./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix057_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_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/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_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/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_b2c82808-0738-4c98-a833-0e727467088d/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 649d1c1aa65cb6010503451d39379fb2c9cafcc7e0f5f23661f58b5d14c46288 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:04:34,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:04:34,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:04:34,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:04:34,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:04:34,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:04:34,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:04:34,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:04:34,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:04:34,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:04:34,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:04:34,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:04:34,356 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:04:34,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:04:34,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:04:34,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:04:34,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:04:34,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:04:34,361 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:04:34,362 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:04:34,362 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:04:34,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:04:34,363 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:04:34,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:04:34,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:04:34,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:04:34,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:04:34,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:04:34,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:04:34,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:04:34,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:04:34,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:04:34,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:04:34,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:04:34,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:04:34,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:04:34,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:04:34,371 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:04:34,371 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_b2c82808-0738-4c98-a833-0e727467088d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 649d1c1aa65cb6010503451d39379fb2c9cafcc7e0f5f23661f58b5d14c46288 [2023-11-12 02:04:34,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:04:34,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:04:34,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:04:34,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:04:34,811 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:04:34,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:04:38,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:04:38,970 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:04:38,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:04:38,992 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/data/35761f547/944df47bb6a44ba99e9129c12eb5d277/FLAG278cf0b4d [2023-11-12 02:04:39,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/data/35761f547/944df47bb6a44ba99e9129c12eb5d277 [2023-11-12 02:04:39,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:04:39,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:04:39,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:04:39,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:04:39,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:04:39,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ec7575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39, skipping insertion in model container [2023-11-12 02:04:39,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:04:39,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:04:39,667 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:04:39,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:04:39,790 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:04:39,791 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:04:39,801 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:04:39,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39 WrapperNode [2023-11-12 02:04:39,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:04:39,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:04:39,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:04:39,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:04:39,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,928 INFO L138 Inliner]: procedures = 177, calls = 68, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 147 [2023-11-12 02:04:39,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:04:39,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:04:39,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:04:39,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:04:39,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:39,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:40,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:40,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:40,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:04:40,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:04:40,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:04:40,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:04:40,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (1/1) ... [2023-11-12 02:04:40,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:04:40,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:04:40,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:04:40,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c82808-0738-4c98-a833-0e727467088d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:04:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:04:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:04:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:04:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:04:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:04:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:04:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:04:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:04:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:04:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:04:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:04:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:04:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:04:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:04:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:04:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:04:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:04:40,146 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 02:04:40,394 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:04:40,397 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:04:40,924 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:04:41,182 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:04:41,183 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:04:41,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:04:41 BoogieIcfgContainer [2023-11-12 02:04:41,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:04:41,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:04:41,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:04:41,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:04:41,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:04:39" (1/3) ... [2023-11-12 02:04:41,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f812dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:04:41, skipping insertion in model container [2023-11-12 02:04:41,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:04:39" (2/3) ... [2023-11-12 02:04:41,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f812dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:04:41, skipping insertion in model container [2023-11-12 02:04:41,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:04:41" (3/3) ... [2023-11-12 02:04:41,213 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:04:41,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:04:41,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:04:41,236 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:04:41,323 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:04:41,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 147 transitions, 310 flow [2023-11-12 02:04:41,460 INFO L124 PetriNetUnfolderBase]: 3/143 cut-off events. [2023-11-12 02:04:41,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:04:41,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 3/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-12 02:04:41,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 147 transitions, 310 flow [2023-11-12 02:04:41,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 143 transitions, 298 flow [2023-11-12 02:04:41,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:04:41,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 143 transitions, 298 flow [2023-11-12 02:04:41,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 143 transitions, 298 flow [2023-11-12 02:04:41,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 143 transitions, 298 flow [2023-11-12 02:04:41,551 INFO L124 PetriNetUnfolderBase]: 3/143 cut-off events. [2023-11-12 02:04:41,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:04:41,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 3/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-12 02:04:41,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 3934 [2023-11-12 02:04:48,619 INFO L134 LiptonReduction]: Checked pairs total: 9463 [2023-11-12 02:04:48,622 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-11-12 02:04:48,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:04:48,667 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;@1fd8dc9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:04:48,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:04:48,670 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:04:48,671 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:04:48,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:04:48,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:04:48,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:04:48,673 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 02:04:48,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash 642, now seen corresponding path program 1 times [2023-11-12 02:04:48,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:48,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461739904] [2023-11-12 02:04:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:48,868 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 02:04:48,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:48,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461739904] [2023-11-12 02:04:48,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461739904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:48,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:04:48,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477119187] [2023-11-12 02:04:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:48,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:04:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:04:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:04:48,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 288 [2023-11-12 02:04:48,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 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 02:04:48,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:04:48,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 288 [2023-11-12 02:04:48,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:04:51,769 INFO L124 PetriNetUnfolderBase]: 8719/11769 cut-off events. [2023-11-12 02:04:51,769 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-12 02:04:51,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23717 conditions, 11769 events. 8719/11769 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 59827 event pairs, 8719 based on Foata normal form. 0/10345 useless extension candidates. Maximal degree in co-relation 23705. Up to 11731 conditions per place. [2023-11-12 02:04:51,892 INFO L140 encePairwiseOnDemand]: 279/288 looper letters, 28 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-11-12 02:04:51,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 130 flow [2023-11-12 02:04:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:04:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:04:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 299 transitions. [2023-11-12 02:04:51,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190972222222222 [2023-11-12 02:04:51,916 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 299 transitions. [2023-11-12 02:04:51,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 299 transitions. [2023-11-12 02:04:51,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:04:51,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 299 transitions. [2023-11-12 02:04:51,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.5) internal successors, (299), 2 states have internal predecessors, (299), 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 02:04:51,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 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 02:04:51,937 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 288.0) internal successors, (864), 3 states have internal predecessors, (864), 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 02:04:51,940 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 92 flow. Second operand 2 states and 299 transitions. [2023-11-12 02:04:51,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 130 flow [2023-11-12 02:04:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:04:51,952 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 70 flow [2023-11-12 02:04:51,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-12 02:04:51,959 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -11 predicate places. [2023-11-12 02:04:51,959 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 70 flow [2023-11-12 02:04:51,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 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 02:04:51,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:04:51,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:04:51,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:04:51,961 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 02:04:51,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash 631049, now seen corresponding path program 1 times [2023-11-12 02:04:51,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:51,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866419953] [2023-11-12 02:04:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:51,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:52,436 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 02:04:52,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:52,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866419953] [2023-11-12 02:04:52,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866419953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:52,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:52,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:04:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951512371] [2023-11-12 02:04:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:52,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:04:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:04:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:04:52,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 288 [2023-11-12 02:04:52,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 02:04:52,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:04:52,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 288 [2023-11-12 02:04:52,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:04:54,492 INFO L124 PetriNetUnfolderBase]: 6855/9874 cut-off events. [2023-11-12 02:04:54,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:04:54,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19311 conditions, 9874 events. 6855/9874 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 59626 event pairs, 1263 based on Foata normal form. 0/9230 useless extension candidates. Maximal degree in co-relation 19308. Up to 7399 conditions per place. [2023-11-12 02:04:54,581 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 45 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-11-12 02:04:54,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 216 flow [2023-11-12 02:04:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:04:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:04:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-12 02:04:54,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2023-11-12 02:04:54,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-12 02:04:54,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-12 02:04:54,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:04:54,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-12 02:04:54,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:04:54,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:04:54,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:04:54,594 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 70 flow. Second operand 3 states and 440 transitions. [2023-11-12 02:04:54,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 216 flow [2023-11-12 02:04:54,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:04:54,597 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 70 flow [2023-11-12 02:04:54,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-11-12 02:04:54,598 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2023-11-12 02:04:54,598 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 70 flow [2023-11-12 02:04:54,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 02:04:54,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:04:54,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:04:54,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:04:54,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:04:54,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1072963831, now seen corresponding path program 1 times [2023-11-12 02:04:54,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:54,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761997902] [2023-11-12 02:04:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:54,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:04:55,042 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 02:04:55,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:04:55,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761997902] [2023-11-12 02:04:55,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761997902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:04:55,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:04:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:04:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020481434] [2023-11-12 02:04:55,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:04:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:04:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:04:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:04:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:04:55,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 288 [2023-11-12 02:04:55,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 02:04:55,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:04:55,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 288 [2023-11-12 02:04:55,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:04:59,643 INFO L124 PetriNetUnfolderBase]: 20964/28222 cut-off events. [2023-11-12 02:04:59,644 INFO L125 PetriNetUnfolderBase]: For 1400/1400 co-relation queries the response was YES. [2023-11-12 02:04:59,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58246 conditions, 28222 events. 20964/28222 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 150983 event pairs, 8322 based on Foata normal form. 0/27677 useless extension candidates. Maximal degree in co-relation 58242. Up to 14673 conditions per place. [2023-11-12 02:04:59,834 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 44 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2023-11-12 02:04:59,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 230 flow [2023-11-12 02:04:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:04:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:04:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-11-12 02:04:59,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2023-11-12 02:04:59,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-11-12 02:04:59,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-11-12 02:04:59,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:04:59,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-11-12 02:04:59,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 02:04:59,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:04:59,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:04:59,845 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 3 states and 417 transitions. [2023-11-12 02:04:59,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 230 flow [2023-11-12 02:04:59,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:04:59,849 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 136 flow [2023-11-12 02:04:59,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-12 02:04:59,851 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2023-11-12 02:04:59,851 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 136 flow [2023-11-12 02:04:59,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 02:04:59,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:04:59,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:04:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:04:59,858 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 02:04:59,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:04:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1097857786, now seen corresponding path program 1 times [2023-11-12 02:04:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:04:59,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6864079] [2023-11-12 02:04:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:04:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:04:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:00,112 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 02:05:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6864079] [2023-11-12 02:05:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6864079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:00,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:00,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:05:00,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934653667] [2023-11-12 02:05:00,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:05:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:05:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:05:00,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 288 [2023-11-12 02:05:00,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 136 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 02:05:00,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:00,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 288 [2023-11-12 02:05:00,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:05:03,983 INFO L124 PetriNetUnfolderBase]: 20704/27872 cut-off events. [2023-11-12 02:05:03,984 INFO L125 PetriNetUnfolderBase]: For 12931/12931 co-relation queries the response was YES. [2023-11-12 02:05:04,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72779 conditions, 27872 events. 20704/27872 cut-off events. For 12931/12931 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 147944 event pairs, 1611 based on Foata normal form. 30/27902 useless extension candidates. Maximal degree in co-relation 72774. Up to 13525 conditions per place. [2023-11-12 02:05:04,183 INFO L140 encePairwiseOnDemand]: 278/288 looper letters, 62 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2023-11-12 02:05:04,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 408 flow [2023-11-12 02:05:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:05:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:05:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions. [2023-11-12 02:05:04,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800347222222222 [2023-11-12 02:05:04,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions. [2023-11-12 02:05:04,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions. [2023-11-12 02:05:04,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:05:04,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions. [2023-11-12 02:05:04,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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 02:05:04,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:05:04,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:05:04,197 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 136 flow. Second operand 4 states and 553 transitions. [2023-11-12 02:05:04,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 408 flow [2023-11-12 02:05:04,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:05:04,248 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 222 flow [2023-11-12 02:05:04,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-11-12 02:05:04,250 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-11-12 02:05:04,251 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 222 flow [2023-11-12 02:05:04,252 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 02:05:04,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:04,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:04,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:05:04,253 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 02:05:04,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1097856825, now seen corresponding path program 1 times [2023-11-12 02:05:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:04,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2305144] [2023-11-12 02:05:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:04,452 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 02:05:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2305144] [2023-11-12 02:05:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2305144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:04,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:04,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:05:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262841255] [2023-11-12 02:05:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:05:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:05:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:05:04,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-11-12 02:05:04,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 02:05:04,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:04,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-11-12 02:05:04,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:05:07,914 INFO L124 PetriNetUnfolderBase]: 18486/25410 cut-off events. [2023-11-12 02:05:07,915 INFO L125 PetriNetUnfolderBase]: For 23049/23295 co-relation queries the response was YES. [2023-11-12 02:05:07,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70460 conditions, 25410 events. 18486/25410 cut-off events. For 23049/23295 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 143126 event pairs, 5664 based on Foata normal form. 219/25249 useless extension candidates. Maximal degree in co-relation 70453. Up to 22831 conditions per place. [2023-11-12 02:05:08,098 INFO L140 encePairwiseOnDemand]: 284/288 looper letters, 60 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2023-11-12 02:05:08,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 484 flow [2023-11-12 02:05:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:05:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:05:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-11-12 02:05:08,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2023-11-12 02:05:08,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-11-12 02:05:08,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-11-12 02:05:08,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:05:08,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-11-12 02:05:08,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 02:05:08,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:05:08,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:05:08,107 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 222 flow. Second operand 3 states and 430 transitions. [2023-11-12 02:05:08,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 484 flow [2023-11-12 02:05:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:05:08,168 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 293 flow [2023-11-12 02:05:08,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-11-12 02:05:08,169 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-11-12 02:05:08,169 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 293 flow [2023-11-12 02:05:08,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 02:05:08,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:08,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:05:08,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:05:08,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1097860163, now seen corresponding path program 1 times [2023-11-12 02:05:08,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:08,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273408778] [2023-11-12 02:05:08,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:08,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:09,021 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 02:05:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:09,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273408778] [2023-11-12 02:05:09,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273408778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:09,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:05:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397927690] [2023-11-12 02:05:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:09,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:05:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:05:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:05:09,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 288 [2023-11-12 02:05:09,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 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 02:05:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 288 [2023-11-12 02:05:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:05:12,409 INFO L124 PetriNetUnfolderBase]: 14158/19623 cut-off events. [2023-11-12 02:05:12,409 INFO L125 PetriNetUnfolderBase]: For 21970/22857 co-relation queries the response was YES. [2023-11-12 02:05:12,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56464 conditions, 19623 events. 14158/19623 cut-off events. For 21970/22857 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 112143 event pairs, 2777 based on Foata normal form. 1422/20434 useless extension candidates. Maximal degree in co-relation 56455. Up to 13697 conditions per place. [2023-11-12 02:05:12,573 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 53 selfloop transitions, 4 changer transitions 27/97 dead transitions. [2023-11-12 02:05:12,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 97 transitions, 666 flow [2023-11-12 02:05:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:05:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:05:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 834 transitions. [2023-11-12 02:05:12,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2023-11-12 02:05:12,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 834 transitions. [2023-11-12 02:05:12,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 834 transitions. [2023-11-12 02:05:12,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:05:12,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 834 transitions. [2023-11-12 02:05:12,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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 02:05:12,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 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 02:05:12,592 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 288.0) internal successors, (2304), 8 states have internal predecessors, (2304), 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 02:05:12,593 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 293 flow. Second operand 7 states and 834 transitions. [2023-11-12 02:05:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 97 transitions, 666 flow [2023-11-12 02:05:12,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:05:12,640 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 274 flow [2023-11-12 02:05:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-12 02:05:12,643 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-12 02:05:12,643 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 274 flow [2023-11-12 02:05:12,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 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 02:05:12,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:12,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:12,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:05:12,645 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 02:05:12,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1592195136, now seen corresponding path program 1 times [2023-11-12 02:05:12,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:12,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642456028] [2023-11-12 02:05:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:12,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:12,868 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 02:05:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642456028] [2023-11-12 02:05:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642456028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:12,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:05:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529653214] [2023-11-12 02:05:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:12,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:05:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:05:12,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:05:12,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 288 [2023-11-12 02:05:12,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 02:05:12,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:12,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 288 [2023-11-12 02:05:12,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:05:14,991 INFO L124 PetriNetUnfolderBase]: 12813/17485 cut-off events. [2023-11-12 02:05:14,991 INFO L125 PetriNetUnfolderBase]: For 19362/19362 co-relation queries the response was YES. [2023-11-12 02:05:15,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51330 conditions, 17485 events. 12813/17485 cut-off events. For 19362/19362 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 90286 event pairs, 2216 based on Foata normal form. 32/17517 useless extension candidates. Maximal degree in co-relation 51321. Up to 8532 conditions per place. [2023-11-12 02:05:15,085 INFO L140 encePairwiseOnDemand]: 279/288 looper letters, 67 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2023-11-12 02:05:15,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 91 transitions, 634 flow [2023-11-12 02:05:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:05:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:05:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions. [2023-11-12 02:05:15,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800347222222222 [2023-11-12 02:05:15,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions. [2023-11-12 02:05:15,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions. [2023-11-12 02:05:15,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:05:15,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions. [2023-11-12 02:05:15,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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 02:05:15,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:05:15,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:05:15,095 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 274 flow. Second operand 4 states and 553 transitions. [2023-11-12 02:05:15,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 91 transitions, 634 flow [2023-11-12 02:05:15,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 91 transitions, 619 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:05:15,129 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 465 flow [2023-11-12 02:05:15,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=465, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2023-11-12 02:05:15,130 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-12 02:05:15,131 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 465 flow [2023-11-12 02:05:15,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 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 02:05:15,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:15,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:05:15,132 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 02:05:15,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1520752817, now seen corresponding path program 1 times [2023-11-12 02:05:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351488085] [2023-11-12 02:05:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:15,249 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 02:05:15,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:15,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351488085] [2023-11-12 02:05:15,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351488085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:15,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:15,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:05:15,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018529250] [2023-11-12 02:05:15,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:15,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:05:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:15,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:05:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:05:15,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-11-12 02:05:15,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 02:05:15,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:15,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-11-12 02:05:15,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:05:18,303 INFO L124 PetriNetUnfolderBase]: 15051/21309 cut-off events. [2023-11-12 02:05:18,303 INFO L125 PetriNetUnfolderBase]: For 47960/49003 co-relation queries the response was YES. [2023-11-12 02:05:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64572 conditions, 21309 events. 15051/21309 cut-off events. For 47960/49003 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 126343 event pairs, 6968 based on Foata normal form. 727/21757 useless extension candidates. Maximal degree in co-relation 64561. Up to 11633 conditions per place. [2023-11-12 02:05:18,437 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 58 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2023-11-12 02:05:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 79 transitions, 674 flow [2023-11-12 02:05:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:05:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:05:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-11-12 02:05:18,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-11-12 02:05:18,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-11-12 02:05:18,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-11-12 02:05:18,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:05:18,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-11-12 02:05:18,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 02:05:18,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:05:18,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 02:05:18,450 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 465 flow. Second operand 3 states and 428 transitions. [2023-11-12 02:05:18,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 79 transitions, 674 flow [2023-11-12 02:05:18,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 674 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:05:18,519 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 479 flow [2023-11-12 02:05:18,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-11-12 02:05:18,523 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-11-12 02:05:18,524 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 479 flow [2023-11-12 02:05:18,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 02:05:18,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:18,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:05:18,525 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 02:05:18,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1936249689, now seen corresponding path program 1 times [2023-11-12 02:05:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466993084] [2023-11-12 02:05:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:18,869 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 02:05:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:18,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466993084] [2023-11-12 02:05:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466993084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:18,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:05:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771762611] [2023-11-12 02:05:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:18,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:05:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:18,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:05:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:05:18,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 288 [2023-11-12 02:05:18,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 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 02:05:18,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:18,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 288 [2023-11-12 02:05:18,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:05:21,389 INFO L124 PetriNetUnfolderBase]: 11735/17495 cut-off events. [2023-11-12 02:05:21,390 INFO L125 PetriNetUnfolderBase]: For 43708/45265 co-relation queries the response was YES. [2023-11-12 02:05:21,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52029 conditions, 17495 events. 11735/17495 cut-off events. For 43708/45265 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 114472 event pairs, 1855 based on Foata normal form. 2064/19429 useless extension candidates. Maximal degree in co-relation 52016. Up to 10987 conditions per place. [2023-11-12 02:05:21,506 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 126 selfloop transitions, 10 changer transitions 0/153 dead transitions. [2023-11-12 02:05:21,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 153 transitions, 1441 flow [2023-11-12 02:05:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:05:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:05:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-11-12 02:05:21,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701388888888889 [2023-11-12 02:05:21,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-11-12 02:05:21,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-11-12 02:05:21,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:05:21,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-11-12 02:05:21,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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 02:05:21,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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 02:05:21,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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 02:05:21,519 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 479 flow. Second operand 5 states and 677 transitions. [2023-11-12 02:05:21,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 153 transitions, 1441 flow [2023-11-12 02:05:21,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 153 transitions, 1400 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:05:21,565 INFO L231 Difference]: Finished difference. Result has 63 places, 68 transitions, 540 flow [2023-11-12 02:05:21,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=540, PETRI_PLACES=63, PETRI_TRANSITIONS=68} [2023-11-12 02:05:21,566 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-11-12 02:05:21,566 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 68 transitions, 540 flow [2023-11-12 02:05:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 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 02:05:21,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:05:21,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:21,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:05:21,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:05:21,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash -158459398, now seen corresponding path program 1 times [2023-11-12 02:05:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344575383] [2023-11-12 02:05:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:21,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:21,747 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 02:05:21,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344575383] [2023-11-12 02:05:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344575383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:21,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:05:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368078010] [2023-11-12 02:05:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:05:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:05:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:05:21,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-11-12 02:05:21,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:05:21,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:05:21,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-11-12 02:05:21,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand