./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.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_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/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_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/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_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/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 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:30:54,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:30:54,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:30:54,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:30:54,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:30:54,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:30:54,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:30:54,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:30:54,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:30:54,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:30:54,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:30:54,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:30:54,225 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:30:54,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:30:54,226 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:30:54,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:30:54,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:30:54,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:30:54,228 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:30:54,229 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:30:54,230 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:30:54,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:30:54,231 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:30:54,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:30:54,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:30:54,233 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:30:54,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:30:54,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:30:54,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:30:54,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:30:54,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:30:54,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:30:54,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:30:54,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:30:54,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:30:54,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:30:54,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:30:54,238 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:30:54,238 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_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 [2023-11-12 02:30:54,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:30:54,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:30:54,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:30:54,557 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:30:54,558 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:30:54,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-12 02:30:57,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:30:58,059 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:30:58,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-12 02:30:58,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/data/48b2cb59a/570d85cf7a9149e6bf29d49679bf58f7/FLAGd64c6e37d [2023-11-12 02:30:58,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/data/48b2cb59a/570d85cf7a9149e6bf29d49679bf58f7 [2023-11-12 02:30:58,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:30:58,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:30:58,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:30:58,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:30:58,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:30:58,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:58,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fb5ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58, skipping insertion in model container [2023-11-12 02:30:58,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:58,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:30:58,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:30:58,696 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:30:58,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:30:58,885 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:30:58,886 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:30:58,895 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:30:58,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58 WrapperNode [2023-11-12 02:30:58,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:30:58,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:30:58,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:30:58,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:30:58,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:58,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,027 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-12 02:30:59,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:30:59,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:30:59,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:30:59,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:30:59,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:30:59,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:30:59,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:30:59,122 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:30:59,123 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (1/1) ... [2023-11-12 02:30:59,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:30:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:30:59,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:30:59,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23911759-c9c2-4cdb-a4d2-e7fb20f6333e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:30:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:30:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:30:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:30:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:30:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:30:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:30:59,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:30:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:30:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:30:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:30:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:30:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:30:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:30:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:30:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:30:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:30:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:30:59,368 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 02:30:59,588 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:30:59,590 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:31:00,105 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:31:00,328 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:31:00,329 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:31:00,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:00 BoogieIcfgContainer [2023-11-12 02:31:00,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:31:00,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:31:00,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:31:00,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:31:00,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:30:58" (1/3) ... [2023-11-12 02:31:00,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7821c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:00, skipping insertion in model container [2023-11-12 02:31:00,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:30:58" (2/3) ... [2023-11-12 02:31:00,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7821c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:00, skipping insertion in model container [2023-11-12 02:31:00,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:00" (3/3) ... [2023-11-12 02:31:00,347 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2023-11-12 02:31:00,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:31:00,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:31:00,374 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:31:00,455 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:31:00,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 152 transitions, 320 flow [2023-11-12 02:31:00,598 INFO L124 PetriNetUnfolderBase]: 3/148 cut-off events. [2023-11-12 02:31:00,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:31:00,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 3/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:31:00,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 152 transitions, 320 flow [2023-11-12 02:31:00,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 148 transitions, 308 flow [2023-11-12 02:31:00,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:31:00,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 148 transitions, 308 flow [2023-11-12 02:31:00,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 148 transitions, 308 flow [2023-11-12 02:31:00,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 148 transitions, 308 flow [2023-11-12 02:31:00,674 INFO L124 PetriNetUnfolderBase]: 3/148 cut-off events. [2023-11-12 02:31:00,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:31:00,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 3/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:31:00,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 4194 [2023-11-12 02:31:06,864 INFO L134 LiptonReduction]: Checked pairs total: 11202 [2023-11-12 02:31:06,864 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-11-12 02:31:06,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:31:06,903 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;@53b6b5ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:31:06,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:31:06,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:31:06,905 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:31:06,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:31:06,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:06,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:31:06,907 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 02:31:06,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash 652, now seen corresponding path program 1 times [2023-11-12 02:31:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246945516] [2023-11-12 02:31:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:07,054 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 02:31:07,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:07,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246945516] [2023-11-12 02:31:07,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246945516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:07,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:07,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:31:07,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388284442] [2023-11-12 02:31:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:31:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:31:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:31:07,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-11-12 02:31:07,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:07,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:07,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-11-12 02:31:07,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:09,820 INFO L124 PetriNetUnfolderBase]: 10487/14082 cut-off events. [2023-11-12 02:31:09,820 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-12 02:31:09,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28358 conditions, 14082 events. 10487/14082 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 72186 event pairs, 10487 based on Foata normal form. 0/12386 useless extension candidates. Maximal degree in co-relation 28346. Up to 14059 conditions per place. [2023-11-12 02:31:09,961 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-12 02:31:09,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 134 flow [2023-11-12 02:31:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:31:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:31:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2023-11-12 02:31:09,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308219178082192 [2023-11-12 02:31:09,986 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2023-11-12 02:31:09,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2023-11-12 02:31:10,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:10,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2023-11-12 02:31:10,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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 02:31:10,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 02:31:10,015 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 02:31:10,017 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 310 transitions. [2023-11-12 02:31:10,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 134 flow [2023-11-12 02:31:10,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:31:10,034 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-12 02:31:10,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-12 02:31:10,040 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-12 02:31:10,040 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-12 02:31:10,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:10,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:10,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:31:10,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:31:10,042 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 02:31:10,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 643823, now seen corresponding path program 1 times [2023-11-12 02:31:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376815606] [2023-11-12 02:31:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:10,383 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 02:31:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376815606] [2023-11-12 02:31:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376815606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:10,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:31:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005721565] [2023-11-12 02:31:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:10,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:10,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:10,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-11-12 02:31:10,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:10,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:10,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-11-12 02:31:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:12,546 INFO L124 PetriNetUnfolderBase]: 8247/11823 cut-off events. [2023-11-12 02:31:12,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:31:12,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23100 conditions, 11823 events. 8247/11823 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 72043 event pairs, 1527 based on Foata normal form. 0/11051 useless extension candidates. Maximal degree in co-relation 23097. Up to 8863 conditions per place. [2023-11-12 02:31:12,647 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 47 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-12 02:31:12,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 224 flow [2023-11-12 02:31:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:12,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:31:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-12 02:31:12,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521689497716895 [2023-11-12 02:31:12,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-12 02:31:12,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-12 02:31:12,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:12,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-12 02:31:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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 02:31:12,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:12,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:12,661 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 457 transitions. [2023-11-12 02:31:12,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 224 flow [2023-11-12 02:31:12,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:31:12,663 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-12 02:31:12,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-12 02:31:12,664 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-12 02:31:12,665 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-12 02:31:12,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:12,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:12,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:12,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:31:12,667 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 02:31:12,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:12,667 INFO L85 PathProgramCache]: Analyzing trace with hash 772626204, now seen corresponding path program 1 times [2023-11-12 02:31:12,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:12,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333150449] [2023-11-12 02:31:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:12,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:13,071 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 02:31:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333150449] [2023-11-12 02:31:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333150449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:13,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:13,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:31:13,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135676273] [2023-11-12 02:31:13,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:13,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:13,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:13,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 292 [2023-11-12 02:31:13,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 02:31:13,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:13,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 292 [2023-11-12 02:31:13,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:15,039 INFO L124 PetriNetUnfolderBase]: 8855/11911 cut-off events. [2023-11-12 02:31:15,040 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2023-11-12 02:31:15,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24784 conditions, 11911 events. 8855/11911 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 59871 event pairs, 1831 based on Foata normal form. 0/11457 useless extension candidates. Maximal degree in co-relation 24780. Up to 11169 conditions per place. [2023-11-12 02:31:15,126 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 40 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-12 02:31:15,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 192 flow [2023-11-12 02:31:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:31:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-12 02:31:15,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057077625570776 [2023-11-12 02:31:15,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-12 02:31:15,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-12 02:31:15,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:15,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-12 02:31:15,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:15,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:15,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:15,138 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 443 transitions. [2023-11-12 02:31:15,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 192 flow [2023-11-12 02:31:15,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:31:15,141 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 87 flow [2023-11-12 02:31:15,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-11-12 02:31:15,142 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-12 02:31:15,143 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 87 flow [2023-11-12 02:31:15,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 02:31:15,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:15,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:15,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:31:15,145 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 02:31:15,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1818392647, now seen corresponding path program 1 times [2023-11-12 02:31:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694458138] [2023-11-12 02:31:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:15,379 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 02:31:15,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694458138] [2023-11-12 02:31:15,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694458138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:15,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:15,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:31:15,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602678489] [2023-11-12 02:31:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:15,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:31:15,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:31:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:31:15,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-12 02:31:15,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:15,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:15,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-12 02:31:15,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:19,968 INFO L124 PetriNetUnfolderBase]: 24453/32857 cut-off events. [2023-11-12 02:31:19,968 INFO L125 PetriNetUnfolderBase]: For 2577/2577 co-relation queries the response was YES. [2023-11-12 02:31:20,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70160 conditions, 32857 events. 24453/32857 cut-off events. For 2577/2577 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 178542 event pairs, 2761 based on Foata normal form. 650/33507 useless extension candidates. Maximal degree in co-relation 70155. Up to 17315 conditions per place. [2023-11-12 02:31:20,185 INFO L140 encePairwiseOnDemand]: 282/292 looper letters, 66 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2023-11-12 02:31:20,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 360 flow [2023-11-12 02:31:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:31:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:31:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-11-12 02:31:20,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940068493150685 [2023-11-12 02:31:20,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-11-12 02:31:20,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-11-12 02:31:20,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:20,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-11-12 02:31:20,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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 02:31:20,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 02:31:20,198 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 02:31:20,199 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 87 flow. Second operand 4 states and 577 transitions. [2023-11-12 02:31:20,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 360 flow [2023-11-12 02:31:20,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:31:20,202 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 192 flow [2023-11-12 02:31:20,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-12 02:31:20,204 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-12 02:31:20,204 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 192 flow [2023-11-12 02:31:20,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:20,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:20,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:31:20,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:31:20,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1818390493, now seen corresponding path program 1 times [2023-11-12 02:31:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474080174] [2023-11-12 02:31:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:21,272 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 02:31:21,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:21,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474080174] [2023-11-12 02:31:21,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474080174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:21,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:21,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:31:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820978092] [2023-11-12 02:31:21,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:21,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:31:21,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:31:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:31:21,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 292 [2023-11-12 02:31:21,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 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 02:31:21,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:21,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 292 [2023-11-12 02:31:21,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:25,656 INFO L124 PetriNetUnfolderBase]: 19608/27537 cut-off events. [2023-11-12 02:31:25,656 INFO L125 PetriNetUnfolderBase]: For 13963/14505 co-relation queries the response was YES. [2023-11-12 02:31:25,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68665 conditions, 27537 events. 19608/27537 cut-off events. For 13963/14505 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 163223 event pairs, 2837 based on Foata normal form. 1476/28761 useless extension candidates. Maximal degree in co-relation 68658. Up to 17553 conditions per place. [2023-11-12 02:31:25,808 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 69 selfloop transitions, 8 changer transitions 14/100 dead transitions. [2023-11-12 02:31:25,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 100 transitions, 554 flow [2023-11-12 02:31:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:31:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:31:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 899 transitions. [2023-11-12 02:31:25,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398238747553816 [2023-11-12 02:31:25,814 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 899 transitions. [2023-11-12 02:31:25,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 899 transitions. [2023-11-12 02:31:25,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:25,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 899 transitions. [2023-11-12 02:31:25,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 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 02:31:25,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 02:31:25,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 02:31:25,827 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 192 flow. Second operand 7 states and 899 transitions. [2023-11-12 02:31:25,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 100 transitions, 554 flow [2023-11-12 02:31:25,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:31:25,839 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 233 flow [2023-11-12 02:31:25,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-12 02:31:25,843 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-12 02:31:25,843 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 233 flow [2023-11-12 02:31:25,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 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 02:31:25,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:25,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:25,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:31:25,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:31:25,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1616198673, now seen corresponding path program 1 times [2023-11-12 02:31:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763531902] [2023-11-12 02:31:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:26,117 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 02:31:26,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:26,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763531902] [2023-11-12 02:31:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763531902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:26,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762736465] [2023-11-12 02:31:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:26,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:31:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:31:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:31:26,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-12 02:31:26,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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 02:31:26,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:26,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-12 02:31:26,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:28,588 INFO L124 PetriNetUnfolderBase]: 12916/18845 cut-off events. [2023-11-12 02:31:28,588 INFO L125 PetriNetUnfolderBase]: For 15466/15817 co-relation queries the response was YES. [2023-11-12 02:31:28,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50373 conditions, 18845 events. 12916/18845 cut-off events. For 15466/15817 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 117045 event pairs, 2262 based on Foata normal form. 1224/19879 useless extension candidates. Maximal degree in co-relation 50363. Up to 12890 conditions per place. [2023-11-12 02:31:28,707 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 97 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2023-11-12 02:31:28,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 744 flow [2023-11-12 02:31:28,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:31:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:31:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 708 transitions. [2023-11-12 02:31:28,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849315068493151 [2023-11-12 02:31:28,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 708 transitions. [2023-11-12 02:31:28,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 708 transitions. [2023-11-12 02:31:28,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:28,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 708 transitions. [2023-11-12 02:31:28,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:28,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 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 02:31:28,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 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 02:31:28,721 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 233 flow. Second operand 5 states and 708 transitions. [2023-11-12 02:31:28,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 744 flow [2023-11-12 02:31:29,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 724 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:31:29,052 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 299 flow [2023-11-12 02:31:29,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-12 02:31:29,055 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-11-12 02:31:29,060 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 299 flow [2023-11-12 02:31:29,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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 02:31:29,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:29,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:29,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:31:29,061 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 02:31:29,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 40304774, now seen corresponding path program 1 times [2023-11-12 02:31:29,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071357102] [2023-11-12 02:31:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:29,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:29,336 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 02:31:29,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:29,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071357102] [2023-11-12 02:31:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071357102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:29,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:29,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:31:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884209378] [2023-11-12 02:31:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:29,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:29,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 292 [2023-11-12 02:31:29,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 02:31:29,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:29,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 292 [2023-11-12 02:31:29,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:33,365 INFO L124 PetriNetUnfolderBase]: 20122/29292 cut-off events. [2023-11-12 02:31:33,365 INFO L125 PetriNetUnfolderBase]: For 37257/37545 co-relation queries the response was YES. [2023-11-12 02:31:33,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95509 conditions, 29292 events. 20122/29292 cut-off events. For 37257/37545 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 190123 event pairs, 8503 based on Foata normal form. 316/29402 useless extension candidates. Maximal degree in co-relation 95496. Up to 15264 conditions per place. [2023-11-12 02:31:33,568 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 71 selfloop transitions, 5 changer transitions 10/92 dead transitions. [2023-11-12 02:31:33,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 667 flow [2023-11-12 02:31:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:31:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-12 02:31:33,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125570776255708 [2023-11-12 02:31:33,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-12 02:31:33,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-12 02:31:33,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:33,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-12 02:31:33,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 02:31:33,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:33,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:33,578 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 299 flow. Second operand 3 states and 449 transitions. [2023-11-12 02:31:33,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 667 flow [2023-11-12 02:31:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:31:33,844 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 287 flow [2023-11-12 02:31:33,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-11-12 02:31:33,845 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-11-12 02:31:33,845 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 287 flow [2023-11-12 02:31:33,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 02:31:33,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:33,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:33,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:31:33,847 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 02:31:33,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:33,847 INFO L85 PathProgramCache]: Analyzing trace with hash -966934847, now seen corresponding path program 1 times [2023-11-12 02:31:33,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435704959] [2023-11-12 02:31:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:33,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:34,096 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 02:31:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435704959] [2023-11-12 02:31:34,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435704959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:34,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:34,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:31:34,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816830026] [2023-11-12 02:31:34,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:31:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:31:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:31:34,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-12 02:31:34,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 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 02:31:34,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:34,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-12 02:31:34,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:36,697 INFO L124 PetriNetUnfolderBase]: 11898/18084 cut-off events. [2023-11-12 02:31:36,697 INFO L125 PetriNetUnfolderBase]: For 21537/21885 co-relation queries the response was YES. [2023-11-12 02:31:36,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58133 conditions, 18084 events. 11898/18084 cut-off events. For 21537/21885 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 121803 event pairs, 1429 based on Foata normal form. 1160/19001 useless extension candidates. Maximal degree in co-relation 58119. Up to 5720 conditions per place. [2023-11-12 02:31:36,800 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 130 selfloop transitions, 18 changer transitions 3/160 dead transitions. [2023-11-12 02:31:36,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 160 transitions, 1129 flow [2023-11-12 02:31:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:31:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:31:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 992 transitions. [2023-11-12 02:31:36,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2023-11-12 02:31:36,805 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 992 transitions. [2023-11-12 02:31:36,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 992 transitions. [2023-11-12 02:31:36,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:36,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 992 transitions. [2023-11-12 02:31:36,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.71428571428572) internal successors, (992), 7 states have internal predecessors, (992), 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 02:31:36,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 02:31:36,815 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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 02:31:36,815 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 287 flow. Second operand 7 states and 992 transitions. [2023-11-12 02:31:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 160 transitions, 1129 flow [2023-11-12 02:31:36,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 1097 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-12 02:31:36,969 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 408 flow [2023-11-12 02:31:36,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-11-12 02:31:36,970 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-11-12 02:31:36,970 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 408 flow [2023-11-12 02:31:36,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 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 02:31:36,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:36,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:36,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:31:36,971 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 02:31:36,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1569830291, now seen corresponding path program 1 times [2023-11-12 02:31:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:36,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660862690] [2023-11-12 02:31:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:37,286 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 02:31:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660862690] [2023-11-12 02:31:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660862690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:37,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:37,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:31:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582017116] [2023-11-12 02:31:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:37,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:31:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:31:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:31:37,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-12 02:31:37,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 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 02:31:37,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:37,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-12 02:31:37,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:31:40,165 INFO L124 PetriNetUnfolderBase]: 10338/15673 cut-off events. [2023-11-12 02:31:40,165 INFO L125 PetriNetUnfolderBase]: For 27313/27647 co-relation queries the response was YES. [2023-11-12 02:31:40,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58296 conditions, 15673 events. 10338/15673 cut-off events. For 27313/27647 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 104718 event pairs, 1097 based on Foata normal form. 463/15896 useless extension candidates. Maximal degree in co-relation 58280. Up to 5198 conditions per place. [2023-11-12 02:31:40,239 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 144 selfloop transitions, 27 changer transitions 19/199 dead transitions. [2023-11-12 02:31:40,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 199 transitions, 1487 flow [2023-11-12 02:31:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:31:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:31:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1275 transitions. [2023-11-12 02:31:40,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851598173515982 [2023-11-12 02:31:40,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1275 transitions. [2023-11-12 02:31:40,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1275 transitions. [2023-11-12 02:31:40,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:31:40,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1275 transitions. [2023-11-12 02:31:40,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.66666666666666) internal successors, (1275), 9 states have internal predecessors, (1275), 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 02:31:40,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 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 02:31:40,257 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 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 02:31:40,257 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 408 flow. Second operand 9 states and 1275 transitions. [2023-11-12 02:31:40,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 199 transitions, 1487 flow [2023-11-12 02:31:41,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 199 transitions, 1428 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-12 02:31:41,513 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 530 flow [2023-11-12 02:31:41,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-11-12 02:31:41,514 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-12 02:31:41,514 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 530 flow [2023-11-12 02:31:41,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 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 02:31:41,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:31:41,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:41,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:31:41,515 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 02:31:41,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1376586635, now seen corresponding path program 1 times [2023-11-12 02:31:41,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:41,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401355336] [2023-11-12 02:31:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:42,798 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 02:31:42,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401355336] [2023-11-12 02:31:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401355336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:42,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:31:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778045514] [2023-11-12 02:31:42,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:42,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:31:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:31:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:31:42,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 292 [2023-11-12 02:31:42,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 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 02:31:42,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:31:42,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 292 [2023-11-12 02:31:42,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand