11-12 02:30:05,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 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) [2023-11-12 02:30:05,397 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 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) [2023-11-12 02:30:05,399 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 142 flow. Second operand 2 states and 359 transitions. [2023-11-12 02:30:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 224 flow [2023-11-12 02:30:05,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:30:05,421 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 124 flow [2023-11-12 02:30:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-12 02:30:05,428 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-11-12 02:30:05,428 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 124 flow [2023-11-12 02:30:05,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:05,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:05,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:30:05,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:30:05,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:05,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 804741, now seen corresponding path program 1 times [2023-11-12 02:30:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246854831] [2023-11-12 02:30:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246854831] [2023-11-12 02:30:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246854831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183919961] [2023-11-12 02:30:05,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:05,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:05,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:05,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2023-11-12 02:30:05,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 124 flow. Second operand has 3 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) [2023-11-12 02:30:05,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:05,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2023-11-12 02:30:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:06,925 INFO L124 PetriNetUnfolderBase]: 5698/9504 cut-off events. [2023-11-12 02:30:06,926 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:30:06,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17833 conditions, 9504 events. 5698/9504 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 65461 event pairs, 5698 based on Foata normal form. 0/8021 useless extension candidates. Maximal degree in co-relation 17830. Up to 8253 conditions per place. [2023-11-12 02:30:06,996 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 41 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-12 02:30:06,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 204 flow [2023-11-12 02:30:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-11-12 02:30:07,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005224660397074 [2023-11-12 02:30:07,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-11-12 02:30:07,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-11-12 02:30:07,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:07,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-11-12 02:30:07,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 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) [2023-11-12 02:30:07,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:07,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:07,009 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 124 flow. Second operand 3 states and 479 transitions. [2023-11-12 02:30:07,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 204 flow [2023-11-12 02:30:07,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:07,012 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 122 flow [2023-11-12 02:30:07,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-11-12 02:30:07,013 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-11-12 02:30:07,013 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 122 flow [2023-11-12 02:30:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:30:07,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:07,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:30:07,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:30:07,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:07,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash 804740, now seen corresponding path program 1 times [2023-11-12 02:30:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479780395] [2023-11-12 02:30:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:07,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479780395] [2023-11-12 02:30:07,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479780395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:07,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:07,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042981390] [2023-11-12 02:30:07,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:07,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:07,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:07,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 319 [2023-11-12 02:30:07,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-12 02:30:07,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:07,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 319 [2023-11-12 02:30:07,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:08,419 INFO L124 PetriNetUnfolderBase]: 5579/9308 cut-off events. [2023-11-12 02:30:08,420 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:30:08,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17448 conditions, 9308 events. 5579/9308 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 64010 event pairs, 5579 based on Foata normal form. 0/7897 useless extension candidates. Maximal degree in co-relation 17444. Up to 8062 conditions per place. [2023-11-12 02:30:08,479 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 39 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-12 02:30:08,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 198 flow [2023-11-12 02:30:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-12 02:30:08,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141065830721003 [2023-11-12 02:30:08,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-12 02:30:08,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-12 02:30:08,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:08,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-12 02:30:08,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2023-11-12 02:30:08,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:08,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:08,490 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 122 flow. Second operand 3 states and 492 transitions. [2023-11-12 02:30:08,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 198 flow [2023-11-12 02:30:08,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:08,492 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 119 flow [2023-11-12 02:30:08,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-11-12 02:30:08,497 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-11-12 02:30:08,497 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 119 flow [2023-11-12 02:30:08,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2023-11-12 02:30:08,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:08,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:30:08,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:30:08,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:08,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash 773377742, now seen corresponding path program 1 times [2023-11-12 02:30:08,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597657920] [2023-11-12 02:30:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:08,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597657920] [2023-11-12 02:30:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597657920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:08,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:08,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580344484] [2023-11-12 02:30:08,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:08,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2023-11-12 02:30:08,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:08,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:08,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2023-11-12 02:30:08,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:09,674 INFO L124 PetriNetUnfolderBase]: 5460/9091 cut-off events. [2023-11-12 02:30:09,674 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:30:09,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17041 conditions, 9091 events. 5460/9091 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 62227 event pairs, 5460 based on Foata normal form. 0/7764 useless extension candidates. Maximal degree in co-relation 17037. Up to 7871 conditions per place. [2023-11-12 02:30:09,741 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 37 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-12 02:30:09,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 191 flow [2023-11-12 02:30:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-12 02:30:09,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49634273772204807 [2023-11-12 02:30:09,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-12 02:30:09,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-12 02:30:09,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:09,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-12 02:30:09,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2023-11-12 02:30:09,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:09,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:09,753 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 119 flow. Second operand 3 states and 475 transitions. [2023-11-12 02:30:09,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 191 flow [2023-11-12 02:30:09,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:09,756 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 116 flow [2023-11-12 02:30:09,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2023-11-12 02:30:09,757 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-11-12 02:30:09,758 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 116 flow [2023-11-12 02:30:09,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:09,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:09,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:30:09,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:30:09,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:09,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash 773377744, now seen corresponding path program 1 times [2023-11-12 02:30:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631913655] [2023-11-12 02:30:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:09,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631913655] [2023-11-12 02:30:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631913655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:09,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:09,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893380413] [2023-11-12 02:30:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:09,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:09,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 319 [2023-11-12 02:30:10,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-11-12 02:30:10,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:10,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 319 [2023-11-12 02:30:10,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:10,969 INFO L124 PetriNetUnfolderBase]: 5341/8874 cut-off events. [2023-11-12 02:30:10,969 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:30:10,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16634 conditions, 8874 events. 5341/8874 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 60421 event pairs, 5341 based on Foata normal form. 0/7631 useless extension candidates. Maximal degree in co-relation 16630. Up to 7680 conditions per place. [2023-11-12 02:30:11,027 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 35 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-12 02:30:11,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 184 flow [2023-11-12 02:30:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-12 02:30:11,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509926854754441 [2023-11-12 02:30:11,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-12 02:30:11,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-12 02:30:11,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:11,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-12 02:30:11,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2023-11-12 02:30:11,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:11,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:11,038 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 116 flow. Second operand 3 states and 488 transitions. [2023-11-12 02:30:11,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 184 flow [2023-11-12 02:30:11,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:11,043 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 113 flow [2023-11-12 02:30:11,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-11-12 02:30:11,046 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-12 02:30:11,046 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 113 flow [2023-11-12 02:30:11,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-11-12 02:30:11,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:11,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:30:11,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:11,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash 186689419, now seen corresponding path program 1 times [2023-11-12 02:30:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911504460] [2023-11-12 02:30:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:11,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:11,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911504460] [2023-11-12 02:30:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911504460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:11,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:11,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:30:11,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7941675] [2023-11-12 02:30:11,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:11,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:30:11,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:30:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:30:11,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 319 [2023-11-12 02:30:11,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 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) [2023-11-12 02:30:11,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:11,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 319 [2023-11-12 02:30:11,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:12,006 INFO L124 PetriNetUnfolderBase]: 3997/6738 cut-off events. [2023-11-12 02:30:12,006 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:30:12,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 6738 events. 3997/6738 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 44547 event pairs, 3997 based on Foata normal form. 0/6053 useless extension candidates. Maximal degree in co-relation 12639. Up to 5824 conditions per place. [2023-11-12 02:30:12,055 INFO L140 encePairwiseOnDemand]: 317/319 looper letters, 34 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-11-12 02:30:12,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 181 flow [2023-11-12 02:30:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-12 02:30:12,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670846394984326 [2023-11-12 02:30:12,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-12 02:30:12,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-12 02:30:12,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:12,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-12 02:30:12,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2023-11-12 02:30:12,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:12,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:12,064 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 113 flow. Second operand 3 states and 447 transitions. [2023-11-12 02:30:12,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 181 flow [2023-11-12 02:30:12,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:12,066 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-12 02:30:12,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-12 02:30:12,068 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-12 02:30:12,068 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-12 02:30:12,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 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) [2023-11-12 02:30:12,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:12,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:12,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:30:12,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:12,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash 186689417, now seen corresponding path program 1 times [2023-11-12 02:30:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568083450] [2023-11-12 02:30:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:12,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568083450] [2023-11-12 02:30:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568083450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:12,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:12,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:30:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132978544] [2023-11-12 02:30:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:12,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:12,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2023-11-12 02:30:12,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:12,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:12,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2023-11-12 02:30:12,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:12,665 INFO L124 PetriNetUnfolderBase]: 2653/4602 cut-off events. [2023-11-12 02:30:12,665 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-12 02:30:12,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 4602 events. 2653/4602 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 29417 event pairs, 2653 based on Foata normal form. 0/4475 useless extension candidates. Maximal degree in co-relation 8648. Up to 3968 conditions per place. [2023-11-12 02:30:12,703 INFO L140 encePairwiseOnDemand]: 317/319 looper letters, 33 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-12 02:30:12,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 178 flow [2023-11-12 02:30:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-11-12 02:30:12,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2023-11-12 02:30:12,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-11-12 02:30:12,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-11-12 02:30:12,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:12,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-11-12 02:30:12,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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) [2023-11-12 02:30:12,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:12,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:12,713 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 473 transitions. [2023-11-12 02:30:12,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 178 flow [2023-11-12 02:30:12,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:12,716 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 111 flow [2023-11-12 02:30:12,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-11-12 02:30:12,717 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-12 02:30:12,717 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 111 flow [2023-11-12 02:30:12,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:12,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:12,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:12,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:30:12,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:12,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1886328451, now seen corresponding path program 1 times [2023-11-12 02:30:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970682712] [2023-11-12 02:30:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970682712] [2023-11-12 02:30:13,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970682712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:13,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:30:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506186179] [2023-11-12 02:30:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:30:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:30:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:30:13,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-12 02:30:13,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 111 flow. Second operand has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 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) [2023-11-12 02:30:13,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:13,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-12 02:30:13,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:14,782 INFO L124 PetriNetUnfolderBase]: 6383/9807 cut-off events. [2023-11-12 02:30:14,783 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-12 02:30:14,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19637 conditions, 9807 events. 6383/9807 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 57176 event pairs, 2329 based on Foata normal form. 1/9758 useless extension candidates. Maximal degree in co-relation 19633. Up to 3118 conditions per place. [2023-11-12 02:30:14,850 INFO L140 encePairwiseOnDemand]: 311/319 looper letters, 170 selfloop transitions, 15 changer transitions 26/220 dead transitions. [2023-11-12 02:30:14,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 220 transitions, 901 flow [2023-11-12 02:30:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:30:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:30:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1774 transitions. [2023-11-12 02:30:14,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505557138785979 [2023-11-12 02:30:14,858 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1774 transitions. [2023-11-12 02:30:14,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1774 transitions. [2023-11-12 02:30:14,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:14,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1774 transitions. [2023-11-12 02:30:14,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.27272727272728) internal successors, (1774), 11 states have internal predecessors, (1774), 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) [2023-11-12 02:30:14,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 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) [2023-11-12 02:30:14,876 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 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) [2023-11-12 02:30:14,877 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 111 flow. Second operand 11 states and 1774 transitions. [2023-11-12 02:30:14,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 220 transitions, 901 flow [2023-11-12 02:30:14,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 220 transitions, 900 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:14,883 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 202 flow [2023-11-12 02:30:14,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=202, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-11-12 02:30:14,884 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-11-12 02:30:14,884 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 202 flow [2023-11-12 02:30:14,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 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) [2023-11-12 02:30:14,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:14,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:14,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:30:14,886 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:14,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:14,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1566483359, now seen corresponding path program 2 times [2023-11-12 02:30:14,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:14,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000327970] [2023-11-12 02:30:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:14,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:15,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000327970] [2023-11-12 02:30:15,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000327970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:15,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:15,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:30:15,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836252207] [2023-11-12 02:30:15,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:15,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:30:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:30:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:30:15,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 319 [2023-11-12 02:30:15,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 202 flow. Second operand has 9 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 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) [2023-11-12 02:30:15,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:15,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 319 [2023-11-12 02:30:15,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:17,509 INFO L124 PetriNetUnfolderBase]: 8140/14209 cut-off events. [2023-11-12 02:30:17,509 INFO L125 PetriNetUnfolderBase]: For 278/282 co-relation queries the response was YES. [2023-11-12 02:30:17,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 14209 events. 8140/14209 cut-off events. For 278/282 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 104991 event pairs, 1584 based on Foata normal form. 216/14167 useless extension candidates. Maximal degree in co-relation 28769. Up to 7899 conditions per place. [2023-11-12 02:30:17,621 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 130 selfloop transitions, 36 changer transitions 0/193 dead transitions. [2023-11-12 02:30:17,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 193 transitions, 802 flow [2023-11-12 02:30:17,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:30:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:30:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1600 transitions. [2023-11-12 02:30:17,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015673981191222 [2023-11-12 02:30:17,627 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1600 transitions. [2023-11-12 02:30:17,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1600 transitions. [2023-11-12 02:30:17,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:17,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1600 transitions. [2023-11-12 02:30:17,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 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) [2023-11-12 02:30:17,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 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) [2023-11-12 02:30:17,642 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 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) [2023-11-12 02:30:17,642 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 202 flow. Second operand 10 states and 1600 transitions. [2023-11-12 02:30:17,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 193 transitions, 802 flow [2023-11-12 02:30:17,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 193 transitions, 798 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:30:17,654 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 445 flow [2023-11-12 02:30:17,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2023-11-12 02:30:17,655 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2023-11-12 02:30:17,656 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 445 flow [2023-11-12 02:30:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 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) [2023-11-12 02:30:17,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:17,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:30:17,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:17,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2095791951, now seen corresponding path program 3 times [2023-11-12 02:30:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117447085] [2023-11-12 02:30:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:17,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:17,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117447085] [2023-11-12 02:30:17,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117447085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:17,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:17,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:30:17,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20618174] [2023-11-12 02:30:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:17,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 319 [2023-11-12 02:30:17,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-12 02:30:17,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:17,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 319 [2023-11-12 02:30:17,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:19,260 INFO L124 PetriNetUnfolderBase]: 6471/11722 cut-off events. [2023-11-12 02:30:19,260 INFO L125 PetriNetUnfolderBase]: For 6521/7017 co-relation queries the response was YES. [2023-11-12 02:30:19,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29636 conditions, 11722 events. 6471/11722 cut-off events. For 6521/7017 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 88556 event pairs, 3912 based on Foata normal form. 222/11550 useless extension candidates. Maximal degree in co-relation 29620. Up to 8037 conditions per place. [2023-11-12 02:30:19,381 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 86 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-11-12 02:30:19,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 129 transitions, 712 flow [2023-11-12 02:30:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-12 02:30:19,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329153605015674 [2023-11-12 02:30:19,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-12 02:30:19,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-12 02:30:19,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:19,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-12 02:30:19,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-11-12 02:30:19,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:19,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:19,391 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 445 flow. Second operand 3 states and 510 transitions. [2023-11-12 02:30:19,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 129 transitions, 712 flow [2023-11-12 02:30:19,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 712 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:19,443 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 444 flow [2023-11-12 02:30:19,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2023-11-12 02:30:19,445 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-11-12 02:30:19,445 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 444 flow [2023-11-12 02:30:19,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-12 02:30:19,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:19,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:30:19,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:19,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1501510189, now seen corresponding path program 4 times [2023-11-12 02:30:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742224249] [2023-11-12 02:30:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:19,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:19,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742224249] [2023-11-12 02:30:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742224249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:19,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:19,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:30:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996763784] [2023-11-12 02:30:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:19,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 319 [2023-11-12 02:30:19,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-12 02:30:19,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:19,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 319 [2023-11-12 02:30:19,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:20,774 INFO L124 PetriNetUnfolderBase]: 6026/10914 cut-off events. [2023-11-12 02:30:20,774 INFO L125 PetriNetUnfolderBase]: For 7992/8436 co-relation queries the response was YES. [2023-11-12 02:30:20,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28836 conditions, 10914 events. 6026/10914 cut-off events. For 7992/8436 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 81867 event pairs, 3593 based on Foata normal form. 252/10731 useless extension candidates. Maximal degree in co-relation 28818. Up to 6882 conditions per place. [2023-11-12 02:30:20,869 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 90 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-11-12 02:30:20,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 133 transitions, 770 flow [2023-11-12 02:30:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-12 02:30:20,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329153605015674 [2023-11-12 02:30:20,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-12 02:30:20,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-12 02:30:20,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:20,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-12 02:30:21,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-11-12 02:30:21,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:21,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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) [2023-11-12 02:30:21,008 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 444 flow. Second operand 3 states and 510 transitions. [2023-11-12 02:30:21,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 133 transitions, 770 flow [2023-11-12 02:30:21,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 133 transitions, 764 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:30:21,036 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 450 flow [2023-11-12 02:30:21,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-11-12 02:30:21,037 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-11-12 02:30:21,037 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 450 flow [2023-11-12 02:30:21,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-12 02:30:21,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:21,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:21,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:30:21,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:21,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:21,039 INFO L85 PathProgramCache]: Analyzing trace with hash -192975383, now seen corresponding path program 5 times [2023-11-12 02:30:21,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:21,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539013025] [2023-11-12 02:30:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:21,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539013025] [2023-11-12 02:30:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539013025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:21,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:30:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49927453] [2023-11-12 02:30:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:21,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:30:21,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:21,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:30:21,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:30:21,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-12 02:30:21,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 450 flow. Second operand has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 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) [2023-11-12 02:30:21,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:21,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-12 02:30:21,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:23,684 INFO L124 PetriNetUnfolderBase]: 11373/18086 cut-off events. [2023-11-12 02:30:23,684 INFO L125 PetriNetUnfolderBase]: For 12034/12357 co-relation queries the response was YES. [2023-11-12 02:30:23,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50838 conditions, 18086 events. 11373/18086 cut-off events. For 12034/12357 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 118078 event pairs, 3711 based on Foata normal form. 157/17975 useless extension candidates. Maximal degree in co-relation 50819. Up to 5545 conditions per place. [2023-11-12 02:30:23,869 INFO L140 encePairwiseOnDemand]: 311/319 looper letters, 247 selfloop transitions, 21 changer transitions 32/320 dead transitions. [2023-11-12 02:30:23,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 320 transitions, 1904 flow [2023-11-12 02:30:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:30:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:30:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1770 transitions. [2023-11-12 02:30:23,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044172128811627 [2023-11-12 02:30:23,885 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1770 transitions. [2023-11-12 02:30:23,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1770 transitions. [2023-11-12 02:30:23,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:23,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1770 transitions. [2023-11-12 02:30:23,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 160.9090909090909) internal successors, (1770), 11 states have internal predecessors, (1770), 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) [2023-11-12 02:30:23,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 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) [2023-11-12 02:30:23,901 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 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) [2023-11-12 02:30:23,901 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 450 flow. Second operand 11 states and 1770 transitions. [2023-11-12 02:30:23,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 320 transitions, 1904 flow [2023-11-12 02:30:23,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 320 transitions, 1892 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:30:23,968 INFO L231 Difference]: Finished difference. Result has 105 places, 110 transitions, 564 flow [2023-11-12 02:30:23,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=105, PETRI_TRANSITIONS=110} [2023-11-12 02:30:23,971 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 33 predicate places. [2023-11-12 02:30:23,971 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 110 transitions, 564 flow [2023-11-12 02:30:23,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 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) [2023-11-12 02:30:23,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:23,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:30:23,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:23,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1685359279, now seen corresponding path program 6 times [2023-11-12 02:30:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281101773] [2023-11-12 02:30:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:24,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:24,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281101773] [2023-11-12 02:30:24,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281101773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:24,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:24,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:30:24,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149011999] [2023-11-12 02:30:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:24,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:30:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:24,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:30:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:30:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2023-11-12 02:30:24,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 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) [2023-11-12 02:30:24,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:24,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2023-11-12 02:30:24,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:25,819 INFO L124 PetriNetUnfolderBase]: 6270/11646 cut-off events. [2023-11-12 02:30:25,819 INFO L125 PetriNetUnfolderBase]: For 10053/10467 co-relation queries the response was YES. [2023-11-12 02:30:25,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32475 conditions, 11646 events. 6270/11646 cut-off events. For 10053/10467 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 87478 event pairs, 2919 based on Foata normal form. 58/11355 useless extension candidates. Maximal degree in co-relation 32451. Up to 8832 conditions per place. [2023-11-12 02:30:25,916 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 81 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2023-11-12 02:30:25,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 858 flow [2023-11-12 02:30:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:30:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:30:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 813 transitions. [2023-11-12 02:30:25,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509717868338558 [2023-11-12 02:30:25,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 813 transitions. [2023-11-12 02:30:25,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 813 transitions. [2023-11-12 02:30:25,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:25,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 813 transitions. [2023-11-12 02:30:25,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 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) [2023-11-12 02:30:25,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 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) [2023-11-12 02:30:25,929 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 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) [2023-11-12 02:30:25,929 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 564 flow. Second operand 5 states and 813 transitions. [2023-11-12 02:30:25,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 858 flow [2023-11-12 02:30:25,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 841 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-12 02:30:25,995 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 595 flow [2023-11-12 02:30:25,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2023-11-12 02:30:25,996 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 31 predicate places. [2023-11-12 02:30:25,996 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 595 flow [2023-11-12 02:30:25,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 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) [2023-11-12 02:30:25,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:25,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:25,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:30:25,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:25,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:25,998 INFO L85 PathProgramCache]: Analyzing trace with hash 970186719, now seen corresponding path program 7 times [2023-11-12 02:30:25,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:25,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345108724] [2023-11-12 02:30:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:26,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345108724] [2023-11-12 02:30:26,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345108724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:26,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:30:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714710042] [2023-11-12 02:30:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:26,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:30:26,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:26,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:30:26,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:30:26,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-12 02:30:26,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 595 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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) [2023-11-12 02:30:26,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:26,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-12 02:30:26,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:28,276 INFO L124 PetriNetUnfolderBase]: 9162/16532 cut-off events. [2023-11-12 02:30:28,276 INFO L125 PetriNetUnfolderBase]: For 16414/16913 co-relation queries the response was YES. [2023-11-12 02:30:28,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45846 conditions, 16532 events. 9162/16532 cut-off events. For 16414/16913 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 126208 event pairs, 3005 based on Foata normal form. 178/16402 useless extension candidates. Maximal degree in co-relation 45823. Up to 10333 conditions per place. [2023-11-12 02:30:28,389 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 129 selfloop transitions, 27 changer transitions 0/191 dead transitions. [2023-11-12 02:30:28,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 191 transitions, 1198 flow [2023-11-12 02:30:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:30:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:30:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1121 transitions. [2023-11-12 02:30:28,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020152261531572 [2023-11-12 02:30:28,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1121 transitions. [2023-11-12 02:30:28,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1121 transitions. [2023-11-12 02:30:28,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:28,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1121 transitions. [2023-11-12 02:30:28,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 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) [2023-11-12 02:30:28,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 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) [2023-11-12 02:30:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 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) [2023-11-12 02:30:28,406 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 595 flow. Second operand 7 states and 1121 transitions. [2023-11-12 02:30:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 191 transitions, 1198 flow [2023-11-12 02:30:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 191 transitions, 1170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:30:28,508 INFO L231 Difference]: Finished difference. Result has 110 places, 127 transitions, 751 flow [2023-11-12 02:30:28,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=110, PETRI_TRANSITIONS=127} [2023-11-12 02:30:28,509 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 38 predicate places. [2023-11-12 02:30:28,509 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 127 transitions, 751 flow [2023-11-12 02:30:28,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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) [2023-11-12 02:30:28,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:28,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:28,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:30:28,511 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:28,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2043451869, now seen corresponding path program 8 times [2023-11-12 02:30:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105823085] [2023-11-12 02:30:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105823085] [2023-11-12 02:30:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105823085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:28,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:28,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:30:28,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080057443] [2023-11-12 02:30:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:28,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:30:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:30:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:30:29,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-12 02:30:29,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 127 transitions, 751 flow. Second operand has 9 states, 9 states have (on average 146.33333333333334) internal successors, (1317), 9 states have internal predecessors, (1317), 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) [2023-11-12 02:30:29,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:29,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-12 02:30:29,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:31,292 INFO L124 PetriNetUnfolderBase]: 10472/18774 cut-off events. [2023-11-12 02:30:31,292 INFO L125 PetriNetUnfolderBase]: For 27116/28078 co-relation queries the response was YES. [2023-11-12 02:30:31,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57232 conditions, 18774 events. 10472/18774 cut-off events. For 27116/28078 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 145286 event pairs, 3633 based on Foata normal form. 334/18794 useless extension candidates. Maximal degree in co-relation 57205. Up to 12103 conditions per place. [2023-11-12 02:30:31,459 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 147 selfloop transitions, 32 changer transitions 4/218 dead transitions. [2023-11-12 02:30:31,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 218 transitions, 1485 flow [2023-11-12 02:30:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:30:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:30:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2023-11-12 02:30:31,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49634273772204807 [2023-11-12 02:30:31,466 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2023-11-12 02:30:31,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2023-11-12 02:30:31,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:31,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2023-11-12 02:30:31,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 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) [2023-11-12 02:30:31,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 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) [2023-11-12 02:30:31,477 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 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) [2023-11-12 02:30:31,477 INFO L175 Difference]: Start difference. First operand has 110 places, 127 transitions, 751 flow. Second operand 9 states and 1425 transitions. [2023-11-12 02:30:31,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 218 transitions, 1485 flow [2023-11-12 02:30:31,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 218 transitions, 1451 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:31,646 INFO L231 Difference]: Finished difference. Result has 122 places, 138 transitions, 900 flow [2023-11-12 02:30:31,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=122, PETRI_TRANSITIONS=138} [2023-11-12 02:30:31,647 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 50 predicate places. [2023-11-12 02:30:31,647 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 138 transitions, 900 flow [2023-11-12 02:30:31,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.33333333333334) internal successors, (1317), 9 states have internal predecessors, (1317), 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) [2023-11-12 02:30:31,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:31,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:30:31,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:31,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash 591185877, now seen corresponding path program 9 times [2023-11-12 02:30:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:31,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649625088] [2023-11-12 02:30:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649625088] [2023-11-12 02:30:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649625088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:32,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:32,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:30:32,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032206064] [2023-11-12 02:30:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:32,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:30:32,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:32,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:30:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:30:32,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-11-12 02:30:32,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 138 transitions, 900 flow. Second operand has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 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) [2023-11-12 02:30:32,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:32,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-11-12 02:30:32,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:35,347 INFO L124 PetriNetUnfolderBase]: 12925/22560 cut-off events. [2023-11-12 02:30:35,348 INFO L125 PetriNetUnfolderBase]: For 40795/41863 co-relation queries the response was YES. [2023-11-12 02:30:35,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72053 conditions, 22560 events. 12925/22560 cut-off events. For 40795/41863 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 174170 event pairs, 5231 based on Foata normal form. 210/22337 useless extension candidates. Maximal degree in co-relation 72021. Up to 15937 conditions per place. [2023-11-12 02:30:35,550 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 161 selfloop transitions, 30 changer transitions 2/227 dead transitions. [2023-11-12 02:30:35,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 227 transitions, 1660 flow [2023-11-12 02:30:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:30:35,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:30:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1264 transitions. [2023-11-12 02:30:35,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4952978056426332 [2023-11-12 02:30:35,557 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1264 transitions. [2023-11-12 02:30:35,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1264 transitions. [2023-11-12 02:30:35,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:35,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1264 transitions. [2023-11-12 02:30:35,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 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) [2023-11-12 02:30:35,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 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) [2023-11-12 02:30:35,569 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 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) [2023-11-12 02:30:35,569 INFO L175 Difference]: Start difference. First operand has 122 places, 138 transitions, 900 flow. Second operand 8 states and 1264 transitions. [2023-11-12 02:30:35,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 227 transitions, 1660 flow [2023-11-12 02:30:35,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 227 transitions, 1619 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-12 02:30:35,815 INFO L231 Difference]: Finished difference. Result has 131 places, 160 transitions, 1100 flow [2023-11-12 02:30:35,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=131, PETRI_TRANSITIONS=160} [2023-11-12 02:30:35,816 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 59 predicate places. [2023-11-12 02:30:35,816 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 160 transitions, 1100 flow [2023-11-12 02:30:35,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 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) [2023-11-12 02:30:35,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:35,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:35,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:30:35,818 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:35,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash -562699315, now seen corresponding path program 10 times [2023-11-12 02:30:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671286232] [2023-11-12 02:30:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:36,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671286232] [2023-11-12 02:30:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671286232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:36,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:30:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552429377] [2023-11-12 02:30:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:30:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:30:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:30:36,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-12 02:30:36,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 160 transitions, 1100 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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) [2023-11-12 02:30:36,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:36,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-12 02:30:36,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:39,276 INFO L124 PetriNetUnfolderBase]: 13298/23531 cut-off events. [2023-11-12 02:30:39,276 INFO L125 PetriNetUnfolderBase]: For 55985/57415 co-relation queries the response was YES. [2023-11-12 02:30:39,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80991 conditions, 23531 events. 13298/23531 cut-off events. For 55985/57415 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 187211 event pairs, 5424 based on Foata normal form. 408/23453 useless extension candidates. Maximal degree in co-relation 80953. Up to 16627 conditions per place. [2023-11-12 02:30:39,470 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 154 selfloop transitions, 31 changer transitions 3/228 dead transitions. [2023-11-12 02:30:39,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 228 transitions, 1795 flow [2023-11-12 02:30:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:30:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:30:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1119 transitions. [2023-11-12 02:30:39,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011195700850873 [2023-11-12 02:30:39,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1119 transitions. [2023-11-12 02:30:39,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1119 transitions. [2023-11-12 02:30:39,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:39,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1119 transitions. [2023-11-12 02:30:39,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:39,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 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) [2023-11-12 02:30:39,483 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 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) [2023-11-12 02:30:39,483 INFO L175 Difference]: Start difference. First operand has 131 places, 160 transitions, 1100 flow. Second operand 7 states and 1119 transitions. [2023-11-12 02:30:39,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 228 transitions, 1795 flow [2023-11-12 02:30:39,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 228 transitions, 1749 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:39,767 INFO L231 Difference]: Finished difference. Result has 139 places, 167 transitions, 1218 flow [2023-11-12 02:30:39,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1218, PETRI_PLACES=139, PETRI_TRANSITIONS=167} [2023-11-12 02:30:39,768 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 67 predicate places. [2023-11-12 02:30:39,768 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 167 transitions, 1218 flow [2023-11-12 02:30:39,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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) [2023-11-12 02:30:39,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:39,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:39,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:30:39,769 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-12 02:30:39,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:39,770 INFO L85 PathProgramCache]: Analyzing trace with hash -51301499, now seen corresponding path program 11 times [2023-11-12 02:30:39,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:39,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659685204] [2023-11-12 02:30:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:39,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:39,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659685204] [2023-11-12 02:30:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659685204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:30:39,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113686659] [2023-11-12 02:30:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:39,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:39,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:39,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 319 [2023-11-12 02:30:39,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 167 transitions, 1218 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2023-11-12 02:30:39,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:39,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 319 [2023-11-12 02:30:39,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand