./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/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_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/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_6df251d2-c9f8-43ec-bf59-aa6d14454e90/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 e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:33:47,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:33:47,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:33:47,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:33:47,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:33:47,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:33:47,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:33:47,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:33:47,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:33:47,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:33:47,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:33:47,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:33:47,228 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:33:47,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:33:47,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:33:47,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:33:47,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:33:47,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:33:47,233 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:33:47,233 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:33:47,234 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:33:47,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:33:47,235 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:33:47,235 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:33:47,236 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:33:47,236 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:33:47,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:33:47,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:33:47,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:33:47,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:47,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:33:47,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:33:47,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:33:47,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:33:47,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:33:47,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:33:47,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:33:47,243 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:33:47,243 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_6df251d2-c9f8-43ec-bf59-aa6d14454e90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 [2023-11-12 02:33:47,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:33:47,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:33:47,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:33:47,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:33:47,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:33:47,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-12 02:33:50,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:51,170 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:51,171 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2023-11-12 02:33:51,193 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/data/d74cd42d8/3cd8abab537b42b5919e335623c77a26/FLAGcbed87f1b [2023-11-12 02:33:51,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/data/d74cd42d8/3cd8abab537b42b5919e335623c77a26 [2023-11-12 02:33:51,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:51,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:51,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:51,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:51,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:51,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:51" (1/1) ... [2023-11-12 02:33:51,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2328ab84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:51, skipping insertion in model container [2023-11-12 02:33:51,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:51" (1/1) ... [2023-11-12 02:33:51,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:51,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:51,959 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:52,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:52,148 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:33:52,149 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:33:52,157 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:52,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52 WrapperNode [2023-11-12 02:33:52,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:52,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:52,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:52,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:52,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,260 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-12 02:33:52,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:52,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:52,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:52,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:52,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:52,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:52,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:52,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:52,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (1/1) ... [2023-11-12 02:33:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:33:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:52,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:52,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6df251d2-c9f8-43ec-bf59-aa6d14454e90/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:33:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:33:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:33:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:33:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:33:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:33:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:33:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:33:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:33:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:33:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:33:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:33:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:33:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:33:52,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:33:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:52,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:52,433 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 02:33:52,603 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:52,605 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:53,037 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:53,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:53,257 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:33:53,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:53 BoogieIcfgContainer [2023-11-12 02:33:53,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:53,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:33:53,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:33:53,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:33:53,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:33:51" (1/3) ... [2023-11-12 02:33:53,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cf2367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:53, skipping insertion in model container [2023-11-12 02:33:53,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:52" (2/3) ... [2023-11-12 02:33:53,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cf2367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:33:53, skipping insertion in model container [2023-11-12 02:33:53,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:53" (3/3) ... [2023-11-12 02:33:53,269 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2023-11-12 02:33:53,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:33:53,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:33:53,289 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:33:53,357 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:33:53,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 154 transitions, 324 flow [2023-11-12 02:33:53,469 INFO L124 PetriNetUnfolderBase]: 3/150 cut-off events. [2023-11-12 02:33:53,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:53,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 3/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:33:53,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 154 transitions, 324 flow [2023-11-12 02:33:53,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 150 transitions, 312 flow [2023-11-12 02:33:53,495 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:33:53,514 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 150 transitions, 312 flow [2023-11-12 02:33:53,517 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 150 transitions, 312 flow [2023-11-12 02:33:53,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 150 transitions, 312 flow [2023-11-12 02:33:53,557 INFO L124 PetriNetUnfolderBase]: 3/150 cut-off events. [2023-11-12 02:33:53,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:33:53,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 3/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:33:53,562 INFO L119 LiptonReduction]: Number of co-enabled transitions 4194 [2023-11-12 02:34:00,128 INFO L134 LiptonReduction]: Checked pairs total: 11406 [2023-11-12 02:34:00,129 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-12 02:34:00,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:34:00,169 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;@19bbd4f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:34:00,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:34:00,171 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:34:00,171 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:34:00,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:34:00,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:00,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:34:00,173 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 02:34:00,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 667, now seen corresponding path program 1 times [2023-11-12 02:34:00,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:00,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990513348] [2023-11-12 02:34:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:00,368 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 02:34:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990513348] [2023-11-12 02:34:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990513348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:00,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:34:00,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516972433] [2023-11-12 02:34:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:00,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:34:00,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:34:00,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:34:00,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 304 [2023-11-12 02:34:00,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 02:34:00,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:00,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 304 [2023-11-12 02:34:00,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:03,182 INFO L124 PetriNetUnfolderBase]: 10487/14083 cut-off events. [2023-11-12 02:34:03,183 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:34:03,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28359 conditions, 14083 events. 10487/14083 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 72222 event pairs, 10487 based on Foata normal form. 0/12389 useless extension candidates. Maximal degree in co-relation 28347. Up to 14059 conditions per place. [2023-11-12 02:34:03,379 INFO L140 encePairwiseOnDemand]: 295/304 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-12 02:34:03,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 134 flow [2023-11-12 02:34:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:34:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:34:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 314 transitions. [2023-11-12 02:34:03,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164473684210527 [2023-11-12 02:34:03,402 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 314 transitions. [2023-11-12 02:34:03,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 314 transitions. [2023-11-12 02:34:03,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:03,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 314 transitions. [2023-11-12 02:34:03,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 02:34:03,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 02:34:03,423 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 02:34:03,426 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 314 transitions. [2023-11-12 02:34:03,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 134 flow [2023-11-12 02:34:03,435 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 02:34:03,438 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-12 02:34:03,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, 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 02:34:03,444 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-12 02:34:03,445 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-12 02:34:03,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 02:34:03,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:03,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:34:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:34:03,446 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 02:34:03,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash 655485, now seen corresponding path program 1 times [2023-11-12 02:34:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:03,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858521365] [2023-11-12 02:34:03,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:03,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:03,808 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 02:34:03,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858521365] [2023-11-12 02:34:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858521365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:03,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:03,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:34:03,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263337584] [2023-11-12 02:34:03,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:03,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:34:03,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:03,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:34:03,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:34:03,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 304 [2023-11-12 02:34:03,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 02:34:03,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:03,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 304 [2023-11-12 02:34:03,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:05,825 INFO L124 PetriNetUnfolderBase]: 8247/11291 cut-off events. [2023-11-12 02:34:05,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:34:05,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22568 conditions, 11291 events. 8247/11291 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 58496 event pairs, 3119 based on Foata normal form. 0/10519 useless extension candidates. Maximal degree in co-relation 22565. Up to 8863 conditions per place. [2023-11-12 02:34:05,917 INFO L140 encePairwiseOnDemand]: 301/304 looper letters, 47 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-12 02:34:05,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 224 flow [2023-11-12 02:34:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:34:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:34:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-11-12 02:34:05,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076754385964912 [2023-11-12 02:34:05,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-11-12 02:34:05,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-11-12 02:34:05,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:05,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-11-12 02:34:05,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 02:34:05,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states 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 02:34:05,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states 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 02:34:05,930 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 463 transitions. [2023-11-12 02:34:05,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 224 flow [2023-11-12 02:34:05,931 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 02:34:05,933 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-12 02:34:05,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, 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 02:34:05,934 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-12 02:34:05,934 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-12 02:34:05,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 02:34:05,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:05,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:34:05,936 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 02:34:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1192208895, now seen corresponding path program 1 times [2023-11-12 02:34:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172323672] [2023-11-12 02:34:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:06,353 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 02:34:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172323672] [2023-11-12 02:34:06,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172323672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:06,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:34:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900665665] [2023-11-12 02:34:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:06,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:34:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:34:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:34:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 304 [2023-11-12 02:34:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:06,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 304 [2023-11-12 02:34:06,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:09,966 INFO L124 PetriNetUnfolderBase]: 18413/24676 cut-off events. [2023-11-12 02:34:09,966 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2023-11-12 02:34:10,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50907 conditions, 24676 events. 18413/24676 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 126905 event pairs, 7997 based on Foata normal form. 0/23942 useless extension candidates. Maximal degree in co-relation 50903. Up to 19535 conditions per place. [2023-11-12 02:34:10,122 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 50 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-12 02:34:10,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 248 flow [2023-11-12 02:34:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:34:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:34:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-11-12 02:34:10,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48793859649122806 [2023-11-12 02:34:10,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-11-12 02:34:10,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-11-12 02:34:10,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:10,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-11-12 02:34:10,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:10,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states 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 02:34:10,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states 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 02:34:10,132 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 445 transitions. [2023-11-12 02:34:10,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 248 flow [2023-11-12 02:34:10,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:34:10,134 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 122 flow [2023-11-12 02:34:10,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, 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=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-12 02:34:10,136 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-12 02:34:10,136 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 122 flow [2023-11-12 02:34:10,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:34:10,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:10,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:10,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:34:10,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:34:10,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1696229089, now seen corresponding path program 1 times [2023-11-12 02:34:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:10,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055274235] [2023-11-12 02:34:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:10,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:10,941 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 02:34:10,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:10,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055274235] [2023-11-12 02:34:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055274235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:34:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726758226] [2023-11-12 02:34:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:34:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:34:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:34:11,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 304 [2023-11-12 02:34:11,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 02:34:11,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:11,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 304 [2023-11-12 02:34:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:14,902 INFO L124 PetriNetUnfolderBase]: 13861/19509 cut-off events. [2023-11-12 02:34:14,903 INFO L125 PetriNetUnfolderBase]: For 2858/2904 co-relation queries the response was YES. [2023-11-12 02:34:14,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43798 conditions, 19509 events. 13861/19509 cut-off events. For 2858/2904 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 110502 event pairs, 2358 based on Foata normal form. 1028/20269 useless extension candidates. Maximal degree in co-relation 43793. Up to 12979 conditions per place. [2023-11-12 02:34:15,047 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 52 selfloop transitions, 6 changer transitions 26/90 dead transitions. [2023-11-12 02:34:15,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 90 transitions, 410 flow [2023-11-12 02:34:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:34:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:34:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions. [2023-11-12 02:34:15,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42886513157894735 [2023-11-12 02:34:15,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions. [2023-11-12 02:34:15,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions. [2023-11-12 02:34:15,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:15,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions. [2023-11-12 02:34:15,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states 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 02:34:15,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 02:34:15,069 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states 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 02:34:15,070 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 122 flow. Second operand 8 states and 1043 transitions. [2023-11-12 02:34:15,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 90 transitions, 410 flow [2023-11-12 02:34:15,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 90 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:34:15,216 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 127 flow [2023-11-12 02:34:15,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-11-12 02:34:15,218 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-11-12 02:34:15,219 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 127 flow [2023-11-12 02:34:15,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 02:34:15,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:15,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:34:15,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:34:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1045385487, now seen corresponding path program 1 times [2023-11-12 02:34:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:15,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983974548] [2023-11-12 02:34:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:15,411 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 02:34:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983974548] [2023-11-12 02:34:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983974548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:15,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:15,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:34:15,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557494766] [2023-11-12 02:34:15,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:15,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:34:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:15,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:34:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:34:15,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 304 [2023-11-12 02:34:15,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 02:34:15,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:15,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 304 [2023-11-12 02:34:15,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:17,449 INFO L124 PetriNetUnfolderBase]: 8204/12039 cut-off events. [2023-11-12 02:34:17,450 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2023-11-12 02:34:17,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28540 conditions, 12039 events. 8204/12039 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 70226 event pairs, 1639 based on Foata normal form. 670/12123 useless extension candidates. Maximal degree in co-relation 28532. Up to 8499 conditions per place. [2023-11-12 02:34:17,558 INFO L140 encePairwiseOnDemand]: 297/304 looper letters, 69 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2023-11-12 02:34:17,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 85 transitions, 424 flow [2023-11-12 02:34:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:34:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:34:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2023-11-12 02:34:17,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723684210526316 [2023-11-12 02:34:17,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2023-11-12 02:34:17,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2023-11-12 02:34:17,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:17,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2023-11-12 02:34:17,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 02:34:17,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states 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 02:34:17,580 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states 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 02:34:17,581 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 127 flow. Second operand 5 states and 718 transitions. [2023-11-12 02:34:17,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 85 transitions, 424 flow [2023-11-12 02:34:17,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 394 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-12 02:34:17,734 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 186 flow [2023-11-12 02:34:17,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-12 02:34:17,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-12 02:34:17,739 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 186 flow [2023-11-12 02:34:17,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 02:34:17,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:17,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:34:17,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:34:17,740 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 02:34:17,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1618825693, now seen corresponding path program 1 times [2023-11-12 02:34:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:17,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172828014] [2023-11-12 02:34:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:17,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:18,240 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 02:34:18,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172828014] [2023-11-12 02:34:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172828014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:18,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:18,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:34:18,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050236220] [2023-11-12 02:34:18,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:18,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:34:18,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:34:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:34:18,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 304 [2023-11-12 02:34:18,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 02:34:18,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:18,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 304 [2023-11-12 02:34:18,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:20,018 INFO L124 PetriNetUnfolderBase]: 5109/7805 cut-off events. [2023-11-12 02:34:20,018 INFO L125 PetriNetUnfolderBase]: For 3985/3988 co-relation queries the response was YES. [2023-11-12 02:34:20,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22227 conditions, 7805 events. 5109/7805 cut-off events. For 3985/3988 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 45444 event pairs, 783 based on Foata normal form. 409/7916 useless extension candidates. Maximal degree in co-relation 22218. Up to 2218 conditions per place. [2023-11-12 02:34:20,103 INFO L140 encePairwiseOnDemand]: 297/304 looper letters, 93 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2023-11-12 02:34:20,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 118 transitions, 648 flow [2023-11-12 02:34:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:34:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:34:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1007 transitions. [2023-11-12 02:34:20,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2023-11-12 02:34:20,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1007 transitions. [2023-11-12 02:34:20,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1007 transitions. [2023-11-12 02:34:20,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:20,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1007 transitions. [2023-11-12 02:34:20,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.85714285714286) internal successors, (1007), 7 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 02:34:20,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states 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 02:34:20,126 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states 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 02:34:20,126 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 186 flow. Second operand 7 states and 1007 transitions. [2023-11-12 02:34:20,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 118 transitions, 648 flow [2023-11-12 02:34:20,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 118 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:34:20,190 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 315 flow [2023-11-12 02:34:20,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-12 02:34:20,191 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-12 02:34:20,192 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 315 flow [2023-11-12 02:34:20,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 02:34:20,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:20,193 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 02:34:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:34:20,194 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 02:34:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1818721703, now seen corresponding path program 1 times [2023-11-12 02:34:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:20,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167818679] [2023-11-12 02:34:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:21,114 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 02:34:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167818679] [2023-11-12 02:34:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167818679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:34:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631266782] [2023-11-12 02:34:21,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:34:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:34:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:34:21,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 304 [2023-11-12 02:34:21,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:34:21,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:21,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 304 [2023-11-12 02:34:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:23,525 INFO L124 PetriNetUnfolderBase]: 9135/14490 cut-off events. [2023-11-12 02:34:23,525 INFO L125 PetriNetUnfolderBase]: For 27111/27111 co-relation queries the response was YES. [2023-11-12 02:34:23,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49692 conditions, 14490 events. 9135/14490 cut-off events. For 27111/27111 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 98360 event pairs, 2947 based on Foata normal form. 0/14197 useless extension candidates. Maximal degree in co-relation 49680. Up to 7424 conditions per place. [2023-11-12 02:34:23,617 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 156 selfloop transitions, 18 changer transitions 11/191 dead transitions. [2023-11-12 02:34:23,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 191 transitions, 1602 flow [2023-11-12 02:34:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:34:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:34:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 898 transitions. [2023-11-12 02:34:23,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923245614035088 [2023-11-12 02:34:23,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 898 transitions. [2023-11-12 02:34:23,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 898 transitions. [2023-11-12 02:34:23,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:23,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 898 transitions. [2023-11-12 02:34:23,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 0 states have call successors, (0), 0 states 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 02:34:23,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 02:34:23,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 02:34:23,633 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 315 flow. Second operand 6 states and 898 transitions. [2023-11-12 02:34:23,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 191 transitions, 1602 flow [2023-11-12 02:34:24,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 191 transitions, 1382 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-11-12 02:34:24,337 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 427 flow [2023-11-12 02:34:24,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-11-12 02:34:24,339 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-11-12 02:34:24,339 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 427 flow [2023-11-12 02:34:24,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 02:34:24,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:24,340 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 02:34:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:34:24,340 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 02:34:24,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -964409095, now seen corresponding path program 2 times [2023-11-12 02:34:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:24,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523298269] [2023-11-12 02:34:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:24,671 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 02:34:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523298269] [2023-11-12 02:34:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523298269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:24,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:34:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719597875] [2023-11-12 02:34:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:24,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:34:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:34:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:34:24,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 304 [2023-11-12 02:34:24,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 131.16666666666666) internal successors, (787), 6 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 02:34:24,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:24,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 304 [2023-11-12 02:34:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:26,968 INFO L124 PetriNetUnfolderBase]: 7737/11913 cut-off events. [2023-11-12 02:34:26,968 INFO L125 PetriNetUnfolderBase]: For 19716/19733 co-relation queries the response was YES. [2023-11-12 02:34:27,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42045 conditions, 11913 events. 7737/11913 cut-off events. For 19716/19733 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 77917 event pairs, 635 based on Foata normal form. 294/11911 useless extension candidates. Maximal degree in co-relation 42030. Up to 3024 conditions per place. [2023-11-12 02:34:27,099 INFO L140 encePairwiseOnDemand]: 297/304 looper letters, 201 selfloop transitions, 28 changer transitions 26/261 dead transitions. [2023-11-12 02:34:27,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 261 transitions, 1823 flow [2023-11-12 02:34:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:34:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:34:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1294 transitions. [2023-11-12 02:34:27,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472953216374269 [2023-11-12 02:34:27,107 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1294 transitions. [2023-11-12 02:34:27,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1294 transitions. [2023-11-12 02:34:27,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:27,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1294 transitions. [2023-11-12 02:34:27,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.77777777777777) internal successors, (1294), 9 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states 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 02:34:27,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states 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 02:34:27,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states 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 02:34:27,123 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 427 flow. Second operand 9 states and 1294 transitions. [2023-11-12 02:34:27,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 261 transitions, 1823 flow [2023-11-12 02:34:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 261 transitions, 1821 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:34:28,714 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 605 flow [2023-11-12 02:34:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-11-12 02:34:28,715 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-11-12 02:34:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 605 flow [2023-11-12 02:34:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.16666666666666) internal successors, (787), 6 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 02:34:28,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:28,716 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 02:34:28,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:34:28,717 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 02:34:28,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash -890499903, now seen corresponding path program 1 times [2023-11-12 02:34:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921490811] [2023-11-12 02:34:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:29,749 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 02:34:29,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921490811] [2023-11-12 02:34:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921490811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:29,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:34:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306398193] [2023-11-12 02:34:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:29,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:34:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:34:29,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:34:29,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 304 [2023-11-12 02:34:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 605 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 02:34:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:29,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 304 [2023-11-12 02:34:29,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:34:32,022 INFO L124 PetriNetUnfolderBase]: 8835/13949 cut-off events. [2023-11-12 02:34:32,022 INFO L125 PetriNetUnfolderBase]: For 38434/38604 co-relation queries the response was YES. [2023-11-12 02:34:32,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55741 conditions, 13949 events. 8835/13949 cut-off events. For 38434/38604 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 94405 event pairs, 1361 based on Foata normal form. 109/13857 useless extension candidates. Maximal degree in co-relation 55722. Up to 9093 conditions per place. [2023-11-12 02:34:32,138 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 204 selfloop transitions, 19 changer transitions 13/242 dead transitions. [2023-11-12 02:34:32,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 242 transitions, 2278 flow [2023-11-12 02:34:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:34:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:34:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1032 transitions. [2023-11-12 02:34:32,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2023-11-12 02:34:32,144 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1032 transitions. [2023-11-12 02:34:32,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1032 transitions. [2023-11-12 02:34:32,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:34:32,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1032 transitions. [2023-11-12 02:34:32,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.42857142857142) internal successors, (1032), 7 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 02:34:32,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states 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 02:34:32,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states 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 02:34:32,156 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 605 flow. Second operand 7 states and 1032 transitions. [2023-11-12 02:34:32,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 242 transitions, 2278 flow [2023-11-12 02:34:34,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 242 transitions, 1906 flow, removed 122 selfloop flow, removed 5 redundant places. [2023-11-12 02:34:34,500 INFO L231 Difference]: Finished difference. Result has 80 places, 99 transitions, 718 flow [2023-11-12 02:34:34,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=80, PETRI_TRANSITIONS=99} [2023-11-12 02:34:34,501 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2023-11-12 02:34:34,502 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 99 transitions, 718 flow [2023-11-12 02:34:34,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states 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 02:34:34,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:34:34,503 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 02:34:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:34:34,503 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 02:34:34,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1791559477, now seen corresponding path program 2 times [2023-11-12 02:34:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919862302] [2023-11-12 02:34:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:35,395 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 02:34:35,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:35,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919862302] [2023-11-12 02:34:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919862302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:35,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:34:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943665006] [2023-11-12 02:34:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:35,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:34:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:34:35,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:34:35,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 304 [2023-11-12 02:34:35,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 99 transitions, 718 flow. Second operand has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states 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 02:34:35,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:34:35,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 304 [2023-11-12 02:34:35,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand