./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i --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_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/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_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/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_c9bc0043-f85d-4719-99fa-3107c46d3680/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 b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:25,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:25,881 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:09:25,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:25,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:25,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:25,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:25,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:25,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:25,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:25,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:25,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:25,921 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:25,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:25,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:25,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:25,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:25,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:25,925 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:09:25,926 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:09:25,926 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:09:25,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:25,927 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:09:25,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:09:25,928 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:25,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:25,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:25,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:25,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:25,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:25,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:25,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:25,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:25,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:25,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:25,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:25,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:25,933 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:25,933 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_c9bc0043-f85d-4719-99fa-3107c46d3680/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2023-11-12 02:09:26,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:26,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:26,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:26,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:26,210 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:26,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:09:29,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:29,877 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:29,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:09:29,901 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/data/c4dea8d4a/63c6112136f44bd2b81bb4eb610753e3/FLAG14192f1dd [2023-11-12 02:09:29,917 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/data/c4dea8d4a/63c6112136f44bd2b81bb4eb610753e3 [2023-11-12 02:09:29,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:29,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:29,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:29,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:29,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:29,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:29" (1/1) ... [2023-11-12 02:09:29,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49396d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:29, skipping insertion in model container [2023-11-12 02:09:29,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:29" (1/1) ... [2023-11-12 02:09:29,995 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:30,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:30,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:30,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:30,552 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:30,552 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:30,561 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:30,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30 WrapperNode [2023-11-12 02:09:30,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:30,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:30,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:30,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:30,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,652 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-12 02:09:30,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:30,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:30,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:30,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:30,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:30,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:30,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:30,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:30,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (1/1) ... [2023-11-12 02:09:30,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:30,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:30,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9bc0043-f85d-4719-99fa-3107c46d3680/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:09:30,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:09:30,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:09:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:09:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:09:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:09:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:09:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:09:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:09:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:09:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:09:30,816 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:09:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:09:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:30,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:30,820 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 02:09:30,980 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:30,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:31,456 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:31,647 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:31,647 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:09:31,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:31 BoogieIcfgContainer [2023-11-12 02:09:31,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:31,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:31,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:31,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:31,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:29" (1/3) ... [2023-11-12 02:09:31,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f4a3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:31, skipping insertion in model container [2023-11-12 02:09:31,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:30" (2/3) ... [2023-11-12 02:09:31,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f4a3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:31, skipping insertion in model container [2023-11-12 02:09:31,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:31" (3/3) ... [2023-11-12 02:09:31,659 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:09:31,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:31,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:09:31,679 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:09:31,746 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:09:31,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 152 transitions, 320 flow [2023-11-12 02:09:31,850 INFO L124 PetriNetUnfolderBase]: 3/148 cut-off events. [2023-11-12 02:09:31,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 3/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:09:31,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 152 transitions, 320 flow [2023-11-12 02:09:31,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 148 transitions, 308 flow [2023-11-12 02:09:31,867 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:09:31,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 148 transitions, 308 flow [2023-11-12 02:09:31,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 148 transitions, 308 flow [2023-11-12 02:09:31,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 148 transitions, 308 flow [2023-11-12 02:09:31,919 INFO L124 PetriNetUnfolderBase]: 3/148 cut-off events. [2023-11-12 02:09:31,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:31,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 3/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:09:31,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 4232 [2023-11-12 02:09:38,085 INFO L134 LiptonReduction]: Checked pairs total: 11563 [2023-11-12 02:09:38,085 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-12 02:09:38,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:38,124 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;@6ede74ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:38,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:09:38,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:09:38,126 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:09:38,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:38,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:38,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:09:38,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:09:38,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 658, now seen corresponding path program 1 times [2023-11-12 02:09:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:38,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149676929] [2023-11-12 02:09:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:38,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,275 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 02:09:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:38,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149676929] [2023-11-12 02:09:38,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149676929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:09:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688244031] [2023-11-12 02:09:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:38,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:09:38,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:09:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:09:38,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 299 [2023-11-12 02:09:38,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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 02:09:38,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:38,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 299 [2023-11-12 02:09:38,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:40,644 INFO L124 PetriNetUnfolderBase]: 8719/11853 cut-off events. [2023-11-12 02:09:40,644 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:09:40,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23801 conditions, 11853 events. 8719/11853 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 63577 event pairs, 8719 based on Foata normal form. 0/10315 useless extension candidates. Maximal degree in co-relation 23789. Up to 11731 conditions per place. [2023-11-12 02:09:40,757 INFO L140 encePairwiseOnDemand]: 290/299 looper letters, 28 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-11-12 02:09:40,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 134 flow [2023-11-12 02:09:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:09:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:09:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-11-12 02:09:40,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167224080267558 [2023-11-12 02:09:40,773 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-11-12 02:09:40,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-11-12 02:09:40,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:40,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-11-12 02:09:40,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:40,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 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 02:09:40,793 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 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 02:09:40,795 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 2 states and 309 transitions. [2023-11-12 02:09:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 134 flow [2023-11-12 02:09:40,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:09:40,806 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 74 flow [2023-11-12 02:09:40,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-12 02:09:40,812 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-12 02:09:40,812 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 74 flow [2023-11-12 02:09:40,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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 02:09:40,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:40,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:09:40,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:09:40,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:09:40,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:40,815 INFO L85 PathProgramCache]: Analyzing trace with hash 646705, now seen corresponding path program 1 times [2023-11-12 02:09:40,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:40,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100608994] [2023-11-12 02:09:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:41,148 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 02:09:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100608994] [2023-11-12 02:09:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100608994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:41,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:09:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842649926] [2023-11-12 02:09:41,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:41,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:41,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:41,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 299 [2023-11-12 02:09:41,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 02:09:41,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:41,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 299 [2023-11-12 02:09:41,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:42,940 INFO L124 PetriNetUnfolderBase]: 6855/9891 cut-off events. [2023-11-12 02:09:42,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:42,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 9891 events. 6855/9891 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 62018 event pairs, 1263 based on Foata normal form. 0/9223 useless extension candidates. Maximal degree in co-relation 19325. Up to 7399 conditions per place. [2023-11-12 02:09:43,013 INFO L140 encePairwiseOnDemand]: 296/299 looper letters, 45 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-12 02:09:43,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 220 flow [2023-11-12 02:09:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:09:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-11-12 02:09:43,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2023-11-12 02:09:43,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-11-12 02:09:43,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-11-12 02:09:43,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:43,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-11-12 02:09:43,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 02:09:43,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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 02:09:43,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 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 02:09:43,038 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 74 flow. Second operand 3 states and 455 transitions. [2023-11-12 02:09:43,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 220 flow [2023-11-12 02:09:43,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:43,040 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 74 flow [2023-11-12 02:09:43,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-11-12 02:09:43,042 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-12 02:09:43,043 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 74 flow [2023-11-12 02:09:43,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 02:09:43,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:43,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:43,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:09:43,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:09:43,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2025480697, now seen corresponding path program 1 times [2023-11-12 02:09:43,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:43,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061464704] [2023-11-12 02:09:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:43,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:43,976 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 02:09:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061464704] [2023-11-12 02:09:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061464704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:09:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930475850] [2023-11-12 02:09:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:43,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:43,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:44,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 299 [2023-11-12 02:09:44,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 02:09:44,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:44,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 299 [2023-11-12 02:09:44,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:45,596 INFO L124 PetriNetUnfolderBase]: 4903/6789 cut-off events. [2023-11-12 02:09:45,597 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2023-11-12 02:09:45,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14078 conditions, 6789 events. 4903/6789 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 35053 event pairs, 1832 based on Foata normal form. 0/6738 useless extension candidates. Maximal degree in co-relation 14074. Up to 6432 conditions per place. [2023-11-12 02:09:45,658 INFO L140 encePairwiseOnDemand]: 294/299 looper letters, 39 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2023-11-12 02:09:45,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 200 flow [2023-11-12 02:09:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:09:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2023-11-12 02:09:45,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124860646599777 [2023-11-12 02:09:45,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2023-11-12 02:09:45,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2023-11-12 02:09:45,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:45,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2023-11-12 02:09:45,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 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 02:09:45,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 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 02:09:45,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 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 02:09:45,675 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 74 flow. Second operand 6 states and 740 transitions. [2023-11-12 02:09:45,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 200 flow [2023-11-12 02:09:45,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:45,679 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 76 flow [2023-11-12 02:09:45,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-11-12 02:09:45,681 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-11-12 02:09:45,681 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 76 flow [2023-11-12 02:09:45,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 02:09:45,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:45,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:09:45,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:09:45,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2025480662, now seen corresponding path program 1 times [2023-11-12 02:09:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969731140] [2023-11-12 02:09:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:45,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:45,958 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 02:09:45,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:45,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969731140] [2023-11-12 02:09:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969731140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:45,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:45,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211648114] [2023-11-12 02:09:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:45,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:09:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:09:45,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:09:46,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 299 [2023-11-12 02:09:46,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 02:09:46,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:46,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 299 [2023-11-12 02:09:46,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:51,126 INFO L124 PetriNetUnfolderBase]: 29612/39983 cut-off events. [2023-11-12 02:09:51,126 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2023-11-12 02:09:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80888 conditions, 39983 events. 29612/39983 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 223070 event pairs, 9027 based on Foata normal form. 1635/41618 useless extension candidates. Maximal degree in co-relation 80884. Up to 20747 conditions per place. [2023-11-12 02:09:51,355 INFO L140 encePairwiseOnDemand]: 288/299 looper letters, 46 selfloop transitions, 9 changer transitions 37/92 dead transitions. [2023-11-12 02:09:51,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 92 transitions, 392 flow [2023-11-12 02:09:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:09:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-11-12 02:09:51,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46755852842809364 [2023-11-12 02:09:51,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-11-12 02:09:51,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-11-12 02:09:51,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:51,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-11-12 02:09:51,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 02:09:51,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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 02:09:51,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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 02:09:51,371 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 76 flow. Second operand 5 states and 699 transitions. [2023-11-12 02:09:51,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 92 transitions, 392 flow [2023-11-12 02:09:51,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 92 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:09:51,375 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 159 flow [2023-11-12 02:09:51,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-11-12 02:09:51,376 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-12 02:09:51,377 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 159 flow [2023-11-12 02:09:51,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 02:09:51,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:51,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:51,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:09:51,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:09:51,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1634623792, now seen corresponding path program 1 times [2023-11-12 02:09:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680598405] [2023-11-12 02:09:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:51,737 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 02:09:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680598405] [2023-11-12 02:09:51,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680598405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:51,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296958159] [2023-11-12 02:09:51,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:51,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:51,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:09:51,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 299 [2023-11-12 02:09:51,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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 02:09:51,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:51,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 299 [2023-11-12 02:09:51,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:56,779 INFO L124 PetriNetUnfolderBase]: 27540/37421 cut-off events. [2023-11-12 02:09:56,779 INFO L125 PetriNetUnfolderBase]: For 28690/28690 co-relation queries the response was YES. [2023-11-12 02:09:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104635 conditions, 37421 events. 27540/37421 cut-off events. For 28690/28690 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 208728 event pairs, 2268 based on Foata normal form. 1365/38786 useless extension candidates. Maximal degree in co-relation 104628. Up to 19262 conditions per place. [2023-11-12 02:09:57,055 INFO L140 encePairwiseOnDemand]: 288/299 looper letters, 61 selfloop transitions, 13 changer transitions 50/124 dead transitions. [2023-11-12 02:09:57,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 124 transitions, 727 flow [2023-11-12 02:09:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:09:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 965 transitions. [2023-11-12 02:09:57,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610606784519828 [2023-11-12 02:09:57,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 965 transitions. [2023-11-12 02:09:57,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 965 transitions. [2023-11-12 02:09:57,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:57,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 965 transitions. [2023-11-12 02:09:57,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.85714285714286) internal successors, (965), 7 states have internal predecessors, (965), 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 02:09:57,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 02:09:57,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 02:09:57,073 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 159 flow. Second operand 7 states and 965 transitions. [2023-11-12 02:09:57,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 124 transitions, 727 flow [2023-11-12 02:09:57,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 124 transitions, 673 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:57,226 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 259 flow [2023-11-12 02:09:57,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-12 02:09:57,228 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-12 02:09:57,228 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 259 flow [2023-11-12 02:09:57,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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 02:09:57,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:57,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:09:57,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:09:57,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1634625714, now seen corresponding path program 1 times [2023-11-12 02:09:57,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:57,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146705089] [2023-11-12 02:09:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:57,409 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 02:09:57,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:57,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146705089] [2023-11-12 02:09:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146705089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:57,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:57,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:57,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128959611] [2023-11-12 02:09:57,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:57,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:09:57,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 299 [2023-11-12 02:09:57,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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 02:09:57,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:57,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 299 [2023-11-12 02:09:57,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:02,479 INFO L124 PetriNetUnfolderBase]: 25541/34765 cut-off events. [2023-11-12 02:10:02,479 INFO L125 PetriNetUnfolderBase]: For 74886/74886 co-relation queries the response was YES. [2023-11-12 02:10:02,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108121 conditions, 34765 events. 25541/34765 cut-off events. For 74886/74886 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 190471 event pairs, 5257 based on Foata normal form. 1500/36265 useless extension candidates. Maximal degree in co-relation 108109. Up to 13469 conditions per place. [2023-11-12 02:10:02,783 INFO L140 encePairwiseOnDemand]: 289/299 looper letters, 70 selfloop transitions, 9 changer transitions 55/134 dead transitions. [2023-11-12 02:10:02,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 134 transitions, 913 flow [2023-11-12 02:10:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:10:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:10:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 962 transitions. [2023-11-12 02:10:02,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2023-11-12 02:10:02,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 962 transitions. [2023-11-12 02:10:02,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 962 transitions. [2023-11-12 02:10:02,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:02,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 962 transitions. [2023-11-12 02:10:02,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 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 02:10:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 02:10:02,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 02:10:02,802 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 259 flow. Second operand 7 states and 962 transitions. [2023-11-12 02:10:02,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 134 transitions, 913 flow [2023-11-12 02:10:03,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 134 transitions, 901 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-12 02:10:03,524 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 357 flow [2023-11-12 02:10:03,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-11-12 02:10:03,526 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-11-12 02:10:03,526 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 357 flow [2023-11-12 02:10:03,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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 02:10:03,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:03,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:03,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:10:03,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:10:03,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 263748488, now seen corresponding path program 1 times [2023-11-12 02:10:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655263592] [2023-11-12 02:10:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:03,783 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 02:10:03,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655263592] [2023-11-12 02:10:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655263592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:03,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:03,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:10:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367850145] [2023-11-12 02:10:03,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:03,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:10:03,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:10:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:10:03,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 299 [2023-11-12 02:10:03,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 357 flow. Second operand has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 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 02:10:03,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:03,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 299 [2023-11-12 02:10:03,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:08,751 INFO L124 PetriNetUnfolderBase]: 23827/32464 cut-off events. [2023-11-12 02:10:08,752 INFO L125 PetriNetUnfolderBase]: For 107461/107461 co-relation queries the response was YES. [2023-11-12 02:10:08,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111240 conditions, 32464 events. 23827/32464 cut-off events. For 107461/107461 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 179344 event pairs, 4494 based on Foata normal form. 1089/33553 useless extension candidates. Maximal degree in co-relation 111222. Up to 16986 conditions per place. [2023-11-12 02:10:09,034 INFO L140 encePairwiseOnDemand]: 288/299 looper letters, 71 selfloop transitions, 27 changer transitions 46/144 dead transitions. [2023-11-12 02:10:09,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 144 transitions, 1125 flow [2023-11-12 02:10:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:10:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:10:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 968 transitions. [2023-11-12 02:10:09,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462494027711419 [2023-11-12 02:10:09,045 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 968 transitions. [2023-11-12 02:10:09,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 968 transitions. [2023-11-12 02:10:09,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:09,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 968 transitions. [2023-11-12 02:10:09,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 7 states have internal predecessors, (968), 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 02:10:09,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 02:10:09,064 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 02:10:09,065 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 357 flow. Second operand 7 states and 968 transitions. [2023-11-12 02:10:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 144 transitions, 1125 flow [2023-11-12 02:10:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 144 transitions, 1094 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-12 02:10:10,118 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 607 flow [2023-11-12 02:10:10,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=607, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-11-12 02:10:10,119 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-11-12 02:10:10,119 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 607 flow [2023-11-12 02:10:10,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 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 02:10:10,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:10,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:10:10,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:10:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1083957638, now seen corresponding path program 1 times [2023-11-12 02:10:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649464710] [2023-11-12 02:10:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:10,350 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 02:10:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649464710] [2023-11-12 02:10:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649464710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:10:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651643215] [2023-11-12 02:10:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:10,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:10:10,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:10:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:10:10,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 299 [2023-11-12 02:10:10,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 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 02:10:10,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:10,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 299 [2023-11-12 02:10:10,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:14,415 INFO L124 PetriNetUnfolderBase]: 16102/23339 cut-off events. [2023-11-12 02:10:14,415 INFO L125 PetriNetUnfolderBase]: For 95122/96929 co-relation queries the response was YES. [2023-11-12 02:10:14,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81012 conditions, 23339 events. 16102/23339 cut-off events. For 95122/96929 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 147255 event pairs, 4311 based on Foata normal form. 1439/24174 useless extension candidates. Maximal degree in co-relation 80992. Up to 13840 conditions per place. [2023-11-12 02:10:14,658 INFO L140 encePairwiseOnDemand]: 295/299 looper letters, 58 selfloop transitions, 5 changer transitions 27/111 dead transitions. [2023-11-12 02:10:14,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 1022 flow [2023-11-12 02:10:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:10:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:10:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2023-11-12 02:10:14,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4862876254180602 [2023-11-12 02:10:14,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2023-11-12 02:10:14,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2023-11-12 02:10:14,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:14,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2023-11-12 02:10:14,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 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 02:10:14,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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 02:10:14,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 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 02:10:14,676 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 607 flow. Second operand 5 states and 727 transitions. [2023-11-12 02:10:14,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 1022 flow [2023-11-12 02:10:15,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 998 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-12 02:10:15,234 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 606 flow [2023-11-12 02:10:15,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=606, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-11-12 02:10:15,235 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-11-12 02:10:15,236 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 606 flow [2023-11-12 02:10:15,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 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 02:10:15,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:15,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:10:15,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:10:15,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:10:15,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1842579351, now seen corresponding path program 1 times [2023-11-12 02:10:15,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:10:15,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945181735] [2023-11-12 02:10:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:15,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:10:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:15,453 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 02:10:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:10:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945181735] [2023-11-12 02:10:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945181735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:15,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:10:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73311846] [2023-11-12 02:10:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:10:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:10:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:10:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:10:15,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-12 02:10:15,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 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 02:10:15,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:15,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-12 02:10:15,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand